#pulsars — Public Fediverse posts

New in the #VirtualObservatory: “NS in binary systems kick velocities study” by O'Doherty T.N. et al.
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/521/2504
#ProperMotions #Photometry #MultipleStars #Pulsars

Weekly Update from the Open Journal of Astrophysics – 23/05/2026

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 six papers, bringing the number in Volume 9 (2026) to 110 and the total so far published by OJAp up to 558.

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 Monday 18th May in the folder Instrumentation and Methods for Astrophysics is “Edges In Coadded Images” by Erin Sheldon (Brookhaven National Laboratory, USA). This paper describes a study exploring how image discontinuities and noise impact weak gravitational lensing measurements, finding no significant biases under typical conditions. Biases occur only in extreme cases, but can be mitigated.

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/116594222032390191

The second paper for this week, also published on Monday 18th May but in the folder Cosmology and Nongalactic Astrophysics, is “Joint cosmological fits to DESI-DR1 full-shape clustering and weak gravitational lensing in configuration space” by A. Semenaite (Swinburne Institute of Technology, Australia) and 72 other authors from all round the world. This paper presents a cosmological analysis of correlations between the DESI-DR1 Bright Galaxy Survey and Luminous Red Galaxy samples and overlapping shear measurements from various weak lensing surveys.

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/116594256215421009

Next one up, the third paper of the week, and the third published on Monday 18th May, and in the folder Cosmology and Nongalactic Astrophysics is “Probing Dark Energy Microphysics with kSZ Tomography” by Julius Adolff, Selim Hotinli and Neal Dalal (all of the Perimeter Institute, Canada). This paper explores how kinetic Sunyaev-Zel’dovich tomography and galaxy clustering can enhance our understanding of dark energy and its effects, potentially revealing its microphysical properties in future 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/116594304124291605

The fourth paper this week, published on Wednesday May 20th is “A Census of Variable Radio Sources at 3 GHz” by Yjan A. Gordon, Peter S. Ferguson, Michael N. Martinez and Eric J. Hooper (all of the University of Wisconsin, USA). This article, published in the folder Astrophysics of Galaxies, uses data from the Very Large Array Sky Survey to analyze variability in the radio sky, finding most changes consistent with blazars and quasars.

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/116607468481260244

The fifth article of this week was published on Friday 22nd May in the folder Instrumentation and Methods for Astrophysics. The title is “Uncovering the Next Galactic Supernova with the Vera C. Rubin Observatory” by John Banovetz (Lawrence Berkeley Lab., USA), Claire-Alice Hebert & Peter B. Denton (Brookhaven National Lab., USA), Dan Scolnic (Duke University, USA), Anze Slosar (Brookhaven) and Chris Walter (Duke). The paper presents a study simulating how effectively the Vera C. Rubin Observatory can localize supernovae using neutrino triggers, finding a 57-97% success rate based on stellar mass density predictions.

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/116617293753093751

Last, but by no means least, this week we have “Pulsar timing solutions for 17 pulsars at 150 MHz from the Irish LOFAR station” by David J. McKenna (ASTRON, The Netherlands), Evan F. Keane (Trinity College Dublin, Ireland), Peter T. Gallagher (DIAS, Ireland) and Joe McCauley (Trinity). This was published on Friday 22nd May in the folder High-Energy Astrophysical Phenomena. It presents a demonstration of the use of international Low Frequency Array (LOFAR) stations in tracking and characterizing pulsars, providing new insights into these neutron stars’ emission properties.

The overlay for this one 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/116617404344791486

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

Weekly Update from the Open Journal of Astrophysics – 23/05/2026

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 six papers, bringing the number in Volume 9 (2026) to 110 and the total so far published by OJAp up to 558.

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 Monday 18th May in the folder Instrumentation and Methods for Astrophysics is “Edges In Coadded Images” by Erin Sheldon (Brookhaven National Laboratory, USA). This paper describes a study exploring how image discontinuities and noise impact weak gravitational lensing measurements, finding no significant biases under typical conditions. Biases occur only in extreme cases, but can be mitigated.

