Gravitational-waves searches for black holes with residual eccentricity.

Tiwari S.
  Lunedì 11/09   14:30 - 18:30   Aula A203   III - Astrofisica
Detections of stellar mass binary black-holes (BBHs) systems in the first observing run of LIGO interferometers have started an exciting new era of black-hole astrophysics. Understanding the possible formation channels of the population of BBHs will be important to comprehend the environment in which such systems are formed. Recent detections proved that BBHs exist in Nature and merge within Hubble time, and so there is a strong motivation to search for BBH systems in a larger parameter space, such as BBHs having residual eccentricity till the time of merger (eBBH). Detection or rate upper limits on such sources will extend the understanding of the formation channels and reveal the dynamics of dense stellar environments where such sources are expected to be formed. The search for eBBH sources is conducted using un-modelled methods which are tuned to the expected parameter space of the signal. We present here the methods and results for the searches concerning eBBH and the related astrophysical implications.