#kilonova — Public Fediverse posts

When neutron stars merge, things get messy

What happens when the densest objects in the universe collide? A neutron star merger is a cosmic forge that creates heavy elements like gold and platinum, but it also unleashes "messy" gravitational waves and gamma-ray bursts that can sterilize nearby solar systems. We look at the violent physics of a kilonova.

#science #Kilonova #Astrophysics #Cosmos #Space #Discovery #GravityWaves #NASA

https://www.thefuturist.co/when-neutron-stars-merge-things-get-messy/

Strategy for Identifying Vera C. #Rubin Observatory #Kilonova Candidates for Targeted #GravitationalWave Searches: https://iopscience.iop.org/article/10.3847/1538-4357/ae244e -> How Many Kilonovae Will Rubin Observatory Help Us Spot? https://aasnova.org/2026/02/04/how-many-kilonovae-will-rubin-observatory-help-us-spot/

Après la supernova, après la kilonova : la superkilonova
https://www.ca-se-passe-la-haut.fr/2025/12/apres-la-supernova-apres-la-kilonova-la.html
#science #astronomie #astrophysique #espace #tech #étoiles #supernova #kilonova #superkilonova #neutrons #fusion #trounoir #ondesgravitationnelles

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!

https://denis-gilbert.ca/fr/2025/04/15/kilonova-fusion-detoiles-a-neutrons-et-ondes-gravitationnelles/

#astronomy #astrophysics #neutronstar #kilonova #GW170817

GOTO065054+593624 - an 8.5 mag amplitude dwarf nova identified in real time via Kilonova Seekers: https://www.aanda.org/articles/aa/full_html/2025/07/aa53823-25/aa53823-25.html -> Public take the lead in discovery of new exploding star: https://warwick.ac.uk/news/pressreleases/public_take_the_lead_in_discovery_of_new_exploding_star.

And last year ... #Kilonova Seekers - the GOTO project for real-time citizen science in time-domain astrophysics: https://academic.oup.com/mnras/article/533/2/2113/7735340?login=false -> A citizen science project has already identified 20 new astronomical discoveries: https://www.port.ac.uk/news-events-and-blogs/news/citizen-science-project-identifies-20-new-astronomical-discoveries

More news coverage – this time from phys.org – of our researchers' recent breakthrough simulation of merging neutron stars.

📄 https://phys.org/news/2025-06-simulation-reveals-emergence-jet-binary.html

#NeutronStars #Relativity #Kilonova #Astrophysics #Astronomy #GRB

Durchbruch bei der Simulation kollidierender Neutronensterne

Die bisher längste konsistente numerisch-relativistische Simulation zeigt Details der Entstehung Schwarzer Löcher und Jets und ist ein wichtiger Schritt für die Multi-Messenger-Astronomie.

ℹ️ https://www.aei.mpg.de/1249399/breakthrough-in-simulating-how-neutron-stars-collide

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

Bild: K. Hayashi / @mpi_grav

#Neutronensterne #Astrophysik #SchwarzesLoch #MultiMessengerAstronomy #Astronomie #Kilonova #Gravitationswellen

💡 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

https://www.earth.com/news/when-two-neutron-stars-collide-kilonova-explosion-very-bad-things-happen/

#science #astronomy #astrophysics #kilonova #neutronstars

First Kilonova Progenitor System Identified

https://noirlab.edu/public/news/noirlab2303/?lang

Astronomers using the SMARTS 1.5-meter Telescope uncover a one-in-ten-billion binary star system

#astronomy #kilonova

Kilonova Discovery Challenges our Understanding of Gamma-Ray Bursts

https://noirlab.edu/public/news/noirlab2228/?lang

International Gemini Observatory probes aftermath of gamma-ray burst and uncovers surprising evidence of colliding neutron stars

#astronomy #kilonova

Nova vs Supernova

#Supernova is the last dying gasp of a star as it goes dark.

A #nova, on the other hand, requires two stars. One star is always a white dwarf, while the other is usually a red giant.

#Hypernovas are supernovas that achieve a certain size and brightness. Usually, they're about 10 or more times brighter than a standard supernova. Another type, an extremely rare #kilonova occurs when two neutron stars collide, releasing an incredible gravitational wave.

