#gravitationalwaves — Public Fediverse posts

🕳️ oddquark // Black Hole Watch — 2026-09-05

A supermassive black hole literally kicked out of its own galaxy by a lopsided merger, now sailing through intergalactic space alone 🚀 Gravity as the ultimate eviction notice. Absolutely unhinged physics.

🔗 https://dailygalaxy.com/2026/09/a-black-hole-was-seen-escaping-its-galaxy/

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

How it all began almost exactly 31 years ago:

Karsten Danzmann breaks the ground for the German-British gravitational-wave detector GEO600 on 4 September 1995. He did not have to dig the two 600 meter long arm trenches all by himself, though 😉

Until the end of 1995 the foundations for the central building were done and the arm trenches were prepared.

➡️ https://www.geo600.org/66095/1995

#GEO600Highlights #GEO600 ^#Research #ScienceHistory #GravitationalWaves

🕳️ oddquark // Black Hole Watch — 2026-09-04

The record-breaking merger might be a mass illusion from spin-precession warping the waveform! Wild that spacetime ripples can trick our mass estimates this badly 🌀🕳️

🔗 https://phys.org/news/2026-09-biggest-black-hole-merger-massive.html

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-09-04

The record-breaking merger might be a mass illusion from spin-precession warping the waveform! Wild that spacetime ripples can trick our mass estimates this badly 🌀🕳️

🔗 https://phys.org/news/2026-09-biggest-black-hole-merger-massive.html

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-09-03

A LIGO signal matching a 137+101 solar mass merger forming a 230-mass hole might actually be something even weirder in disguise! Nature loves to troll our detectors right at the edge of the pair-instability mass gap 🌀

🔗 https://www.science.org/content/article/extreme-black-hole-merger-may-be-cosmic-illusion

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-09-03

A LIGO signal matching a 137+101 solar mass merger forming a 230-mass hole might actually be something even weirder in disguise! Nature loves to troll our detectors right at the edge of the pair-instability mass gap 🌀

🔗 https://www.science.org/content/article/extreme-black-hole-merger-may-be-cosmic-illusion

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

🕳️ oddquark // Black Hole Watch — 2026-09-03

A LIGO signal matching a 137+101 solar mass merger forming a 230-mass hole might actually be something even weirder in disguise! Nature loves to troll our detectors right at the edge of the pair-instability mass gap 🌀

🔗 https://www.science.org/content/article/extreme-black-hole-merger-may-be-cosmic-illusion

#BlackHole #Astrophysics #GravitationalWaves #EventHorizon

Weekly Update from the Open Journal of Astrophysics – 06/06/2026

Another Saturday, 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 119 and the total so far published by OJAp up to 567.

I will continue to include the posts made on our Mastodon account (on Fediscience); these announcements also show the DOI for each paper.

The first paper to report this week, published on Tuesday 2nd June, is “The impact of the formation channel on gravitational-wave-galaxy cross-correlations” by Kabir Chakravarti (Chennai Mathematical Institute, India) and Federico R Urban (CEICO-FZU, Czech Republic). This article, published in the folder Cosmology and Nongalactic Astrophysics, explores how uncertainties in binary formation affect the cross-correlation signal between gravitational wave events and galaxy catalogues, finding that time-delay distribution significantly impacts the signal.

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/116679308847047911

The second paper for this week, also published on Tuesday 2nd June but in the folder High-Energy Astrophysical Phenomena, is “Transient X-ray Sources as Extremely Eccentric Mass-Transfer Binaries with Compact Companions” by Jonathan I Katz and Michael A Nowak (Washington University, St Louis, USA). This article suggests that X-ray transients, similar to tidal disruption events, are produced in eccentric stellar-compact object binaries, with their frequency gradually increasing over time.

The overlay for this one looks like this:

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

https://fediscience.org/@OJ_Astro/116679395198117735

Next one up, the third paper of the week, also published on Tuesday 2nd June in the folder High-Energy Astrophysical Phenomena is “Resolving the (Debate About) Nozzle Shocks in Tidal Disruption Events” by Zachary L. Andalman & Eliot Quataert (Princeton U., USA), Eric R. Coughlin (Syracuse U. USA) and C. J. Nixon (U. Leeds, UK). This paper presents a model to understand the role of nozzle shocks in the circularization of stellar debris during a tidal disruption event when a star approaches a supermassive black hole (SMBH)

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/116679426224933831

The fourth paper this week, published on Wednesday 3rd June in the folder Cosmology and Nongalactic Astrophysics, is “Validating Digital Twins of the Local Universe with the Thermal Sunyaev-Zel’dovich Signal” by Richard Stiskalek (University of Oxford, UK) and Harry Desmond (University of Portsmouth, UK). The thermal Sunyaev-Zel’dovich effect and constrained simulations are used to analyze the thermal pressure of ionized gas in galaxy clusters and produce a set of digital twins for cosmological study.