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/116594222032390191

The second paper for this week, also published on Monday 18th May but in the folder Cosmology and Nongalactic Astrophysics, is “Joint cosmological fits to DESI-DR1 full-shape clustering and weak gravitational lensing in configuration space” by A. Semenaite (Swinburne Institute of Technology, Australia) and 72 other authors from all round the world. This paper presents a cosmological analysis of correlations between the DESI-DR1 Bright Galaxy Survey and Luminous Red Galaxy samples and overlapping shear measurements from various weak lensing surveys.

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/116594256215421009

Next one up, the third paper of the week, and the third published on Monday 18th May, and in the folder Cosmology and Nongalactic Astrophysics is “Probing Dark Energy Microphysics with kSZ Tomography” by Julius Adolff, Selim Hotinli and Neal Dalal (all of the Perimeter Institute, Canada). This paper explores how kinetic Sunyaev-Zel’dovich tomography and galaxy clustering can enhance our understanding of dark energy and its effects, potentially revealing its microphysical properties in future 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/116594304124291605

The fourth paper this week, published on Wednesday May 20th is “A Census of Variable Radio Sources at 3 GHz” by Yjan A. Gordon, Peter S. Ferguson, Michael N. Martinez and Eric J. Hooper (all of the University of Wisconsin, USA). This article, published in the folder Astrophysics of Galaxies, uses data from the Very Large Array Sky Survey to analyze variability in the radio sky, finding most changes consistent with blazars and quasars.

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/116607468481260244

The fifth article of this week was published on Friday 22nd May in the folder Instrumentation and Methods for Astrophysics. The title is “Uncovering the Next Galactic Supernova with the Vera C. Rubin Observatory” by John Banovetz (Lawrence Berkeley Lab., USA), Claire-Alice Hebert & Peter B. Denton (Brookhaven National Lab., USA), Dan Scolnic (Duke University, USA), Anze Slosar (Brookhaven) and Chris Walter (Duke). The paper presents a study simulating how effectively the Vera C. Rubin Observatory can localize supernovae using neutrino triggers, finding a 57-97% success rate based on stellar mass density predictions.

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/116617293753093751

Last, but by no means least, this week we have “Pulsar timing solutions for 17 pulsars at 150 MHz from the Irish LOFAR station” by David J. McKenna (ASTRON, The Netherlands), Evan F. Keane (Trinity College Dublin, Ireland), Peter T. Gallagher (DIAS, Ireland) and Joe McCauley (Trinity). This was published on Friday 22nd May in the folder High-Energy Astrophysical Phenomena. It presents a demonstration of the use of international Low Frequency Array (LOFAR) stations in tracking and characterizing pulsars, providing new insights into these neutron stars’ emission properties.

The overlay for this one 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/116617404344791486

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

SNRs are classified by their emission structure. Shell-type remnants show limb-brightened radio emission. Crab-like remnants are pulsar wind nebulae. Composite remnants combine both a shell and a central pulsar wind nebula.

#SNR #Pulsars #Astronomy

SNRs are classified by their emission structure. Shell-type remnants show limb-brightened radio emission. Crab-like remnants are pulsar wind nebulae. Composite remnants combine both a shell and a central pulsar wind nebula.

#SNR #Pulsars #Astronomy

SNRs are classified by their emission structure. Shell-type remnants show limb-brightened radio emission. Crab-like remnants are pulsar wind nebulae. Composite remnants combine both a shell and a central pulsar wind nebula.

#SNR #Pulsars #Astronomy

SNRs are classified by their emission structure. Shell-type remnants show limb-brightened radio emission. Crab-like remnants are pulsar wind nebulae. Composite remnants combine both a shell and a central pulsar wind nebula.

#SNR #Pulsars #Astronomy

I am so very excited to share this story. Def. a career highlight!

Having the opportunity to sit down and have a one-on-one candid chat with the woman who discovered pulsars and changed the course of astrophysics, leading to me being extremely passionate about this topic and eventually moving into a career of pulsar astronomy. Yeah, this was big.

