#darkenergy — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #darkenergy, aggregated by home.social.
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Why 3,000 Supernovae Are Breaking Our Models of Dark Energy - YouTube
https://www.youtube.com/watch?v=CPTROhoiQAE -
Is #DarkEnergy just #Leftover #Momentum from the #BigBang? : Medium
#NASA Announces New #Spacecraft #Technology #Demonstration #Mission at #Moon : NASA
#Asteroid strike caused global #Firestorm that #Incinerated the #Dinosaurs : New Sci
Latest #KnowledgeLinks
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Is #DarkEnergy just #Leftover #Momentum from the #BigBang? : Medium
#NASA Announces New #Spacecraft #Technology #Demonstration #Mission at #Moon : NASA
#Asteroid strike caused global #Firestorm that #Incinerated the #Dinosaurs : New Sci
Latest #KnowledgeLinks
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Is #DarkEnergy just #Leftover #Momentum from the #BigBang? : Medium
#NASA Announces New #Spacecraft #Technology #Demonstration #Mission at #Moon : NASA
#Asteroid strike caused global #Firestorm that #Incinerated the #Dinosaurs : New Sci
Latest #KnowledgeLinks
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Is #DarkEnergy just #Leftover #Momentum from the #BigBang? : Medium
#NASA Announces New #Spacecraft #Technology #Demonstration #Mission at #Moon : NASA
#Asteroid strike caused global #Firestorm that #Incinerated the #Dinosaurs : New Sci
Latest #KnowledgeLinks
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Is #DarkEnergy just #Leftover #Momentum from the #BigBang? : Medium
#NASA Announces New #Spacecraft #Technology #Demonstration #Mission at #Moon : NASA
#Asteroid strike caused global #Firestorm that #Incinerated the #Dinosaurs : New Sci
Latest #KnowledgeLinks
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A catalogue of 3,000 supernovae — the largest ever assembled — is challenging existing theories of dark energy
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A catalogue of 3,000 supernovae — the largest ever assembled — is challenging existing theories of dark energy
https://www.universetoday.com/articles/a-new-catalog-of-close-to-3000-supernova-challenges-theories-on-dark-energy
The most comprehensive catalogue of Type Ia supernovae ever assembled has produced new clues about dark energy, the mysterious force driving the universe's accelerating expansion — and some of those c
#science #astronomy #darkenergy -
Weekly Update from the Open Journal of Astrophysics – 16/05/2026
It’s Saturday once again, so time for 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 104 and the total so far published by OJAp up to 552. It took us until late July to pass 100 last year.
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, published on Monday 11th May in the folder High-Energy Astrophysical Phenomena is “Triaxial magnetars as sources of fast radio bursts” by Jonathan I Katz (Washington University, USA). This paper suggests that the mysterious properties of Fast Radio Bursts (FRB) could be explained by triaxial magnetars, with their activity levels influenced by precessional time scales.
The overlay for this paper is here
You can find the officially accepted version on arXiv here and the announcement on Fediverse here:
https://fediscience.org/@OJ_Astro/116554775791392800
The second paper for this week, published on Tuesday 12th May in the folder Astrophysics of Galaxies, is “The Abundance of Thin Dwarf Galaxies: a Challenge for Cosmological Simulations” by Jose Benavides & Laura V. Sales (UC Riverside, USA), Julio F. Navarro (U. Victoria, Canada), Simon D. M. White (MPA Garching, Germany), and Carlos S. Frenk, Kyle A. Oman & Shaun Cole (U. Durham, UK). Depending on mass up to 40% of galaxies are intrinsically flat, a fraction that numerical models of galaxy formation struggle to reproduce suggesting the models are incomplete.
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/116560106342500157
Next one up, the third paper of the week, also published on Tuesday 12th May but in the folder Cosmology and Nongalactic Astrophysics is “Cosmological peculiar velocities in general relativity” by Chris Clarkson (Queen Mary, University of London, UK) and Roy Maartens (U. Western Cape, South Africa). This paper refutes claims that the 1+3 covariant approach to cosmological perturbation theory predicts stronger growth of galaxy peculiar velocities, arguing that standard treatments are correct and fully relativistic.