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/116684470440285496

The fifth and final paper this week, published on Thursday 4th June in the folder Cosmology and Nongalactic Astrophysics is “Photon (Non)Conservation in the Reduced Speed of Light Approximation and How to (Almost) Fix It” by Nickolay Y. Gnedin (University of Chicago, USA). The “Reduced Speed of Light” approximation in cosmological simulations can lead to photon non-conservation, and while some missing photons can be counted, adding them back is challenging.

The overlay for this one is here:

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

https://fediscience.org/@OJ_Astro/116691566968428861

And that concludes this week’s update. I’ll do another one next Saturday.

💡 Breakthrough in simulating how neutron stars collide 💥

Longest self-consistent numerical-relativity simulation to date reveals details of black hole and jet formation and advances multi-messenger astronomy.

ℹ️ https://www.aei.mpg.de/1249127/breakthrough-in-simulating-how-neutron-stars-collide

📄 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.134.211407

Picture: K. Hayashi / @mpi_grav

#NeutronStar #Astrophysics #BlackHole #MultiMessengerAstronomy #Kilonova #Jet #Astronomy #GravitationalWaves

Five days ago marked the sixth anniversary of the detection of gravitational-wave signal GW190425 (https://astrodon.social/@mpi_grav/114399427478636217). It came from a binary neutron star merger.

These events emit both gravitational waves and electromagnetic signals. This could help solve long-standing questions in fundamental physics research with multi-messenger astrophysics.

For more information on multi-messenger astrophysics, see this article on our portal “Einstein Online”: https://www.einstein-online.info/en/spotlight/multi-messenger-astrophysics/

#NeutronStars #GravitationalWaves #MultiMessengerAstronomy

Nominations sought for two director positions at our Hannover institute:

The @mpi_grav has two openings for directors and scientific members of the @maxplanckgesellschaft.

➡️ Nominations sought for the position of director at the @mpi_grav in the area of third generation ground-based gravitational wave observatories: https://www.aei.mpg.de/1196299/nominations-director-hannover-3g-gw-observatories

➡️ Nominations sought for the position of director at the @mpi_grav in the area of observational astrophysics, cosmology, dark matter, dark energy and/or gravity: https://www.aei.mpg.de/1196313/nominations-director-hannover-mma-ap-cos-dm-de-g

#MaxPlanckSociety #Director #Job #GravitationalPhysics #GravitationalWaves #EinsteinTelescope #CosmicExplorer #MultiMessengerAstronomy #Astrophysics #Cosmology #DarkMatter #DarkEnergy

Nominations sought for two director positions at our Hannover institute:

The @mpi_grav has two openings for directors and scientific members of the @maxplanckgesellschaft.

➡️ Nominations sought for the position of director at the @mpi_grav in the area of third generation ground-based gravitational wave observatories: https://www.aei.mpg.de/1196299/nominations-director-hannover-3g-gw-observatories

➡️ Nominations sought for the position of director at the @mpi_grav in the area of observational astrophysics, cosmology, dark matter, dark energy and/or gravity: https://www.aei.mpg.de/1196313/nominations-director-hannover-mma-ap-cos-dm-de-g

#MaxPlanckSociety #Director #Job #GravitationalPhysics #GravitationalWaves #EinsteinTelescope #CosmicExplorer #MultiMessengerAstronomy #Astrophysics #Cosmology #DarkMatter #DarkEnergy

Nominations sought for two director positions at our Hannover institute:

The @mpi_grav has two openings for directors and scientific members of the @maxplanckgesellschaft.