I hope you enjoy this interview, where Prof. Bell Burnell offers some personal insight into the history of the big discovery as well as the legacy of one of astronomy’s most iconic and influential figures.

What an honour it is to tell this story!

https://www.spaceaustralia.com/feature/interview-dame-professor-jocelyn-bell-burnell

📸 University of Cambridge

#SpaceAustralia #RadioAstronomy #Pulsars #JocelynBellBurnell #Astrophysics #Science #Astrodon

I am so very excited to share this story. Def. a career highlight!

Having the opportunity to sit down and have a one-on-one candid chat with the woman who discovered pulsars and changed the course of astrophysics, leading to me being extremely passionate about this topic and eventually moving into a career of pulsar astronomy. Yeah, this was big.

I hope you enjoy this interview, where Prof. Bell Burnell offers some personal insight into the history of the big discovery as well as the legacy of one of astronomy’s most iconic and influential figures.

What an honour it is to tell this story!

https://www.spaceaustralia.com/feature/interview-dame-professor-jocelyn-bell-burnell

📸 University of Cambridge

#SpaceAustralia #RadioAstronomy #Pulsars #JocelynBellBurnell #Astrophysics #Science #Astrodon

Today was a good day. I got to meet one of my heroes.

Got to spend one-on-one time with the woman who discovered pulsars, Dame Prof. Jocelyn Bell Burnell, and interview her for a #SpaceAustralia article 🥺🥺🥺

And she signed a copy of my first-ever PhD paper which I will now have framed and remember forever! 😭😭😭

She is the most humble, nicest person. Just kindness, personified. And such an extremely interesting life - as you can imagine.

I'll publish my article and interview with her in about 12 hours from now (around 8:30am Sydney time) - so keep an eye out for it.

Thanks to Manisha Caleb who took this photo of us.

#Pulsars #RadioAstronomy #JocelynBellBurnell #Astrodon #Science #Astrophysics

Today was a good day. I got to meet one of my heroes.

Got to spend one-on-one time with the woman who discovered pulsars, Dame Prof. Jocelyn Bell Burnell, and interview her for a #SpaceAustralia article 🥺🥺🥺

And she signed a copy of my first-ever PhD paper which I will now have framed and remember forever! 😭😭😭

She is the most humble, nicest person. Just kindness, personified. And such an extremely interesting life - as you can imagine.

I'll publish my article and interview with her in about 12 hours from now (around 8:30am Sydney time) - so keep an eye out for it.

Thanks to Manisha Caleb who took this photo of us.

#Pulsars #RadioAstronomy #JocelynBellBurnell #Astrodon #Science #Astrophysics

*** EXCITING NEWS ****

Dame Prof. Jocelyn Bell Burnell is coming to Sydney!

A few of us early-career scientists will be sharing our science and the stage with her.

BUT BUT BUT ... I've been granted a one-on-one interview with her for a #SpaceAustralia article!

What an honour!

I get to spend time / have a chat with the woman who discovered pulsars (the objects that I research) - and then be able to share that story with everyone.

It's a huge thing for me!

To be able to write the story, from first-hand account, of that of a Titan in my field of research / astronomy!

JBB will be in Sydney from next week and is also giving a public lecture at the University of Sydney.

Sadly, it looks like the event has already sold out for those who couldn't grab tickets, but keep an eye out for my SpaceAustralia article - will be released on 21st October!

#Pulsars #Science #RadioAstronomy #Astrophysics #JocelynBellBurnell #Astrodon

*** EXCITING NEWS ****

Dame Prof. Jocelyn Bell Burnell is coming to Sydney!

A few of us early-career scientists will be sharing our science and the stage with her.

BUT BUT BUT ... I've been granted a one-on-one interview with her for a #SpaceAustralia article!

What an honour!

I get to spend time / have a chat with the woman who discovered pulsars (the objects that I research) - and then be able to share that story with everyone.

It's a huge thing for me!

To be able to write the story, from first-hand account, of that of a Titan in my field of research / astronomy!

