2008

Identifying Decaying Supermassive Black Hole Binaries from their Variable Electromagnetic Emission

Haiman, Zoltán, Kocsis, Bence, Menou, Kristen et al.

Understand

Supermassive black hole binaries (SMBHBs) with masses in the range 10^4-10^7 M_sun/(1+z), produced in galaxy mergers, are thought to complete their coalescence due to the emission of gravitational waves (GWs).

  • The anticipated detection of the GWs by the LISA will constitute a milestone for fundamental physics and astrophysics.
  • While the GW signatures themselves will provide a treasure trove of information, if the source can be securely identified in electromagnetic (EM) bands, this would open up entirely new scientific opportunities, to probe fundamental physics, astrophysics, and cosmology.
  • We discuss several ideas, involving wide-field telescopes, that may be useful in locating electromagnetic counterparts to SMBHBs detected by LISA.

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