Results 51 to 60 of about 168,088 (243)

A supermassive black hole awakes [PDF]

open access: yesScience, 2017
Active Galaxies Every large galaxy hosts a supermassive black hole at its center, which grows by consuming passing gas or stars. Most are quiescent, but when the black hole is feeding, an accretion disk forms, causing the galaxy nucleus to shine brightly as a quasar. Gezari et al.
openaire   +2 more sources

The spin of supermassive black holes [PDF]

open access: yesClassical and Quantum Gravity, 2013
Invited article accepted for publication in the focus issue on astrophysical black holes in Classical and Quantum Gravity, guest editors: D. Merritt and L. Rezzolla.
openaire   +2 more sources

Partial Stellar Disruption by a Supermassive Black Hole: Is the Light Curve Really Proportional to t−9/4? [PDF]

open access: yesAstrophysical Journal, 2019
The tidal disruption of a star by a supermassive black hole, and the subsequent accretion of the disrupted debris by that black hole, offers a direct means to study the inner regions of otherwise-quiescent galaxies.
E. Coughlin, C. Nixon
semanticscholar   +1 more source

High-energy signatures of binary systems of supermassive black holes [PDF]

open access: yes, 2016
Context. Binary systems of supermassive black holes are expected to be strong sources of long gravitational waves prior to merging. These systems are good candidates to be observed with forthcoming space-borne detectors.
Pérez, Daniela   +2 more
core   +3 more sources

Detecting Supermassive Black Hole–induced Binary Eccentricity Oscillations with LISA [PDF]

open access: yesAstrophysical Journal, 2019
Stellar-mass black hole binaries (BHBs) near supermassive black holes (SMBH) in galactic nuclei undergo eccentricity oscillations due to gravitational perturbations from the SMBH.
Bao-Minh Hoang   +4 more
semanticscholar   +1 more source

Black Hole Spin Properties of 130 AGN [PDF]

open access: yes, 2013
Supermassive black holes may be described by their mass and spin. When supermassive black holes are active, the activity provides a probe of the state of the black hole system.
Daly, Ruth A., Sprinkle, Trevor B.
core   +1 more source

Formation of supermassive black holes [PDF]

open access: yesThe Astronomy and Astrophysics Review, 2010
To appear in The Astronomy and Astrophysics Review.
openaire   +2 more sources

Impact of supermassive black hole growth on star formation [PDF]

open access: yesNature Astronomy, 2017
Supermassive black holes are found at the centres of massive galaxies. During the growth of these black holes they light up to become visible as active galactic nuclei (AGNs) and release extraordinary amounts of energy across the electromagnetic spectrum.
C. Harrison, C. Harrison
semanticscholar   +1 more source

Precessing jet nozzle connecting to a spinning black hole in M87 [PDF]

open access: yesNature, 2023
This study analyses radio observations of the jet in galaxy M87, from which the existence of a spinning black hole that induces Lense–Thirring precession of a misaligned accretion disk is inferred.
Yuzhu Cui   +78 more
semanticscholar   +1 more source

Extreme Mass Ratio Binary: Radiation reaction and gravitational waveform [PDF]

open access: yes, 2005
For a successful detection of gravitational waves by LISA, it is essential to construct theoretical waveforms in a reliable manner. We discuss gravitational waves from an extreme mass ratio binary system which is expected to be a promising target of the ...
Barack L   +8 more
core   +2 more sources

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