JBB will be in Sydney from next week and is also giving a public lecture at the University of Sydney.

Sadly, it looks like the event has already sold out for those who couldn't grab tickets, but keep an eye out for my SpaceAustralia article - will be released on 21st October!

#Pulsars #Science #RadioAstronomy #Astrophysics #JocelynBellBurnell #Astrodon

Beautiful cover arts for the latest issues of Nature and Nature Astronomy

Credits:
1. Erik Wernquist/Dylan Nelson (IllustrisTNG Collaboration)/Martijn Oei
2. Carl Knox, OzGrav - Swinburne University of Technology. Cover design: Bethany Vukomanovic

#Astronomy #Astrophysics #Nature #NatureAstronomy #cover #art #covertart #Porphyrion #SMBH #blackhole #blackholes #Cosmology #CosmicWeb #Universe #pulsar #pulsars #ASKAP #radiotelescope #NeutronStar #WhiteDwarf #star #stars #science #STEM #Astrodon

Beautiful cover arts for the latest issues of Nature and Nature Astronomy

Credits:
1. Erik Wernquist/Dylan Nelson (IllustrisTNG Collaboration)/Martijn Oei
2. Carl Knox, OzGrav - Swinburne University of Technology. Cover design: Bethany Vukomanovic

#Astronomy #Astrophysics #Nature #NatureAstronomy #cover #art #covertart #Porphyrion #SMBH #blackhole #blackholes #Cosmology #CosmicWeb #Universe #pulsar #pulsars #ASKAP #radiotelescope #NeutronStar #WhiteDwarf #star #stars #science #STEM #Astrodon

Beautiful cover arts for the latest issues of Nature and Nature Astronomy

Credits:
1. Erik Wernquist/Dylan Nelson (IllustrisTNG Collaboration)/Martijn Oei
2. Carl Knox, OzGrav - Swinburne University of Technology. Cover design: Bethany Vukomanovic

#Astronomy #Astrophysics #Nature #NatureAstronomy #cover #art #covertart #Porphyrion #SMBH #blackhole #blackholes #Cosmology #CosmicWeb #Universe #pulsar #pulsars #ASKAP #radiotelescope #NeutronStar #WhiteDwarf #star #stars #science #STEM #Astrodon

Beautiful cover arts for the latest issues of Nature and Nature Astronomy

Credits:
1. Erik Wernquist/Dylan Nelson (IllustrisTNG Collaboration)/Martijn Oei
2. Carl Knox, OzGrav - Swinburne University of Technology. Cover design: Bethany Vukomanovic

#Astronomy #Astrophysics #Nature #NatureAstronomy #cover #art #covertart #Porphyrion #SMBH #blackhole #blackholes #Cosmology #CosmicWeb #Universe #pulsar #pulsars #ASKAP #radiotelescope #NeutronStar #WhiteDwarf #star #stars #science #STEM #Astrodon

Beautiful cover arts for the latest issues of Nature and Nature Astronomy

Credits:
1. Erik Wernquist/Dylan Nelson (IllustrisTNG Collaboration)/Martijn Oei
2. Carl Knox, OzGrav - Swinburne University of Technology. Cover design: Bethany Vukomanovic

#Astronomy #Astrophysics #Nature #NatureAstronomy #cover #art #covertart #Porphyrion #SMBH #blackhole #blackholes #Cosmology #CosmicWeb #Universe #pulsar #pulsars #ASKAP #radiotelescope #NeutronStar #WhiteDwarf #star #stars #science #STEM #Astrodon

Gravitational waves produce a background hum across the whole universe |

The fabric of the universe is constantly rippling, according to astronomers who have discovered a background buzz of #gravitational #waves. These waves may be produced by #supermassive #black #holes merging across the universe, but they might also have more exotic origins, such as leftover ripples in space-time created shortly after the #big #bang.

Pinning down their true nature could tell us about how supermassive black holes grow and affect their host galaxies, or even about how the universe evolved in its first moments.

