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Title: DOUBLE TIDAL DISRUPTIONS IN GALACTIC NUCLEI

A star on a nearly radial trajectory approaching a massive black hole (MBH) gets tidally disrupted if it comes sufficiently close to the MBH. Here we explore what happens to binary stars whose centers of mass approach the MBH on nearly radial orbits. The interaction with the MBH often leads to both stars being disrupted in sequence. We argue that such events could produce light curves that are substantially different from those of the single disruptions, with possible features such as two local maxima. Tidal forces from the MBH can also lead the binary components to collide; these merger products can form highly magnetized stars, whose subsequent tidal disruption may enable prompt jet formation.
Authors:
 [1] ;  [2]
  1. School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT (United Kingdom)
  2. Monash Center for Astrophysics and School of Physics, Monash University, Clayton, VIC 3800 (Australia)
Publication Date:
OSTI Identifier:
22518974
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 805; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BINARY STARS; BLACK HOLES; DIAGRAMS; GALAXIES; GALAXY NUCLEI; JETS; MAGNETIC STARS; MASS; ORBITS; TRAJECTORIES; VISIBLE RADIATION