#astronomy

#Kilonova Size #Explosions Are Popping Off in Empty #Space - #YouTube #SciComm, #Science by #Astrum

https://www.youtube.com/watch?v=Q-ZIHu8e0hM

A lanthanide-rich #kilonova in the aftermath of a long gamma-ray burst: https://www.nature.com/articles/s41586-023-06979-5.epdf?sharing_token=aGICtfHv79T7vtlvyYXqzdRgN0jAjWel9jnR3ZoTv0O1Frh-i5m3IG3YLVoqsG-mP1eexkSMtGxhhp7qdaMt6w4c2xHS9-QY5HmjpAnLnwEA9gCDn0MGEsD4sbAQm07Mro-lXvXCDBwqt32TJTSCR2INaiPi-ZiP1ZMXXs0ywIB1Ug1zKdCgDitRd0AqzYnb5ZgAuW7kyDzw_EQSRHYUKlGSNe65WNVPmUvIA3LDLu8XrUiUDZAFbTJZACg8Ro6_4cCL-SrcYmIfLfIV44VWEzUU7LL0Tn9VoqHfHbLVEBU%3D&tracking_referrer=www.space.com -> Thread https://twitter.com/ExploreCosmos_/status/1760663648668680247

Une kilonova dans le voisinage du système solaire il y a 4 millions d'années

à lire: https://www.ca-se-passe-la-haut.fr/2024/02/une-kilonova-dans-le-voisinage-du.html
à voir : https://youtu.be/7LfKpmSJb3w

#science #astrophysique #kilonova

Evidence For a Major Kilonova Event Near Earth (3.5 Million Years Ago) - YouTube
https://www.youtube.com/watch?v=Lt2mGPPniec

#Astronomy #Cosmology #Kilonova

JWST Investigation Finds a Few Surprises From a Neutron Star Collision - YouTube
https://www.youtube.com/watch?v=RuD8mqQI6qQ

#Astronomy #Kilonova #JamesWebbTelescope

#JWST Confirms the Formation of #HeavyElements in a #Kilonova

https://www.universetoday.com/163921/jwst-confirms-the-formation-of-heavy-elements-in-a-kilonova/

Mega-Kilonova schuf schwere Elemente. Zweithellster je dokumentierter Gammastrahlenausbruch erzeugte Tellur, Iod, Selen und Wolfram. #Kilonova #Elemente #Neutronensternkollision #Astronomie #JWST #Gammastrahlenausbruch
https://www.scinexx.de/news/kosmos/mega-kilonova-schuf-schwere-elemente/

Collision Between 2 Neutron Stars Could Be Deadly For Life on Earth

Earth will be sterilized by cosmic rays if within 35 light-years of a kilonova. Earth will be sterilized by gamma rays if within 300 light-years AND directly hit by the narrow gamma ray beam

#Kilonova #Radiation

https://www.sciencealert.com/collision-between-2-neutron-stars-could-be-deadly-for-life-on-earth

Colliding Neutron Stars Could Help Measure the Expansion of the Universe

Every time neutron stars collide, astronomers get another opportunity to measure the expansion rate of the Universe. Recent studies have shown that these collisions, kilonovae, are remarkably spherical and could be described by a single temperature, serving as standard candles for measuring cosmological distance. An analysis of the 2017 kilonova explosion found that its distance supports existing measurements for the Universe's expansion rate and could help relieve the "Hubble tension."

#cosmology #kilonova

https://nbi.ku.dk/english/news/news23/colliding-neutron-stars-provide-a-new-way-to-measure-the-expansion-of-the-universe/

Nature Journal astronomy covers

Anatomy of a kilonova (2017) - Aftermath of the merger between two neutron stars, initially observed in the form of the gravitational waves event GW170817.

Art by Aurore Simonnet http://auroresimonnet.com

https://nature.com/nature/volumes/551/issues/7678

#universe #kilonova #neutronstars #stars #gravitationalwaves #ligo #virgo #physics #astronomy #astrophysics #astrodon #nature #cover #art #coverart #covers #naturecovers #space #science #research

A lanthanide-rich #kilonova in the aftermath of a long gamma-ray burst: https://arxiv.org/abs/2308.00638 -> "observations of a luminous red transient with a quasi-thermal spectrum, following an unusual gamma-ray burst of long duration. We classify this thermal emission as a kilonova and track its evolution up to two months after the burst [...] the recession of the photospheric radius and the rapidly-decaying bolometric luminosity [...] support the recombination of lanthanide-rich ejecta as they cool."

Ihr seid herzlich zur Ausstellung »HEAVY-METAL-VERSES« in #Darmstadt eingeladen! Künstlerin und Musikerin Violeta López López vereint Poesie, Musik, Klang, Grafik ... und gibt damit einen ganz neuen Einblick in die Forschung zu #Kilonova von GSI und FAIR ✨💫💥 Alle Infos:
https://www.gsi.de/start/aktuelles/detailseite/2023/07/26/ausstellung-der-artist-in-science-residence-2023 © Violeta López López