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#supernova

2 innlegg2 deltakere0 innlegg i dag
Offentlig
MPI for Gravitational Physics

🚨 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.

📄 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 aei.mpg.de/1188233/digging-dee

Images: snrcat.physics.umanitoba.ca/SN and snrcat.physics.umanitoba.ca/SN

Two images of supernova remnants, the left in blue false color, the right in red false color.
#HeaderPicture#supernova#CasA
Offentlig
MPI for Gravitational Physics

🚨 Neues Header-Bild 🖼️

Es zeigt die beiden Supernova-Überreste Cassiopeia A (links, im Röntgenbereich) und Vela Jr. (recht, im Radiobereich). Beide beherbegen ein „zentrales kompaktes Objekt“, einen Neutronenstern, der mit der Explosionswolke nach der Supernova zurückblieb.

Forschende der dauerhaften unabhängigen @maxplanckgesellschaft Forschungsgruppe „Kontinuierliche Gravitationswellen“ am @mpi_grav in Hannover haben mit dem verteilten Rechenprojekt @einsteinathome nach Gravitationswellen von diesen zentralen kompakten Objekten gesucht.

📄 arxiv.org/abs/2503.09731

Dass sie keine Gravitationswellen gefunden haben, verrät, dass die Neutronensterne nur minimal verformt sein können.

ℹ️ aei.mpg.de/1188233/digging-dee

Bilder: snrcat.physics.umanitoba.ca/SN bzw. snrcat.physics.umanitoba.ca/SN

Zwei Bilder von Supernova-Überresten, das linke in blauer Falschfarbe, das rechte in roter Falschfarbe.
#HeaderBild#Supernova#CasA
Offentlig *
jbz

🔭 What Will the Betelgeuse Supernova Be Like - And Will It Hurt Us?
—@universetoday

｢ It will be visible during the day. It will be brighter than any planet. It will be almost as bright as the full moon. You'll be able to read a book by the light of the Betelgeuse supernova at midnight ｣

universetoday.com/articles/wha

Artist’s conception of a red giant star. Credit: Royal Astronomical Society/ ESO/ L. Calçada.
Universe TodayWhat Will the Betelgeuse Supernova Be Like - And Will It Hurt Us?When Beetlejuice goes off, it's going to be the show of a lifetime. But it’s not going to hurt us.
#Betelgeuse#supernova#astrophysics
Offentlig
CosmicRami

Have this friend who is newish to #astrophotography here in Sydney. He did 40-hour mosaic on the Vela Supernova remnant in h-alpha/[O-III] …. And holy heck it is incomprehensibly magnificent! 🔭

Those are exploded star gutz. At its heart is the Vela pulsar. 📡

Elfie is awesome and you should follow his recent immersion and obviously very good work in astrophotography.

His Instagram is here: instagram.com/elfn8r?igsh=MWV3

Shared with permission.

📸 David Elford

Astro image of a supernova remnant's knots and bubbling clouds of a bright and turbulent nebula.
#Supernova#Vela#Nebula
Offentlig
carstenraddatz

If you too want to know when the long awaited recurrent #supernova explosion of T Coronae Borealis happens, well just wait. You didn't miss it, it hasn't happened yet, however pre-eruption started.

Last outbreaks were May 1866 and February 1946, so 2025 is likely. T CrB has two components: a red giant star in close orbit with a white dwarf. Theoretically accumulated mattercould push past the 1.4 solar mass Chandrasekhar Limit, forcing a Type Ia supernova. I would love to see that! #astronomy

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