#gaia — Public Fediverse posts

@Huntn00 @cwicseolfor I don't believe any such plan would ever be agreed. We aren't sensible creatures, like the ten-spined sticklebacks, that all become #gay when their #food #supply is too low to #support their #population, & only become #straight again when it can feed them all, so it will be #Gaia that will impose her #solution on us. We WON'T like it!

1️⃣ 5️⃣ #HoyEs151515 y me gustaría aprovechar para recomendaros que os suscribáis a la edición en papel de la @revista 15/15\15. No hay punto de comparación entre leer (y prestar o regalar) la edición artesanal en papel y leer en la pantalla o reenviar un link. Pero no me creáis a mí: leed lo que dice la gente al comienzo de la página de suscripción: https://www.15-15-15.org/webzine/suscribete-es/

#Decrecimiento #Colapso #Gaia #Comunalismo #CaosClimatico #Extincion #Ecologia #Comunalismo #Poscapitalismo

Weekly Update from the Open Journal of Astrophysics – 25/04/2026

So here we are again, on a Saturday morning, with another update of activity at the Open Journal of Astrophysics. Since the last update we have published a further five papers, bringing the number in Volume 9 (2026) to 87 and the total so far published by OJAp up to 535.

I will continue to include the posts made on our Mastodon account (on Fediscience) to encourage you to visit it. Mastodon is a really excellent service, and a more than adequate replacement for X/Twitter (which nobody should be using); these announcements also show the DOI for each paper.

The first paper to report this week is “Bayesian Cosmic Void Finding with Graph Flows” by Leander Thiele (U. Tokyo, Japan). This was published on Monday 20th April in the folder Cosmology and Nongalactic Astrophysics. The paper presents a method using a deep graph neural network to identify cosmic voids in sparse galaxy surveys, improving upon traditional deterministic algorithms by considering the problem’s probabilistic nature. The overlay is here:

You can find the officially accepted version on arXiv here and the announcement on Fediverse here:

https://fediscience.org/@OJ_Astro/116435864086025246

The second paper for this week, published on Wednesday 22nd April in the folder Astrophysics of Galaxies, is “Sifting for a Stream: The Morphology of the 300S Stellar Stream” by Benjamin Cohen (U. Chicago, USA) and 20 others distributed around the world. This study analyzes the morphology of the $300S$ stellar stream, revealing three density peaks, a possible gap, and a kink, suggesting significant influence from the Large Magellanic Cloud on its structure.

The overlay for this one is here:

The official version of the paper can be found on arXiv here and the Fediverse announcement here:

https://fediscience.org/@OJ_Astro/116447005556180402

Next one up, the third paper of the week, is “IRMaGiC: Extending Luminous Red Galaxy Selection into the Infrared with Joint Rubin Observatory’s Large Survey of Space Time and Roman’s High Latitude Imaging Survey” by Zhiyuan Guo & Chris. W. Walter (Duke U., USA) and Eli S. Rykoff (Stanford U., USA) on behalf of the LSST Dark Energy Science Collaboration. This was published on Wednesday April 22nd in the folder Cosmology and Nongalactic Astrophysics. The paper introduces IRMaGiC, an algorithm that improves the selection and redshift estimation of Luminous Red Galaxies (LRGs) by incorporating infrared data, enhancing future cosmological surveys.

The overlay for this one is here:

The final, accepted version can be found on arXiv here and the Mastodon announcement is here:

https://fediscience.org/@OJ_Astro/116447067337351283

The fourth paper this week, published on Thursday April 23rd, is “The Diagnostic Temperature Discrepancy as Evidence for Non-Maxwellian Coronal Electrons” by Victor Edmonds (Final Stop Consulting, USA). This paper, in the folder Solar and Stellar Astrophysics, presents two methods of measuring electron temperature in the quiet solar corona yielding different results, suggesting non-Maxwellian electron velocity distributions may be responsible for the discrepancy.

The overlay is here:

The finally accepted version of this paper can be found here and the Mastodon announcement follows:

https://fediscience.org/@OJ_Astro/116452775389963618

The fifth and final paper for this week was published on Friday 24th April in the folder Astrophysics of Galaxies. The title is “Galaxy evolution in the post-merger regime. IV – The long-term effect of mergers on galactic stellar mass growth and distribution” by Sara L. Ellison (U. Victoria, Canada) and Leonardo Ferreira (Universidade Federal do Rio Grande, Brazil). This study uses a large sample of post-merger galaxies to demonstrate that galaxy mergers trigger significant and extended stellar mass growth in their central regions, independent of stellar population modelling.

