Constraints are relative.
Neutron stars,
constrained by gravity
to small size and huge density,
still send out pulses of
light beams as they cool.
Use your emotional gravity
to spin a new light into your world.
#pulsar #neutronstar
#NeutronStar
12:16pm Neutron Star by Ben Allison from The Stars Look Very Different Today
#BenAllison #NeutronStar #Lunchtime #KUVO
The explosive origin of the Crab Nebula.
https://www.youtube.com/watch?v=08eKnR7CfYI
12/x
#Science #Space #Supernova #Nebula #Explosion #NeutronStar #Radiation #Magnetism #Stars #Star
Le 17 août 2017 occupe une place spéciale dans la mémoire des astrophysiciens. En cette journée, les caractéristiques d'un événement d'ondes gravitationnelles (GW170817) suggèrent la première détection d'une fusion d'étoiles à neutrons. Un branle-bas de combat digne des meilleurs films d'action allait ensuite animer 70 équipes d'astrophysiciens pendant deux mois!
Une étoile à neutrons crée un vent cosmique inattendu, bouleversant nos idées sur les trous noirs. https://www.science-et-vie.com/ciel-et-espace/cette-etoile-a-neutrons-genere-un-vent-cosmique-qui-bouleverse-nos-connaissances-sur-les-trous-noirs-212456.html #Astrophysics #Science #Space #NeutronStar #TrousNoirs
Evidence for a brief appearance of gamma-ray periodicity after a compact star merger: https://arxiv.org/abs/2509.15824 -> HKU Researcher and Collaborators Detect First “Heartbeat” of a Newborn #NeutronStar in Distant Cosmic Explosion: https://www.hku.hk/press/press-releases/detail/28601.html
XRISM Observes Surprising Differences in Cosmic Winds Between Neutron Stars and Black Holes
The X-Ray Imaging and Spectroscopy Mission (XRISM) has made a groundbreaking discovery that challenges our understanding of cosmic winds. While studying the neutron star GX13+1, XRISM found that the wind produced by the neutron star's accretion disc was significantly different from those emitted by ... [More info]
✨ Neutron stars are tiny in size yet colossal in mass.
💥 Born from supernovae, they pack more than the Sun’s mass into a sphere only miles across.
🥄 A single teaspoon of their matter would weigh billions of tonnes, more than an entire mountain range.
🔭 From pulsars to the Crab Nebula, explore the densest matter in the universe.
📝 Explore more: https://TPC8.short.gy/wOp6zU4f
Journey into the cosmos.
#Astronomy #Astrophysics #NeutronStar #Pulsar #CrabNebula #ScienceCommunication #Space #TPC8
PHYS 1311 - Elements of Astronomy - Lecture Day 8
#TachyonBeam #astronomy #NeutronStar #pulsar #Calvera
An article published in the journal "Astronomy & Astrophysics" describes a candidate supernova remnant that was associated with the pulsar nicknamed Calvera. A team of researchers led by Emanuele Greco conducted observations and analyses of a decidedly unusual pair, as finding it approximately 6,500 light-years above the Milky Way's galactic plane was surprising.
An Impossible Thought Experiment:
"Design a spaceship that carries Humans to a Neutron Star. Land on its surface safely. Drill through it to reach its core and come back safely to Earth. This is a reply to those people who literally say "Nothing is Impossible". Even a Type-VII Alien Civilization can never do it".
#Mastodon #science #knowledge #physics #cosmos #space #astronomy #scicomm #writing #NeutronStar #star #thoughtExperiment #imagination #opinion #quote #insights #fediverse #astronomy
THE EXPERT EDGE BY ZPONZ: Expert in Neutron star
Professor Frank's research is in the general area of theoretical astrophysics, and in particular the hydrodynamic and magneto-hydrodynamic evolution of matter ejected from stars. His scientific studies are funded by the National Science Foundation, NASA and the Department of Education
#ZPONZ #GetPaidForExpertise #MonetizeYourSkills #Neutronstar
Atoms As Big As Mountains — Neutron Stars Explained
In 1933, Walter Baade and Fritz Zwicky described a neutron star and how it forms. #Poetry #Science #History #Astrophysics #NeutronStar #Baade #Zwicky (https://sharpgiving.com/thebookofscience/items/p1933c.html)
Black Hole Consumes Magnetized Neutron Star
"The spiraling shape will make you go insane
Everyone wants to see that groovy thing..." (#TMBG)
https://youtube.com/watch?v=684Ie6uONus&si=ky25JLGXnS-0cU5S
#science #BlackHole #NeutronStar #astronomy #research #collision
🎉 Happy belated birthday, GW230529!
Two years and a few days ago, the @LIGO Livingston gravitational-wave detector observed a remarkable gravitational-wave signal.
ℹ️ https://www.aei.mpg.de/1138125/mysterious-object-in-the-gap
Detected soon after the beginning of the fourth joint observing run of the LIGO-Virgo-KAGRA collaborations, the signal came from the merger of a compact object with 1.3 to 2.1 times the mass of our Sun with another compact object with 2.6 to 4.7 times the solar mass.
Astronomers believe that the lighter object is a neutron star and the heavier is a lightweight black hole.
How that lightweight black hole formed is unknown. Its masse falls into the “lower mass gap” between the heaviest neutron stars and the lightest black holes.
