New header picture 

Researchers from the independent @maxplanckgesellschaft research group “Binary Merger Observations and Numerical Relativity” have studied how the spins of merging black holes influence the recoil after their merger, and how this in turn influences the remnant spin magnitudes after repeated mergers in dense stellar environments.

The header picture shows some of their results.

 https://www.aei.mpg.de/1244528/towards-a-deeper-understanding-of-black-hole-origins?c=785562

 https://arxiv.org/abs/2503.21278 (The header picture is Fig. 5 in there)

 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

@fasse
I have to say I really love both your #profilePicture and your #headerPicture a lot!!