Detection of a low frequency quasi-periodic oscillation in the soft state of Cygnus X-1 with Insight-HXMT

27. 08 2021

Gravitational waves

New device might be able to detect high-frequency gravitational waves, test run showed 2 candidate events

Newly developed detector uses quartz crystal and superconducting quantum device to catch very high frequency acoustic waves. Its creators believe it could be used to track gravitational vawes, but different than those observed with current technology at LIGO and Virgo detectors.

23. 08 2021

Black holes

Follow-up observations of black hole that destroyed star show variability in its X-ray spectrum

Tidal disruption event known as Swift J1644+57 is a peculiar one - it is unussualy bright and variable in X-rays. New obesrvations with XMM-Newton and Swift telescopes now detail its behavior. Also Scientists were able to put limits in mass of the black hole to 0.6-7.9 millions of solar masses.

22. 08 2021

Black holes

Radio source J2102+6015 is an active galactic nucleus with 3 300 light years across

20. 08 2021

Neutrinos

Blazar TXS 0506+056, the only known source of high energy neutrinos, shows clear sign of variability, but is quiet in high energies

Long term observations of blazar TXS 0506+056 show no detections in very high energy (VHE) gamma rays. However the source displays clear variability in other parts of the electromagnetic spectrum (gamma, x-ray, optical).