➡️ Nominations sought for the position of director at the @mpi_grav in the area of third generation ground-based gravitational wave observatories: https://www.aei.mpg.de/1196299/nominations-director-hannover-3g-gw-observatories

➡️ Nominations sought for the position of director at the @mpi_grav in the area of observational astrophysics, cosmology, dark matter, dark energy and/or gravity: https://www.aei.mpg.de/1196313/nominations-director-hannover-mma-ap-cos-dm-de-g

#MaxPlanckSociety #Director #Job #GravitationalPhysics #GravitationalWaves #EinsteinTelescope #CosmicExplorer #MultiMessengerAstronomy #Astrophysics #Cosmology #DarkMatter #DarkEnergy

Nominations sought for two director positions at our Hannover institute:

The @mpi_grav has two openings for directors and scientific members of the @maxplanckgesellschaft.

➡️ Nominations sought for the position of director at the @mpi_grav in the area of third generation ground-based gravitational wave observatories: https://www.aei.mpg.de/1196299/nominations-director-hannover-3g-gw-observatories

➡️ Nominations sought for the position of director at the @mpi_grav in the area of observational astrophysics, cosmology, dark matter, dark energy and/or gravity: https://www.aei.mpg.de/1196313/nominations-director-hannover-mma-ap-cos-dm-de-g

#MaxPlanckSociety #Director #Job #GravitationalPhysics #GravitationalWaves #EinsteinTelescope #CosmicExplorer #MultiMessengerAstronomy #Astrophysics #Cosmology #DarkMatter #DarkEnergy

Nominations sought for two director positions at our Hannover institute:

The @mpi_grav has two openings for directors and scientific members of the @maxplanckgesellschaft.

➡️ Nominations sought for the position of director at the @mpi_grav in the area of third generation ground-based gravitational wave observatories: https://www.aei.mpg.de/1196299/nominations-director-hannover-3g-gw-observatories

➡️ Nominations sought for the position of director at the @mpi_grav in the area of observational astrophysics, cosmology, dark matter, dark energy and/or gravity: https://www.aei.mpg.de/1196313/nominations-director-hannover-mma-ap-cos-dm-de-g

#MaxPlanckSociety #Director #Job #GravitationalPhysics #GravitationalWaves #EinsteinTelescope #CosmicExplorer #MultiMessengerAstronomy #Astrophysics #Cosmology #DarkMatter #DarkEnergy

Nominations sought for two director positions at our Hannover institute:

The @mpi_grav has two openings for directors and scientific members of the @maxplanckgesellschaft.

➡️ Nominations sought for the position of director at the @mpi_grav in the area of third generation ground-based gravitational wave observatories: https://www.aei.mpg.de/1196299/nominations-director-hannover-3g-gw-observatories

➡️ Nominations sought for the position of director at the @mpi_grav in the area of observational astrophysics, cosmology, dark matter, dark energy and/or gravity: https://www.aei.mpg.de/1196313/nominations-director-hannover-mma-ap-cos-dm-de-g

#MaxPlanckSociety #Director #Job #GravitationalPhysics #GravitationalWaves #EinsteinTelescope #CosmicExplorer #MultiMessengerAstronomy #Astrophysics #Cosmology #DarkMatter #DarkEnergy

Nominations sought for two director positions at our Hannover institute:

The @mpi_grav has two openings for directors and scientific members of the @maxplanckgesellschaft.

➡️ Nominations sought for the position of director at the @mpi_grav in the area of third generation ground-based gravitational wave observatories: https://www.aei.mpg.de/1196299/nominations-director-hannover-3g-gw-observatories

➡️ Nominations sought for the position of director at the @mpi_grav in the area of observational astrophysics, cosmology, dark matter, dark energy and/or gravity: https://www.aei.mpg.de/1196313/nominations-director-hannover-mma-ap-cos-dm-de-g

#MaxPlanckSociety #Director #Job #GravitationalPhysics #GravitationalWaves #EinsteinTelescope #CosmicExplorer #MultiMessengerAstronomy #Astrophysics #Cosmology #DarkMatter #DarkEnergy

New profile picture of the Max Planck Fellow Group “Multi-messenger Astrophysics of Compact Binaries”, which strengthens the collaboration between @mpi_grav and @unipotsdam.