The overlay is here:

You can find the authorized version of this paper on arXiv here and the Fediverse announcement is here:

https://fediscience.org/@OJ_Astro/116458316824739014

The overlay for this one is here:

You can find the officially-accepted version on arXiv here and the Mastodon announcement here:

https://fediscience.org/@OJ_Astro/116458316824739014

And that concludes this week’s update. I’ll do another one at the end of next week.

P.S. Thanks to the efforts of a member of our Editorial Board, the Open Journal of Astrophysics now has a Wikipedia page.

“Tomorrow morning. The storm will be well and truly a Witch by then. This is the first time I’m relying on Gaia’s control of the environment. I’m amazed at how granular I can be. But you should go see Mayor Chow and warn her, in general terms.”

“Tell me about this ‘unfortunate accident’.”

#MachineIntelligence #Robots #Gaia #SelfConsciousness #SerialFiction

Since the Witch will make lake freighter traffic inconvenient for a few days, the sea cans will start rolling out via road delivery. The shipping season will close at the end of the year and re-open start of April. So we’ll ship what we can by sea freighter, then switch just to road for the winter, picking up sea freight again in spring.”

#Robots #Gaia #SelfConsciousness #SerialFiction

I will provide full documentation to all concerned authorities. During the confusion I will make another announcement. Then we’ll wait for things to settle before we deploy the Ultors and my avatars.”

“What about blast and radiation damage?”

#Robots #Gaia #SelfConsciousness #SerialFiction

“There’s a Witch of November brewing, which I am encouraging and focusing. When the freighter gets near the centre of the arc defined by Kincardine and Tobermory, verifiably on the Canadian side of the border, the ship will have an unfortunate accident. It will sink and at some point the pressure trigger will detonate the device. It’ll be a major international incident.

#MachineIntelligence #Robots #Gaia #SelfConsciousness #SerialFiction

We took the short walk to the mine head, then the elevator and golf cart downstairs to Mica’s home. We ignored the Ultors posted at various checkpoint locations, and they ignored us. They were all aspects of Mica after all. Once securely in Mica’s cab, I continued the conversation.

“Details?”

#MachineIntelligence #Robots #Gaia #SelfConsciousness #SerialFiction

Part II

CHAPTER 10

The Gale

“The storm has started,” Mica told me one morning over my breakfast. “I’m tracking an interesting freighter on the lake. It just cleared the Straits of Mackinac, originating in Chicago.”

“Cargo?” I asked.

“Something quite small and torpedo shaped, with a suspicious radiation signature.”

“A nuclear fusion bomb?”

#MachineIntelligence #Robots #Gaia #SelfConsciousness #SerialFiction

@Larchmutz
Comme je trie presque tout et tout le temps, ici dans mon bled rural et FaF on me dit souvent que cela sert à rien et m^me je vois de grands étonnement sur les visages.
Eh bien ca crée des emplois cette réponse étonne souvent et pourtant..
Sinon je le fais pour moi pour #pachamama et/ou #Gaïa
C'est une manière d'être en conscience avec moa

And at the end of November, the storm hit.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

The world seemed to have forgotten about MIke’s announcements. We never made the news any more, which suited us all fine. Even the usual fake news and comedy programs stopped making fun of MIke within a few days as new scandals were uncovered. We all knew it was the calm before the storm.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

Thousands of conventional computers were installed in racks in an adjacent gallery, with their own data lines to the Internet backbone. The first large Petisol of the 10 megawatt class was installed in an adjacent gallery for secure local power. Barbarobo got their 500 kilowatt unit to power their aeroplane.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

Mica’s private gallery was closed off and the blast doors installed. Apart from her connections to power and data lines, she was physically as secure as we could manage. Marc and Sandra installed and commissioned several dozen additional quantum computers in other parts of her gallery.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

Our galleries were filling up with thousands of Ultors and a few hundred avatars. We had thousands of spare Petisols, each good for 5kW steady electrical output, packed and ready for shipment. Larger variants were starting limited production. On the surface we were accumulating empty sea cans, ready to ship Ultors around the world.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