To find this mysterious hum, astronomers have been tracking rapidly rotating neutron stars called #pulsars that blast out light with extreme regularity. By looking at different pulsars across the Milky Way, astronomers can effectively use them as a galaxy-sized gravitational-wave #detector called a pulsar #timing #array.

While individual gravitational waves, which are ripples in space-time created by massive objects colliding, have been seen regularly since the first detection in 2015, the object of this search is different. Those previous gravitational waves all have a #localised origin and rise and fall hundreds of times a second, but the newly-discovered signal is more like a gravitational wave #background that would permeate the entire universe at much #lower #frequencies, similar in concept to the cosmic microwave background, which is radiation left over by the big bang and seen all over the universe today.

https://www.newscientist.com/article/2380451-gravitational-waves-produce-a-background-hum-across-the-whole-universe/

Gravitational waves produce a background hum across the whole universe |

The fabric of the universe is constantly rippling, according to astronomers who have discovered a background buzz of #gravitational #waves. These waves may be produced by #supermassive #black #holes merging across the universe, but they might also have more exotic origins, such as leftover ripples in space-time created shortly after the #big #bang.

Pinning down their true nature could tell us about how supermassive black holes grow and affect their host galaxies, or even about how the universe evolved in its first moments.

To find this mysterious hum, astronomers have been tracking rapidly rotating neutron stars called #pulsars that blast out light with extreme regularity. By looking at different pulsars across the Milky Way, astronomers can effectively use them as a galaxy-sized gravitational-wave #detector called a pulsar #timing #array.

While individual gravitational waves, which are ripples in space-time created by massive objects colliding, have been seen regularly since the first detection in 2015, the object of this search is different. Those previous gravitational waves all have a #localised origin and rise and fall hundreds of times a second, but the newly-discovered signal is more like a gravitational wave #background that would permeate the entire universe at much #lower #frequencies, similar in concept to the cosmic microwave background, which is radiation left over by the big bang and seen all over the universe today.

https://www.newscientist.com/article/2380451-gravitational-waves-produce-a-background-hum-across-the-whole-universe/

Jocelyn Bell Burnell transformed astronomy #OTD in 1967 when she made the first observation of a pulsar.

She and advisor Antony Hewish initially dubbed the object LGM-1 (“Little Green Men”) for its regular signal, but soon identified it as a rotating, magnetized neutron star.

#astronomy #pulsars #neutronstars #JocelynBellBurnell

Jocelyn Bell Burnell transformed astronomy #OTD in 1967 when she made the first observation of a pulsar.

She and advisor Antony Hewish initially dubbed the object LGM-1 (“Little Green Men”) for its regular signal, but soon identified it as a rotating, magnetized neutron star.

#astronomy #pulsars #neutronstars #JocelynBellBurnell

Due to their precision, pulsars could act as navigational beacons for interstellar travel.

Because graduate student contributions to discoveries were not recognised at the time, Jocelyn's male PhD supervisor was awarded the Nobel Prize for discovering pulsars in 1974, considered one of the most important astronomical discoveries of the 20th century. (2/2)

#JocelynBellBurnell #pulsars #RadioAstronomy #RadioWaves #RadioTelescope #Cambridge#NobelPrize #Astrophysics #stars #soundbeyondmusic

Due to their precision, pulsars could act as navigational beacons for interstellar travel.

Because graduate student contributions to discoveries were not recognised at the time, Jocelyn's male PhD supervisor was awarded the Nobel Prize for discovering pulsars in 1974, considered one of the most important astronomical discoveries of the 20th century. (2/2)

#JocelynBellBurnell #pulsars #RadioAstronomy #RadioWaves #RadioTelescope #Cambridge#NobelPrize #Astrophysics #stars #soundbeyondmusic

#British #astrophysicist overlooked by Nobels wins $3m award for #pulsar work | #Science | The Guardian

https://www.theguardian.com/science/2018/sep/06/jocelyn-bell-burnell-british-astrophysicist-overlooked-by-nobels-3m-award-pulsars

#Physics #Astrophysics #Pulsars #JocelynBellBurnell #UK