Haiman Zoltán (Columbia University)

Merging Black holes

Az előadás kivonata: The LIGO experiment has detected mergers between stellar-mass black holes, and pulsar timing arrays on the ground have discovered stochastic background of gravitational waves attributable to merging massive black hole binaries. The LISA satellites, planned in space in the mid 2030s, are expected to detect gravitational waves (GWs) from individual massive black hole binaries at high signal-to-noise.  These black hole mergers should often take place in gas-rich galactic nuclei, and therefore should also produce concurrent electromagnetic (EM) emission.

In this talk, I will highlight the importance of these black hole mergers for astrophysics, cosmology, and fundamental physics, and emphasize the additional science potential of joint GW and EM detections.  I will then discuss our recent work on the coupled
dynamics of a BH binary with circumbinary gas, including the expected characteristics of the EM emission from such a system, the impact of circumbinary gas on the binary's orbit, and the corresponding imprints on the GW signals.  Finally, I will present BH binary candidates we have identified based on these signatures, and discuss the challenges and future work needed to confirm these binaries and to realize their science potential.

Az előadóról:

• Személyes oldal
• Google Scholar
• Curriculum vitae