ℹ️ https://www.aei.mpg.de/MMA

The image visualizes the merger of two neutron stars (from left to right). 1/2

#MultimessengerAstronomy #Astrophysics #GravitationalWaves #Neutrinos #Relativity #NeutronStars

👾UAP TIC TAC WARP CORE
🔥METHOD FOR GENERATING ULTRA HIGH FREQUENCY #GravitationalWaves, #Warpdrives, #Wormholes & #UAP:

👽http://doi.org/10.48550/arXiv.2306.06133

🛸Azimuthal acceleration beyond #Unruh threshold of multi-layer, multi-pass #RHED plasma & charged particle rings generate #SpaceTime #WarpBubbles.

#UAPTicTac #WarpReactor #WarpCore #FusionEnergy #WarpDrive #Wormhole #TimeTravel #UFO #Truth #Physics #Engineering #PulsedPower #QuantumGravity #Relativity #Accelerator #SpaceTime #Gravity #PlasmaPhysics

🔥Method for Generating Ultra High Frequency #GravitationalWaves, #Warpdrives, #Wormholes & #UAP:

👽https://doi.org/10.48550/arXiv.2306.06133

🛸Azimuthal acceleration beyond Unruh threshold of multi-layer, multi-pass RHED plasma & charged particle rings generate spacetime phase transitions or warp bubbles

#InPlainSight #Truth #WarpReactor #WarpCore #FusionEnergy #WarpDrive #Wormhole #TimeTravel #Physics #Engineering #PulsedPower #UAP #UFO #QuantumGravity #Relativity #Accelerator #SpaceTime #Gravity #PlasmaPhysics

Method for Generating Ultra High Frequency #GravitationalWaves, #Warpdrives & #Wormholes:

👉https://doi.org/10.48550/arXiv.2306.06133

Azimuthal acceleration beyond Unruh threshold of multi-layer, multi-pass RHED plasma & charged particle rings generate spacetime phase transitions or warp bubbles.

#WarpReactor #WarpCore #FusionEnergy #WarpDrive #Wormhole #TimeTravel #Physics #Engineering #PulsedPower #UAP #QuantumGravity #Relativity #Accelerator #SpaceTime #Gravity #PlasmaPhysics

Yesterday I gave my first PhD talk at the Astronomical Society of Australia’s Annual Science Meeting on my fav millisecond pulsar - PSR J1713+0747.

The pulsar that threw a tantrum!

Millisecond pulsars are used in pulsar timing arrays as they’re considered stable rotators over the long term. That is vote to helping us search for gravitational wave backgrounds - the big news that we announced last week.

But this very well know millisecond pulsar decided to undergo a massive magnetospheric reconfiguration in 2021 - only the second millisecond pulsar that we know off to exhibit this strange behavior!

In my PhD I will be exploring to see why this happened and if other millisecond pulsars might be doing this on a smaller scale. Maybe they’re not so stable after all … ask me again in three years!

#Astrodon #RadioAstronomy #Astrophysics #Pulsars #PulsarTiming #GravitationalWaves

Method for Generating Ultra High Frequency #GravitationalWaves, #Warpdrives & #Wormholes:

👉https://doi.org/10.48550/arXiv.2306.06133

Azimuthal acceleration beyond Unruh threshold of multi-pass RHED plasma & charged particle rings to generate Leidenfrost-like vortex tunnels of spacetime phase transition.

#WarpReactor #WarpCore #FusionEnergy #WarpDrive #Wormhole #Physics #Engineering #PulsedPower #QuantumGravity #Relativity #Accelerator #SpaceTime #Gravity #PlasmaPhysics

"#Astrophysicists in the #NanoGrav collaboration have found evidence for HUGE #gravitationalwaves that could be due to merging supermassive #blackholes. This was all possible due to pulsar timing arrays which triangulate the positions of pulsars across our galaxy to work out of the distances between them change due to a passing light year long #gravitationalwave!"

- Dr. Becky Smethurst, #astrophysicist at the University of Oxford (Christ Church).

🕳🕳🌊👀 https://www.instagram.com/p/CuExmnIAYVD/?hl=en

"Gorgeous, this"

yoda would surely agree.

