Researchers look for high-energy light from gravitational-wave candidates in LIGO-Virgo-KAGRA Observation Runs with India’s AstroSat-CZTI

A new study identifies a unique signature for detecting magnetic black holes and places a strict upper limit on their number.

IISc researchers observed the black hole X-ray binary IGR J17091–3624 and studied the variations in its flickers to study whether they were truly random or just chaotic.

^{Snapshot of simulation showing two black holes colliding with each other. [Image Credits: Wikimedia Commons]}

Astronomers detect gravitational waves from the merging of neutron stars and black holes, but no electromagnetic waves.

Researchers investigate the effects of dark matter particles on the growth of black hole shadows. 

Scientists from Raman Research Institute (RRI)and Hans Raj College, University of Delhi were monitoring the orbital period of the star MXB - 1658-298, a binary system, when they made an unexpected discovery - A massive planet, around 20-25 times the mass of Jupiter, orbiting the twin stars. They developed a novel technique of looking at the X-ray eclipses as one star passed in front of the other to deduce the presence of the third body and its mass. The star already an interesting candidate for future studies due to its extreme distance and age, has become even more intriguing after the discovery of the circumbinary planet around it.