PIRSA:20100010

GW190521 - Discovery of Black Holes that Should Not Exist

APA

Jani, K. (2020). GW190521 - Discovery of Black Holes that Should Not Exist. Perimeter Institute. https://pirsa.org/20100010

MLA

Jani, Karan. GW190521 - Discovery of Black Holes that Should Not Exist. Perimeter Institute, Oct. 27, 2020, https://pirsa.org/20100010

BibTex

          @misc{ pirsa_20100010,
            doi = {},
            url = {https://pirsa.org/20100010},
            author = {Jani, Karan},
            keywords = {Cosmology},
            language = {en},
            title = {GW190521 - Discovery of Black Holes that Should Not Exist},
            publisher = {Perimeter Institute},
            year = {2020},
            month = {oct},
            note = {PIRSA:20100010 see, \url{https://pirsa.org}}
          }
          

Abstract

The new gravitational-wave signal GW190521in LIGO and Virgo marks the first observational detection of the elusive intermediate-mass black holes. The detection also confirms there exist a new class of black holes in the mass gap predicted by the pair-instability supernovae theory. In this talk, I will discuss the process that went behind inferring the astrophysical properties of this historic discovery. I would briefly address the alternative scenarios we looked into for a possible exotic origin of this signal, including any violation of General Relativity. For the upcoming ESA/NASA space mission LISA, I would highlight how this discovery opens a unique epoch of multi-band, multi-messenger astronomy.