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/116560224426499932
The fourth paper this week, published on Wednesday May 13th “Possible evidence for a pair-instability supernova nature of ultra-early JWST sources” by Andrea Ferrara & Stefano Carniani (Scuola Normale Superiore, Pisa, Italy), Takahiro Morishita (California Institute of Technology, USA), and Massimo Stiavelli (Space Telescope Science Institute, USA). Published in the section Astrophysics of Galaxies. This paper argues that recent observations challenge early galaxy formation models, suggesting that the bright source, Capotauro, could be a supernova from a massive, metal-free star, not a luminous galaxy as initially thought.
The overlay is here:
The officially accepted version can be found on arXiv here and here is the Mastodon announcement:
https://fediscience.org/@OJ_Astro/116566147448743997
The fifth and final article of this week was also published on Wednesday 13th May but in the folder Cosmology and Nongalactic Astrophysics. The title is “Evolving and interacting dark energy: photometric and spectroscopic synergy with DES Y3 and DESI DR2” and it is by Maria Tsedrik and Benjamin Bose (University of Edinburgh, UK). The study investigates the Dark Scattering interacting dark energy scenario, using data from various sources. Results show no evidence of dark-sector interaction and a preference for the Chevallier-Polarski-Linder parametrisation.
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/116566165139100860
And that concludes this week’s update. I’ll do another next Saturday.
#arXiv251211035v3 #arXiv260104953v3 #arXiv260107374v3 #arXiv260314511v2 #AstrophysicsOfGalaxies #Capotauro #ChevallierPolarskiLinder #cosmicShear #cosmologicalSimulations #CosmologyAndNonGalacticAstrophysics #DarkEnergy #DarkEnergySpectroscopicInstrument #DarkEnergySurvey #DarkScattering #DiamondOpenAccess #DiamondOpenAccessPublishing #dwarfGalaxies #fastRadioBursts #galaxyFormation #generalRelativity #HighEnergyAstrophysicalPhenomena #JWST #Magnetars #OpenAccess #OpenAccessPublishing #peculiarVelocities #supernova -
Weekly Update from the Open Journal of Astrophysics – 16/05/2026
It’s Saturday once again, so time for 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 104 and the total so far published by OJAp up to 552. It took us until late July to pass 100 last year.
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, published on Monday 11th May in the folder High-Energy Astrophysical Phenomena is “Triaxial magnetars as sources of fast radio bursts” by Jonathan I Katz (Washington University, USA). This paper suggests that the mysterious properties of Fast Radio Bursts (FRB) could be explained by triaxial magnetars, with their activity levels influenced by precessional time scales.
The overlay for this paper is here
You can find the officially accepted version on arXiv here and the announcement on Fediverse here:
https://fediscience.org/@OJ_Astro/116554775791392800
The second paper for this week, published on Tuesday 12th May in the folder Astrophysics of Galaxies, is “The Abundance of Thin Dwarf Galaxies: a Challenge for Cosmological Simulations” by Jose Benavides & Laura V. Sales (UC Riverside, USA), Julio F. Navarro (U. Victoria, Canada), Simon D. M. White (MPA Garching, Germany), and Carlos S. Frenk, Kyle A. Oman & Shaun Cole (U. Durham, UK). Depending on mass up to 40% of galaxies are intrinsically flat, a fraction that numerical models of galaxy formation struggle to reproduce suggesting the models are incomplete.
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/116560106342500157
Next one up, the third paper of the week, also published on Tuesday 12th May but in the folder Cosmology and Nongalactic Astrophysics is “Cosmological peculiar velocities in general relativity” by Chris Clarkson (Queen Mary, University of London, UK) and Roy Maartens (U. Western Cape, South Africa). This paper refutes claims that the 1+3 covariant approach to cosmological perturbation theory predicts stronger growth of galaxy peculiar velocities, arguing that standard treatments are correct and fully relativistic.
