Astrophysics with the laser interferometer space antenna

P Amaro-Seoane, J Andrews, M Arca Sedda… - Living Reviews in …, 2023‏ - Springer
Abstract The Laser Interferometer Space Antenna (LISA) will be a transformative experiment
for gravitational wave astronomy, and, as such, it will offer unique opportunities to address …

The quest for dual and binary supermassive black holes: A multi-messenger view

A De Rosa, C Vignali, T Bogdanović, PR Capelo… - New Astronomy …, 2019‏ - Elsevier
The quest for binary and dual supermassive black holes (SMBHs) at the dawn of the multi-
messenger era is compelling. Detecting dual active galactic nuclei (AGN)–active SMBHs at …

[HTML][HTML] The NANOGrav 15 yr data set: Constraints on supermassive black hole binaries from the gravitational-wave background

G Agazie, A Anumarlapudi, AM Archibald… - The Astrophysical …, 2023‏ - iopscience.iop.org
The NANOGrav 15 yr data set shows evidence for the presence of a low-frequency
gravitational-wave background (GWB). While many physical processes can source such low …

Electromagnetic counterparts to massive black-hole mergers

T Bogdanović, MC Miller, L Blecha - Living Reviews in Relativity, 2022‏ - Springer
The next two decades are expected to open the door to the first coincident detections of
electromagnetic (EM) and gravitational-wave (GW) signatures associated with massive …

Changing-look quasar candidates: First results from follow-up spectroscopy of highly optically variable quasars

CL MacLeod, PJ Green, SF Anderson… - The Astrophysical …, 2019‏ - iopscience.iop.org
Active galactic nuclei (AGNs) that show strong rest-frame optical/UV variability in their blue
continuum and broad line emission are classified as changing-look AGN, or at higher …

Varstrometry for off-nucleus and dual subkiloparsec AGN (VODKA): Hubble Space Telescope discovers double quasars

YC Chen, HC Hwang, Y Shen, X Liu… - The Astrophysical …, 2022‏ - iopscience.iop.org
Dual supermassive black holes (SMBHs) at∼ kiloparsec scales are the progenitor
population of SMBH mergers and play an important role in understanding the pairing and …

The Combined Effects of Two-body Relaxation Processes and the Eccentric Kozai–Lidov Mechanism on the Extreme-mass-ratio Inspirals Rate

S Naoz, SC Rose, E Michaely, D Melchor… - The Astrophysical …, 2022‏ - iopscience.iop.org
Gravitational wave (GW) emissions from extreme-mass-ratio inspirals (EMRIs) are promising
sources for low-frequency GW detectors. They result from a compact object, such as a stellar …

Multimessenger time-domain signatures of supermassive black hole binaries

M Charisi, SR Taylor, J Runnoe… - Monthly Notices of …, 2022‏ - academic.oup.com
Supermassive black hole binaries (SMBHBs) are a natural outcome of galaxy mergers and
should form frequently in galactic nuclei. Sub-parsec binaries can be identified from their …

Supermassive black hole binary candidates from the pan-STARRS1 medium deep survey

T Liu, S Gezari, M Ayers, W Burgett… - The Astrophysical …, 2019‏ - iopscience.iop.org
We present a systematic search for periodically varying quasar and supermassive black
hole binary (SMBHB) candidates in the Pan-STARRS1 Medium Deep Survey (MDS) …

Constraining a companion of the galactic center black hole Sgr A

CM Will, S Naoz, A Hees, A Tucker… - The Astrophysical …, 2023‏ - iopscience.iop.org
We use 23 yr of astrometric and radial velocity data on the orbit of the star S0-2 to constrain
a hypothetical intermediate-mass black hole orbiting the massive black hole Sgr A* at the …