The Square Kilometre Array (SKA) is a planned large radio interferometer designed to
operate over a wide range of frequencies, and with an order of magnitude greater sensitivity …

Tidal disruption events (TDEs) are among the brightest transients in the optical, ultraviolet,
and X-ray sky. These flares are set into motion when a star is torn apart by the tidal field of a …

Despite solid theoretical and observational grounds for the pairing of supermassive black
holes (SMBHs) after galaxy mergers, definitive evidence for the existence of close (sub …

Are the stellar-mass merging binary black holes, recently detected by their gravitational
wave signal, of stellar or primordial origin? Answering this question will have profound …

The gravitational waves (GWs) from a binary black hole (BBH) with masses 10 4≲ M≲ 10 7
M⊙ can be detected with the Laser Interferometer Space Antenna (LISA) once their orbital …

We investigate the pre-disruption gravitational dynamics and post-disruption hydrodynamics
of the tidal disruption of stars by supermassive black hole (SMBH) binaries. We focus on …

Optical transient surveys have led to the discovery of dozens of stellar tidal disruption events
(TDEs) by massive black hole in the centers of galaxies. Despite extensive searches, X-ray …

We study the nature of the changing-look active galactic nucleus NGC 1566 during its 2018
June outburst. During the outburst, the X-ray intensity of the source rises up to∼ 25–30 …

An otherwise dormant supermassive black hole (SMBH) in a galactic nucleus flares up when
it tidally disrupts a star passing by. Most of the tidal disruption events (TDEs) and candidates …

The merger of stellar-mass black holes (BHs) is not expected to generate detectable
electromagnetic (EM) emission. However, the gravitational wave (GW) events GW150914 …