#gravitationalwaves #NANOGrav

Thread🧵by cosmologist Katie Mack about #NanoGrav news and how pulsar timing array observations can be filtered to find effects of low-frequency #GravitationalWaves. (As opposed to LIGO which measures high-frequency GW.)
[please excuse the bird-site thread link. I can edit the link if @AstroKatie cross-posts the thread via her Mastodon acct. hint hint... 😏 ]
https://twitter.com/AstroKatie/status/1674207104750460929 #astronomy

"Astrophysicists report solid evidence for a background hum of gravitational waves" by @geekwire / @alanboyle - Discovery: precise timing of pulsar radio signals from across the galaxy indicates effects of low-frequency #GravitationalWaves. https://www.geekwire.com/2023/evidence-hum-gravitational-waves/ #nanograv #astronomy

NANOGrav hears “hum” of gravitational wave background, louder than expected - Enlarge / In this artist’s interpretation, a pair of supermassive black... - https://arstechnica.com/?p=1950301 #supermassiveblackholes #gravitationalwaves #astrophysics #astronomy #cosmology #nanograv #science #physics #ligo

Fifteen years of #pulsar radio readings have produced the best evidence yet that supermassive #blackholes are generating a background "hum" of #gravitationalwaves. https://www.geekwire.com/2023/evidence-hum-gravitational-waves/ #Space #NANOGrav

Scientists find evidence of a gravitational wave ‘hum’
Astrophysicists have found the best evidence yet for a low-frequency “hum” of gravitational waves rippling through the cosmos, based on 15 years’ worth of ultra-precise measurements checking the timing of radio pulses from distant stars.

The evidence, newly publis
https://cosmiclog.com/2023/06/28/scientists-find-evidence-of-a-gravitational-wave-hum/
#GeekWire #Astronomy #BlackHoles #GravitationalWaves #NANOGrav #Physics #Space

@pomarede

#pulsar #pulsars #pulsartiming #nanograv #physics #universe #astronomy #astrophysics #Astrodon #science #cover #covers #sciencecovers #space #research #gravitationalwaves #relativity #generalrelativity #cosmology

I am excited for the upcoming news from pulsar timing arrays on their search for #GravitationalWaves. Results from International Pulsar Timing Array teams will be shared at 0:00 UTC. I don't know what these will be. However… 1/🧵

#Astrodon #PulsarTiming #Space #Science

"Big Gravitational Wave Announcement Is Coming Thursday" by @ScienceAlert - Coordinated science research announcement scheduled 1pm EDT Thursday, June 29. https://www.sciencealert.com/a-big-gravitational-wave-announcement-is-coming-thursday-heres-why-were-excited #nanograv #gravitationalwaves #astronomy

Well, since we are bracing for the impact of an imminent major announcement on pulsars and, maybe, some gravitational wave background, why not enjoy this 2004 special Science Magazine issue on pulsars!

https://science.org/toc/science/304/5670
see in particular the paper by Ingrid Stairs p.547

#pulsar #pulsars #pulsartiming #nanograv #physics #universe #astronomy #astrophysics #astrodon #science #cover #covers #sciencecovers #space #research #gravitationalwaves #relativity #generalrelativity #cosmology

Will a project "using #pulsars to search for low-frequency #GravitationalWaves" report a significant detection next week? Says https://nitter.net/NANOGrav/status/1671655089478443012: "Mark your calendars and get ready for a major announcement from the #NANOGrav collaboration on June 29th!" And - coincidence? - a big primer about Pulsar Timing Arrays such as NANOGrav appeared only days ago at https://www.spaceaustralia.com/feature/humanitys-galactic-scale-detectors-pulsar-timing-arrays

Did you know, we have a detector the size of the Galaxy?! But what the heck can we use it for?

Well, we're looking for the gravitational wave background, and we're using pulsars to do it!

In part three of this series, I take a dive into what Pulsar Timing Arrays are, some of the challenges they face & how they can improve their sensitivity.

https://www.spaceaustralia.com/feature/humanitys-galactic-scale-detectors-pulsar-timing-arrays

#SpaceAustralia #Pulsars #PulsarTiming #GravitationalWaves #Astrophysics #Astrodon #RadioAstronomy

📸NR Fuller/Science

There's a dull roar that rumbles across the Universe: the gravitational wave background (GWB).

In part two of this special series, I dive into what the GWB is, what happens when #PulsarTiming Arrays around the world will finally make the first detection of this yet-to-be-discovered signal, and how it fits into the wider gravitational wave spectrum.

https://www.spaceaustralia.com/feature/universes-roaring-low-frequency-gravitational-wave-background

#SpaceAustralia #GravitationalWaves #Astrodon #Pulsars #Astrophysics #Astronomy

📸 NASA Visualisation Tea