📄 https://iopscience.iop.org/article/10.3847/2041-8213/ad5beb
Image: I. Markin (@unipotsdam), T. Dietrich (@unipotsdam and @mpi_grav) H. Pfeiffer, A. Buonanno (@mpi_grav)
#GW230529 #GravitationalWaves #MassGap #BlackHole #NeutronStar #Astronomy
💡 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
Weekly Update from the Open Journal of Astrophysics – 31/05/2025
Once again it’s time for the weekly Saturday morning update of papers published at the Open Journal of Astrophysics. Since the last update we have published five new papers, which brings the number in Volume 8 (2025) up to 67; the total so far published by OJAp has passed the 300 mark and is now up to 302. If we keep up at the same rate for the rest of the year as we did for the first five months now completed, we will publish around 160 papers altogether in 2025.
In chronological order of publication, the five papers published this week, with their overlays, are as follows. You can click on the images of the overlays to make them larger should you wish to do so.
The first paper to report is “Which is the most eccentric binary known? Insights from the 2023/4 pericenter passages of Zeta Boötis and Eta Ophiuchi” by Idel Waisberg, Ygal Klein and Boaz Katz (Weizmann Institute of Science, Israel). This is a report of interferometric observations of two very eccentric binary star systems, published on Tuesday 27th May 2025 in the folder Solar and Stellar Astrophysics. The overlay is here:
You can read the final accepted version on arXiv here.
The second paper to report is “On the full non-Gaussian Surprise statistic and the cosmological concordance between DESI, SDSS and Pantheon+” by Pedro Riba Mello & Miguel Quartin (Universidade Federal do Rio de Janeiro, Brazil), and Bjoern Malte Schaefer & Benedikt Schosser (Heidelberg, Germany). This paper is in the folder Cosmology and NonGalactic Astrophysics and was published on Tuesday 27th May 2025. The paper presents an application of the “Surprise Statistic”, based on the Kullback-Leibler divergence, as a measure of the difference between results inferred from different data sets.
The overlay is here:
You can find the officially-accepted version of the paper on arXiv here.
The third paper we published last week, and our 300th overall, is “Cosmic Ray Feedback in Massive Halos: Implications for the Distribution of Baryons” by Eliot Quataert (Princeton, USA) and Philip F. Hopkins (Caltech, USA). This was published on Thursday 29th May in the folder Cosmology and NonGalactic Astrophysics. The paper discusses the effects of cosmic rays produced by massive black holes on the structure of the baryonic component of galaxies and how these might affect cosmological parameter estimation. The overlay is here:
You can read the officially accepted version of this paper on arXiv here.
The next one to report is “Mixing neutron star material into the jets in the common envelope jets supernova r-process scenario” by Noam Soker (Technion, Israel). This was published on Thursday 27th May in the folder High-Energy Astrophysical Phenomena; it presents a discussion of the chemical enrichment of an evolved star consequent upon its ingestion of a neutron star.
The overlay is here:
You can find the officially accepted version on arXiv here.
Last, but by no means least, for this week we have “Dark Energy Survey Year 6 Results: Synthetic-source Injection Across the Full Survey Using Balrog” by Dhayaa Anbajagane (Kavli Institute, Chicago) et al. (81 authors) on behalf of the Dark Energy Survey Collaboration. It was also published on Thursday 27th May 2025, but in the folder Cosmology and NonGalactic Astrophysics. It is about testing the Dark Energy Survey analysis pipeline using synthetic sources.
The overlay is here:
You can find the officially accepted version on arXiv here.
That’s all the papers for this week. I’ll post another update next weekend.
#arXiv240808385v2 #arXiv250105683v3 #arXiv250201753v2 #arXiv250202411v2 #arXiv250417858v2 #binaryStars #CosmologyAndNonGalacticAstrophysics #DarkEnergySurvey #DiamondOpenAccess #DiamondOpenAccessPublishing #HighEnergyAstrophysicalPhenomena #neutronStar #OpenJournalOfAstrophysics #rProcess #SolarAndStellarAstrophysics #TheOpenJournalOfAstrophysics
Today’s bite-sized space fact:
Neutron stars — the ultra-dense remnants of massive stars — can spin up to 700 times per second. That’s faster than a kitchen blender! 🤯
Mind = Blown.
#Astronomy #NeutronStar #SpaceFact #Science #Astrophysics #SpaceNews #Stargazing
🚨 New header picture 🖼️
It shows the two supernova remnants Cassiopeia A (left, in X-rays) and Vela Jr. (right, at radio wavelengths). Both harbor a “central compact object”, a neutron star left behind together with the debris cloud after the supernova.
Researchers from the permanent independent @maxplanckgesellschaft research group “Continuous Gravitational Waves” at @mpi_grav in Hanover, Germany, have been searching for gravitational waves from these central compact objects using the volunteer distributed computing project @einsteinathome.
📄 https://arxiv.org/abs/2503.09731
The fact that they did not find any gravitational waves indicates that the neutron stars can only be minimally deformed.
ℹ️ https://www.aei.mpg.de/1188233/digging-deeper-with-einstein-home?c=26149
Images: http://snrcat.physics.umanitoba.ca/SNRrecord.php?id=G111.7m02.1 and http://snrcat.physics.umanitoba.ca/SNRrecord.php?id=G266.2m01.2
#HeaderPicture #supernova #CasA #VelaJr #astrodon #astronomy #NeutronStar
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