was ist jetzt mit t coronae borealis?
*gespannt_wart*
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#Astrodon
37 posts30 participants4 posts today
We are now on a commissioning break. We should be back 4 June. We ask the Universe to not do anything interest while we're not observing.
More details on our observing plans are found on https://observing.docs.ligo.org/plan/
observing.docs.ligo.orgIGWN | Observing Plans
When massive stars die, they go out with a bang 
These are known as supernova explosions, and what remains are breathtaking structures like the ones you'll discover in the video below 
Sterrenkundigen ontdekken eindelijk dubbele witte dwerg die gaat ontploffen tot supernova.
This is the globular cluster M3 in the constellation Canes Venatici. About eight hours of it.
#space #astronomy #astrodon
02/04/2025 - Evening walk up Tap o' Noth in Aberdeenshire. We took the scope and spent 4hrs on top, just sitting, having a brew and chatting to the stars. It was chilly but we hid behind the ramparts so it was OK (there's a Pictish hillfort on top). Aurora, stars, galaxies and nebula on a dark night, it was all pretty magic.
The moon with Jupiter tonight. I purposely used a long exposure for the moon so you could see that hint of Earthshine.
#space #astronomy #astrodon
Part of tonight's moon. Enjoyed seeing Janssen (large crater just above center), and Vallis Rheita. Also cool to get a view of Mare Australe (mare in the far south east).
I hadn't looked at the sun for a while (figuratively speaking--never look at the sun) because it's been so quiet. Today it's not so quiet. We're still in solar maximum for quite some time.
#space #astronomy #astrodon
New selected research highlight
Towards a deeper understanding of black hole origins
Research team studies the impact of remnant kicks on spin distributions of black holes from hierarchical mergers
A new study revisits modelling of the spin distributions from hierarchical binary black hole mergers in dense stellar environments, such as globular clusters. It finds clear deviations from the unique spin distribution described in previous studies, and shows a way to identify black holes from repeated mergers, which could help shed light on black hole formation through precise spin measurements in future observing runs.
Read more 
https://www.aei.mpg.de/1244528/towards-a-deeper-understanding-of-black-hole-origins?c=26149
I took this back on the 10th of March.
It is our old friend the Eta Carinae Nebula.
This time with a SII/OIII filter (thanks for the suggestion, @malcircuit !) and 120x90s@80 for the exposures. Then I ran it through the Dwarflab star removal tool, and post-processed the result in Snapseed.
I was not going to post it, but it came up as a background on my office screen today (long story), and I had not realised just how much detail it had.
Replied in thread
@NanoBookReview @badastro That hotspot on Makemake could be the signature of an Alien observation post whose mission it is to detect and report back when the life seeded on planet #3 is ready for harvesting. *Microwave oven DING sound*
A quick snapshot of the moon at sunset tonight with my "day camera" (Nikon P1000). I wanted to get a proper image of it with the Pleiades, but these fast-moving bands of showers are still blowing through, and I don't dare uncover the equipment.
#space #astronomy #astrodon
Since I'm seeking #Pleiades content as I scroll today -- we did an #astronomy & #mythology #podcast episode on the Pleiades last season!
You can check it out here if you want to learn more about this star cluster / nymph sisters: https://starrytimepodcast.podbean.com/e/asterism-the-pleiades-in-astronomy-and-mythology/
Attention #science communicators! There are still a few days to apply for a cool #scicomm #job at the ESO Supernova Planetarium here in Garching bei #Munchen.
If you're passionate about getting audiences of all ages excited about #astronomy and you're fluent in both English and German, apply here: https://recruitment.eso.org/jobs/2025_0019
ESO/P. Horálek
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.
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
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.
https://arxiv.org/abs/2503.09731
Dass sie keine Gravitationswellen gefunden haben, verrät, dass die Neutronensterne nur minimal verformt sein können.
https://www.aei.mpg.de/1188233/digging-deeper-with-einstein-home?c=26149
Bilder: http://snrcat.physics.umanitoba.ca/SNRrecord.php?id=G111.7m02.1 bzw. http://snrcat.physics.umanitoba.ca/SNRrecord.php?id=G266.2m01.2