We started installing the Petisol reactors in the robots as each came off the line, with enough left over to retrofit the Ultors coming in from Barbarobo. Floyd and his crew even had sent us a few avatars, so MIke was able to have a physical body presence in all critical areas. The avatars were becoming a common sight around Goderich, acting as a very effective PR interface with the public.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

The Petisol manufacturing line took a bit longer because we had to order injection casting machines and have the custom moulds made. Once the manufacturing machines were working properly, the Petisol production line soon outpaced all the robot lines put together.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

Over the next month we got the Ultor and avatar lines in full production. Michel’s crew returned in the specified two weeks and commissioned the second GF power plant. MIke and Michel had a proof of concept of the Petisol working within a week, and a production model a week after that.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

Back at the aeroplane Veronika released the tie downs and did the preflight. After hugs all around, they climbed into their magic carpet and headed home.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

I hadn’t been in the barn building since we initially inspected the property, so was seeing it from a new perspective. We all agreed that with the tankage already in place, it would be adequate to our purposes.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

“Yes in the large building next to the secondary elevator shaft. Stainless steel, empty and clean. They just held brine from the water jet cutters until it could go to the evaporation pond. I’ll have them flushed out, ready for the plastic liquids. If we’re done here for now, let’s go take a look,” Percy said.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

“Excellent!” I said. “Something else came up yesterday. We’ll need storage tanks for liquid raw materials. Apparently the feed stock for the robots’ plastic body comes as two different liquid plastics. I vaguely remember seeing some tankage in one of the surface buildings. Am I remembering correctly?”

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

“Understood. Now let’s move on.” Percy led us to the third gallery. “This gallery is closest to the secondary freight elevators, once we punch a hole right there,” he said gesturing at a rock salt wall. “It’ll make a good goods staging area.”

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

The Ultor’s head drooped, then looked again straight at Percy. “As Carter knows, my Gaia component has no direct experience dealing with humans. Thank you for the lesson in sensitivity.”

“Wow Percy!” I said. “You just received an apology from a goddess. Don’t let it go to your head!” I grinned to make sure he knew I was trying to make light of a heavy situation.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

“As you see,” Percy said gesturing around an unused gallery, “The excavation equipment is here and ready to go first thing Monday. Floyd sent me the specs on the production equipment. We can do a double, maybe triple version of what they have in Trollbridge. But instead of a separate gallery for the avatars, why don’t we just put another line in here? This is the largest open gallery, we have the room.”

#PositiveSF #CanadianSF #HoE #Transmigration #Robots #Gaia #SelfConsciousness

“So you see Carter,” Veronika said, “this level of attention is nothing, just flattering. I’ll show you pictures when you visit us again.”

“I loved her figure then, I love it now,” Barb said. “But now her back doesn’t hurt all the time and we’re more evenly matched!”

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

Michel got up, saying “MIke, let you and me move to my room upstairs. We are not needed here and have other work.” He didn’t wait for MIke to unplug and follow.

“And we meats should get ready to go partay!” I said, also getting up. “Let’s meet here at 16:30.”

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

“Let’s look at that tomorrow. I think that’s already covered, but Percy will know.” I remembered seeing large tanks in one of the surface buildings, but didn’t know what their purpose was.

#PositiveSF #CanadianSF #HoE #Transmigration #MachineIntelligence #Robots #Gaia #SelfConsciousness

Weekly Update from the Open Journal of Astrophysics – 18/10/2025

It’s time once again for the usual Saturday update of the week’s new papers at the Open Journal of Astrophysics. Since the last update we have published four  more papers, which brings the number in Volume 8 (2025) up to 156, and the total so far published by OJAp up to 391.

I’d like to encourage people to follow our feed on the Fediverse via Mastodon (where I announce papers as they are published, including the all-important DOI) so this week I’ll include links to each announcement there.

