Lmst

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

Dubbele kosmische explosie geeft geboorte aan ongekende ‘superkilonova’
In een bizarre wending bracht een supernova twee neutronensterren voort die samensmolten tot een krachtige kilonova.
#AT2025ulz #kilonova #LIGO #superkilonova #supernova #zwaartekrachtgolf
https://www.kuuke.nl/dubbele-kosmische-explosie-geeft-geboorte-aan-ongekende-superkilonova/

Artist impressie van een supernova (links), die in de nasleep twee neutronensterren voortbrengt (midden).

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

Numerical-relativity simulation of a neutron star merger at 1.3 seconds after the merger. A dense cloud of matter surrounds a black hole which produces a powerful jet. An inset shows the direct surroundings of the black hole.

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

Standbild aus der numerischen Simulation rund 1,3 Sekunden nach der Neutronensternverschmelzung. Sie zeigt die Dichte der Materie rund um das zentrale zurückgebliebene Schwarze Loch, die Magnetfeldlinien und den Jet.

💡 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

Still image from the numerical simulation at around 1.3 seconds after the neutron star merger. It shows the density of the matter around the central remnant black hole, as well as the magnetic field lines and the jet.

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

#science #astronomy #astrophysics #kilonova #neutronstars

Non solo esplosioni di supernove. Scoperto un nuovo tipo di esplosione stellare, la millinova è cento volte più luminosa del Sole. Si allunga la lista delle esplosioni stellari: dopo le più celebri nova, supernova e kilonova, ora arriva anche la millinova, una nuova tipologia cento volte più luminosa del Sole ma circa mille volte meno di una classica nova.

#esplosionistellari #kilonova #millinovae #NubediMagellano #stellazombie #supernova

https://scienzamagia.eu/scienza-tecnologia/non-solo-esplosioni-di-supernove/

immagine creata IA esplosione di una millinovae

Verschmelzen zwei Neutronensterne, wird Energie in Form einer Kilonova sichtbar. Forschende konnten nun zum ersten Mal das seltsam kugelsymmetrische Lichtsignal nachvollziehen.#Neutronensterne #Kilonova #AT2017gfo #Simulation #Astronomie
Kilonova in 3-D

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

Avaruusasema parantaa levy levyltä.

#rajatapauksia #avaruusasema #etelakarjala #imatra #cd #musajutut #kilonova

https://rajatapauksia.wordpress.com/2024/03/09/avaruusasema-kilonova/

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

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

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

#science #astrophysique #kilonova

Wat is een kilonova?

Een kilonova is een heldere explosie van elektromagnetische straling die optreedt wanneer twee neutronensterren of een neutronenster en een zwart gat met stellaire massa botsen en samensmelten.

https://www.kuuke.nl/wat-is-een-kilonova/

#ElektromagnetischeStraling #kilonova #neutronensterren #StellaireZwarteGaten