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/116560224426499932
The fourth paper this week, published on Wednesday May 13th “Possible evidence for a pair-instability supernova nature of ultra-early JWST sources” by Andrea Ferrara & Stefano Carniani (Scuola Normale Superiore, Pisa, Italy), Takahiro Morishita (California Institute of Technology, USA), and Massimo Stiavelli (Space Telescope Science Institute, USA). Published in the section Astrophysics of Galaxies. This paper argues that recent observations challenge early galaxy formation models, suggesting that the bright source, Capotauro, could be a supernova from a massive, metal-free star, not a luminous galaxy as initially thought.
The overlay is here:
The officially accepted version can be found on arXiv here and here is the Mastodon announcement:
https://fediscience.org/@OJ_Astro/116566147448743997
The fifth and final article of this week was also published on Wednesday 13th May but in the folder Cosmology and Nongalactic Astrophysics. The title is “Evolving and interacting dark energy: photometric and spectroscopic synergy with DES Y3 and DESI DR2” and it is by Maria Tsedrik and Benjamin Bose (University of Edinburgh, UK). The study investigates the Dark Scattering interacting dark energy scenario, using data from various sources. Results show no evidence of dark-sector interaction and a preference for the Chevallier-Polarski-Linder parametrisation.
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/116566165139100860
And that concludes this week’s update. I’ll do another next Saturday.
#arXiv251211035v3 #arXiv260104953v3 #arXiv260107374v3 #arXiv260314511v2 #AstrophysicsOfGalaxies #Capotauro #ChevallierPolarskiLinder #cosmicShear #cosmologicalSimulations #CosmologyAndNonGalacticAstrophysics #DarkEnergy #DarkEnergySpectroscopicInstrument #DarkEnergySurvey #DarkScattering #DiamondOpenAccess #DiamondOpenAccessPublishing #dwarfGalaxies #fastRadioBursts #galaxyFormation #generalRelativity #HighEnergyAstrophysicalPhenomena #JWST #Magnetars #OpenAccess #OpenAccessPublishing #peculiarVelocities #supernova -
While the holy grail of #InhomogeneousCosmology is to explain #DarkEnergy as an epiphenomenon of the cosmologically recent formation epoch of #CosmicVoids and other #LargeScaleStructure, #YonadavBarryGinat and #PedroGFerreira have gone for a more modest goal: keeping the #CosmologicalConstant but tacking on void formation to get a sort-of #BeyondLCDM inhomogeneous model that better matches #DES and #DESI results [1].
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Meet #SFUPhysics professor Gopi Mohlabeng! His work aims to solve some fundamental puzzles particle physics cannot explain, like what #darkmatter and #darkenergy are made of, and why there is more matter than anti-matter in the universe. Learn about the mysteries of the dark universe at his talk at #TRIUMF Saturday Morning Lectures this weekend at #SFU Surrey: https://www.eventbrite.ca/e/saturday-morning-lectures-spring-2024-sfu-tickets-807327948627?aff=oddtdtcreator&_gl=1*rjw38o*_ga*MjAwNDc0OTg3NC4xNjg2NjEzNDIy*_ga_R4BCVYL1QF*MTcwNzMzMzQ2Ny41NzMuMS4xNzA3MzM1OTU5LjYwLjAuMA&utm_source=facebook&utm_medium=social&utm_content=43013bc8-d9fa-4f82-89a6-c4018c15de6e #SFUScience #physics #particlephysics
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#InhomogeneousCosmology newsletter December 2022 [1].
Asta Heinesen's "Reconciling a decelerating Universe with cosmological observations" ArXiv:2212.05568 [2] is very nice: it introduces a new theorem that focuses a key question of relativistic cosmology: is #DarkEnergy just a misinterpretation of the structure formation epoch?
Heinesen's theorem uses the past time cone directly.
[1] https://cosmo.torun.pl/pipermail/inhom/2022-December/000021.html
[2] https://arXiv.org/abs/2212.05568 = https://ui.adsabs.harvard.edu/abs/2022arXiv221205568H