The first paper to report is “Shot noise in clustering power spectra” by Nicolas Tessore (University College London, UK) and Alex Hall (University of Edinburgh, UK). This was published in the folder Cosmology and NonGalactic Astrophysics on Tuesday October 14th 2025. This presents a discussion of the effects of ‘shot noise’, an additive contribution due to degenerate pairs of points, in angular galaxy clustering power spectra. Here is a screen grab of the overlay:

You can find the officially accepted version of the paper here. The Mastodon announcement is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "Shot noise in clustering power spectra" by Nicolas Tessore (University College London, UK) and Alex Hall (University of Edinburgh, UK)

https://doi.org/10.33232/001c.145919

Next one up is “The Giant Arc – Filament or Figment?” by Till Sawala and Meri Teeriaho (University of Helsinki, Finland). This paper discusses the abundance of large arc-like structures formed in the standard cosmological model, with reference to the “Giant Arc” identified in MgII absorption systems. It was published on Wednesday October 15th in the folder Cosmology and NonGalactic Astrophysics. The overlay is here:

The officially accepted version of this paper can be found on the arXiv here and the Mastodon announcement is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "The Giant Arc – Filament or Figment?" by Till Sawala and Meri Teeriaho (University of Helsinki, Finland)

https://doi.org/10.33232/001c.145931

The third paper this week,  published on Monday 6th October, is “Detecting wide binaries using machine learning algorithms” by Amoy Ashesh, Harsimran Kaur and Sandeep Aashish (Indian Institute of Technology, Patna, India). This was published on Friday 17th October (yesterday) in the folder Astrophysics of Galaxies. It presents a method for detecting wide binary systems in Gaia data using machine learning algorithms.

The overlay is here:

You can find the officially accepted version of this paper on arXiv here. The announcement on Mastodon is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "Detecting wide binaries using machine learning algorithms" by Amoy Ashesh, Harsimran Kaur and Sandeep Aashish (Indian Institute of Technology, Patna, India)

https://doi.org/10.33232/001c.146027

The last one this week is “Learned harmonic mean estimation of the Bayesian evidence with normalizing flows” by Alicja Polanska & Matthew A. Price (University College London, UK), Davide Piras (Université de Genève, CH), Alessio Spurio Mancini (Royal Holloway, London, UK) and Jason D. McEwen (University College London). This one was also published on Friday 17th October, but in the folder Instrumentation and Methods for Astrophysics; it presents a new method for estimating Bayesian evidence for use in model comparison, illustrated with a cosmological example.

The corresponding overlay is here:

You can find the officially accepted version on arXiv here. The Mastodon announcement is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "Learned harmonic mean estimation of the Bayesian evidence with normalizing flows" by Alicja Polanska & Matthew A. Price (University College London, UK), Davide Piras (Université de Genève, CH), Alessio Spurio Mancini (Royal Holloway, London, UK) and Jason D. McEwen (University College London)

https://doi.org/10.33232/001c.146026

That concludes the papers for this week. With two weeks to go I think we might reach the 400 total by the end of October.

#arXiv240505969v3 #arXiv250511072v2 #arXiv250619942v3 #arXiv250703749v2 #BayesInference #BayesianModelComparison #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #GAIA #GaiaDR3 #galaxyClustering #GiantArc #InstrumentationAndMethodsForAstrophysics #largeScaleStructureOfTheUniverse #Mastodon #MgIIAbsorptionSystems #normalizingFlows #OpenJournalOfAstrophysics #ShotNoise #WideBinaries

Weekly Update from the Open Journal of Astrophysics – 18/10/2025

It’s time once again for the usual Saturday update of the week’s new papers at the Open Journal of Astrophysics. Since the last update we have published six  more papers, which brings the number in Volume 8 (2025) up to 156, and the total so far published by OJAp up to 391.

I’d like to encourage people to follow our feed on the Fediverse via Mastodon (where I announce papers as they are published, including the all-important DOI) so this week I’ll include links to each announcement there.

The first paper to report is “Shot noise in clustering power spectra” by Nicolas Tessore (University College London, UK) and Alex Hall (University of Edinburgh, UK). This was published in the folder Cosmology and NonGalactic Astrophysics on Tuesday October 14th 2025. This presents a discussion of the effects of ‘shot noise’, an additive contribution due to degenerate pairs of points, in angular galaxy clustering power spectra. Here is a screen grab of the overlay:

You can find the officially accepted version of the paper here. The Mastodon announcement is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "Shot noise in clustering power spectra" by Nicolas Tessore (University College London, UK) and Alex Hall (University of Edinburgh, UK)

https://doi.org/10.33232/001c.145919

Next one up is “The Giant Arc – Filament or Figment?” by Till Sawala and Meri Teeriaho (University of Helsinki, Finland). This paper discusses the abundance of large arc-like structures formed in the standard cosmological model, with reference to the “Giant Arc” identified in MgII absorption systems. It was published on Wednesday October 15th in the folder Cosmology and NonGalactic Astrophysics. The overlay is here:

The officially accepted version of this paper can be found on the arXiv here and the Mastodon announcement is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "The Giant Arc – Filament or Figment?" by Till Sawala and Meri Teeriaho (University of Helsinki, Finland)

https://doi.org/10.33232/001c.145931

The third paper this week,  published on Monday 6th October, is “Detecting wide binaries using machine learning algorithms” by Amoy Ashesh, Harsimran Kaur and Sandeep Aashish (Indian Institute of Technology, Patna, India). This was published on Friday 17th October (yesterday) in the folder Astrophysics of Galaxies. It presents a method for detecting wide binary systems in Gaia data using machine learning algorithms.

The overlay is here:

You can find the officially accepted version of this paper on arXiv here. The announcement on Mastodon is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "Detecting wide binaries using machine learning algorithms" by Amoy Ashesh, Harsimran Kaur and Sandeep Aashish (Indian Institute of Technology, Patna, India)

https://doi.org/10.33232/001c.146027

The last one this week is “Learned harmonic mean estimation of the Bayesian evidence with normalizing flows” by Alicja Polanska & Matthew A. Price (University College London, UK), Davide Piras (Université de Genève, CH), Alessio Spurio Mancini (Royal Holloway, London, UK) and Jason D. McEwen (University College London). This one was also published on Friday 17th October, but in the folder Instrumentation and Methods for Astrophysics; it presents a new method for estimating Bayesian evidence for use in model comparison, illustrated with a cosmological example.

The corresponding overlay is here:

You can find the officially accepted version on arXiv here. The Mastodon announcement is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "Learned harmonic mean estimation of the Bayesian evidence with normalizing flows" by Alicja Polanska & Matthew A. Price (University College London, UK), Davide Piras (Université de Genève, CH), Alessio Spurio Mancini (Royal Holloway, London, UK) and Jason D. McEwen (University College London)

https://doi.org/10.33232/001c.146026

That concludes the papers for this week. With two weeks to go I think we might reach the 400 total by the end of October.

#arXiv240505969v3 #arXiv250511072v2 #arXiv250619942v3 #arXiv250703749v2 #BayesInference #BayesianModelComparison #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #GAIA #GaiaDR3 #galaxyClustering #GiantArc #InstrumentationAndMethodsForAstrophysics #largeScaleStructureOfTheUniverse #Mastodon #MgIIAbsorptionSystems #normalizingFlows #OpenJournalOfAstrophysics #ShotNoise #WideBinaries

Weekly Update from the Open Journal of Astrophysics – 18/10/2025

It’s time once again for the usual Saturday update of the week’s new papers at the Open Journal of Astrophysics. Since the last update we have published six  more papers, which brings the number in Volume 8 (2025) up to 156, and the total so far published by OJAp up to 391.

I’d like to encourage people to follow our feed on the Fediverse via Mastodon (where I announce papers as they are published, including the all-important DOI) so this week I’ll include links to each announcement there.

The first paper to report is “Shot noise in clustering power spectra” by Nicolas Tessore (University College London, UK) and Alex Hall (University of Edinburgh, UK). This was published in the folder Cosmology and NonGalactic Astrophysics on Tuesday October 14th 2025. This presents a discussion of the effects of ‘shot noise’, an additive contribution due to degenerate pairs of points, in angular galaxy clustering power spectra. Here is a screen grab of the overlay:

You can find the officially accepted version of the paper here. The Mastodon announcement is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "Shot noise in clustering power spectra" by Nicolas Tessore (University College London, UK) and Alex Hall (University of Edinburgh, UK)

https://doi.org/10.33232/001c.145919

Next one up is “The Giant Arc – Filament or Figment?” by Till Sawala and Meri Teeriaho (University of Helsinki, Finland). This paper discusses the abundance of large arc-like structures formed in the standard cosmological model, with reference to the “Giant Arc” identified in MgII absorption systems. It was published on Wednesday October 15th in the folder Cosmology and NonGalactic Astrophysics. The overlay is here:

The officially accepted version of this paper can be found on the arXiv here and the Mastodon announcement is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "The Giant Arc – Filament or Figment?" by Till Sawala and Meri Teeriaho (University of Helsinki, Finland)

https://doi.org/10.33232/001c.145931

The third paper this week,  published on Monday 6th October, is “Detecting wide binaries using machine learning algorithms” by Amoy Ashesh, Harsimran Kaur and Sandeep Aashish (Indian Institute of Technology, Patna, India). This was published on Friday 17th October (yesterday) in the folder Astrophysics of Galaxies. It presents a method for detecting wide binary systems in Gaia data using machine learning algorithms.

The overlay is here:

You can find the officially accepted version of this paper on arXiv here. The announcement on Mastodon is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "Detecting wide binaries using machine learning algorithms" by Amoy Ashesh, Harsimran Kaur and Sandeep Aashish (Indian Institute of Technology, Patna, India)

https://doi.org/10.33232/001c.146027

The last one this week is “Learned harmonic mean estimation of the Bayesian evidence with normalizing flows” by Alicja Polanska & Matthew A. Price (University College London, UK), Davide Piras (Université de Genève, CH), Alessio Spurio Mancini (Royal Holloway, London, UK) and Jason D. McEwen (University College London). This one was also published on Friday 17th October, but in the folder Instrumentation and Methods for Astrophysics; it presents a new method for estimating Bayesian evidence for use in model comparison, illustrated with a cosmological example.

The corresponding overlay is here:

You can find the officially accepted version on arXiv here. The Mastodon announcement is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "Learned harmonic mean estimation of the Bayesian evidence with normalizing flows" by Alicja Polanska & Matthew A. Price (University College London, UK), Davide Piras (Université de Genève, CH), Alessio Spurio Mancini (Royal Holloway, London, UK) and Jason D. McEwen (University College London)

https://doi.org/10.33232/001c.146026

That concludes the papers for this week. With two weeks to go I think we might reach the 400 total by the end of October.

#arXiv240505969v3 #arXiv250511072v2 #arXiv250619942v3 #arXiv250703749v2 #BayesInference #BayesianModelComparison #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #GAIA #GaiaDR3 #galaxyClustering #GiantArc #InstrumentationAndMethodsForAstrophysics #largeScaleStructureOfTheUniverse #Mastodon #MgIIAbsorptionSystems #normalizingFlows #OpenJournalOfAstrophysics #ShotNoise #WideBinaries

Weekly Update from the Open Journal of Astrophysics – 18/10/2025

It’s time once again for the usual Saturday update of the week’s new papers at the Open Journal of Astrophysics. Since the last update we have published four  more papers, which brings the number in Volume 8 (2025) up to 156, and the total so far published by OJAp up to 391.

I’d like to encourage people to follow our feed on the Fediverse via Mastodon (where I announce papers as they are published, including the all-important DOI) so this week I’ll include links to each announcement there.

The first paper to report is “Shot noise in clustering power spectra” by Nicolas Tessore (University College London, UK) and Alex Hall (University of Edinburgh, UK). This was published in the folder Cosmology and NonGalactic Astrophysics on Tuesday October 14th 2025. This presents a discussion of the effects of ‘shot noise’, an additive contribution due to degenerate pairs of points, in angular galaxy clustering power spectra. Here is a screen grab of the overlay:

You can find the officially accepted version of the paper here. The Mastodon announcement is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "Shot noise in clustering power spectra" by Nicolas Tessore (University College London, UK) and Alex Hall (University of Edinburgh, UK)

https://doi.org/10.33232/001c.145919

Next one up is “The Giant Arc – Filament or Figment?” by Till Sawala and Meri Teeriaho (University of Helsinki, Finland). This paper discusses the abundance of large arc-like structures formed in the standard cosmological model, with reference to the “Giant Arc” identified in MgII absorption systems. It was published on Wednesday October 15th in the folder Cosmology and NonGalactic Astrophysics. The overlay is here:

The officially accepted version of this paper can be found on the arXiv here and the Mastodon announcement is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "The Giant Arc – Filament or Figment?" by Till Sawala and Meri Teeriaho (University of Helsinki, Finland)

https://doi.org/10.33232/001c.145931

The third paper this week,  published on Monday 6th October, is “Detecting wide binaries using machine learning algorithms” by Amoy Ashesh, Harsimran Kaur and Sandeep Aashish (Indian Institute of Technology, Patna, India). This was published on Friday 17th October (yesterday) in the folder Astrophysics of Galaxies. It presents a method for detecting wide binary systems in Gaia data using machine learning algorithms.

The overlay is here:

You can find the officially accepted version of this paper on arXiv here. The announcement on Mastodon is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "Detecting wide binaries using machine learning algorithms" by Amoy Ashesh, Harsimran Kaur and Sandeep Aashish (Indian Institute of Technology, Patna, India)

https://doi.org/10.33232/001c.146027

The last one this week is “Learned harmonic mean estimation of the Bayesian evidence with normalizing flows” by Alicja Polanska & Matthew A. Price (University College London, UK), Davide Piras (Université de Genève, CH), Alessio Spurio Mancini (Royal Holloway, London, UK) and Jason D. McEwen (University College London). This one was also published on Friday 17th October, but in the folder Instrumentation and Methods for Astrophysics; it presents a new method for estimating Bayesian evidence for use in model comparison, illustrated with a cosmological example.

The corresponding overlay is here:

You can find the officially accepted version on arXiv here. The Mastodon announcement is here:

Open Journal of Astrophysics

@[email protected]

New Publication at the Open Journal of Astrophysics: "Learned harmonic mean estimation of the Bayesian evidence with normalizing flows" by Alicja Polanska & Matthew A. Price (University College London, UK), Davide Piras (Université de Genève, CH), Alessio Spurio Mancini (Royal Holloway, London, UK) and Jason D. McEwen (University College London)

https://doi.org/10.33232/001c.146026

That concludes the papers for this week. With two weeks to go I think we might reach the 400 total by the end of October.

#arXiv240505969v3 #arXiv250511072v2 #arXiv250619942v3 #arXiv250703749v2 #BayesInference #BayesianModelComparison #CosmologyAndNonGalacticAstrophysics #DiamondOpenAccess #DiamondOpenAccessPublishing #GAIA #GaiaDR3 #galaxyClustering #GiantArc #InstrumentationAndMethodsForAstrophysics #largeScaleStructureOfTheUniverse #Mastodon #MgIIAbsorptionSystems #normalizingFlows #OpenJournalOfAstrophysics #ShotNoise #WideBinaries

"Matar a Dios es imposible, pero..."
Julio García Camarero, de nuevo en 15/15\15 con sus reflexiones decrecentistas:
[ES] https://www.15-15-15.org/webzine/2025/05/04/no-es-posible-matar-a-dios-pero-si-lo-es-a-la-pachamama/
[PT] https://www.15-15-15.org/webzine/2025/05/04/e-impossivel-assassinar-deus-mas-e-possivel-assassinar-a-pachamama/
[IT] https://www.15-15-15.org/webzine/2025/05/04/e-impossibile-uccidere-dio-ma-e-possibile-uccidere-pacha-mama/
[EU] https://www.15-15-15.org/webzine/2025/05/04/ezinezkoa-da-jainkoa-hiltzea-baina-pachamama-erailtzea-posible-da/
#decrecimiento #decrescimento #desazkundea #decrescita #Gaia #Pachamama

[Two #seminars this Thursday] ... Two methods for studying objects in our near and far #Universe: one based on observational data from the #Gaia satellite, the other using deep neural networks. What eclecticism! 🤩

Pier-Emmanuel Tremblay of the University of Warwick will address #cosmochronology in our neighborhood of stars and planets at IRAP: https://www.irap.omp.eu/event/cosmo-chronologie-dans-notre-voisinage-detoiles-et-de-planetes/

Didier Barret, DR CNRS at IRAP, will present a method for fitting high-resolution X-ray spectra of the NewAthena X-IFU type using deep neural networks: https://www.the-athena-x-ray-observatory.eu/en/blog/newathena-x-ray-advances-series-webinar-didier-barret

@largess @jackofalltrades

Tom's conclusions reminded me of this comic that describes our situation perfectly, especially how we completely miss the point.

http://humoncomics.com/mother-gaia
#ClimateChange #ClimateCrisis
#FuckAroundAndFindOut
#Collapse #SelfCenteredness #Nature #MotherNature #Gaia
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