PIRSA:17110010

Using LISA-like Gravitational Wave Detectors to Search for Primordial Black Holes

Zhao, Y. (2017). Using LISA-like Gravitational Wave Detectors to Search for Primordial Black Holes. Perimeter Institute. https://pirsa.org/17110010

Zhao, Yue. Using LISA-like Gravitational Wave Detectors to Search for Primordial Black Holes. Perimeter Institute, Nov. 28, 2017, https://pirsa.org/17110010 

          @misc{ pirsa_PIRSA:17110010,
            doi = {10.48660/17110010},
            url = {https://pirsa.org/17110010},
            author = {Zhao, Yue},
            keywords = {Particle Physics},
            language = {en},
            title = {Using LISA-like Gravitational Wave Detectors to Search for Primordial Black Holes},
            publisher = {Perimeter Institute},
            year = {2017},
            month = {nov},
            note = {PIRSA:17110010 see, \url{https://pirsa.org}}
          }

Yue Zhao

University of Michigan–Ann Arbor

Talk number
PIRSA:17110010
Collection
Talk Type
Subject
Abstract

Primordial black hole (PBH), which can be naturally produced in the early universe, remains a promising dark matter candidate . It can merge with a supermassive black hole (SMBH) in the center of a galaxy and generate gravitational wave (GW) signals in the favored frequency region of LISA-like experiments. In this work, we initiate the study on the event rate calculation for such extreme mass ratio inspirals (EMRI). Including the sensitivities of various proposed GW detectors, we find that such experiments offer a novel and outstanding tool to test the scenario where PBH constitutes (fraction of) dark matter. The PBH energy density fraction of DM (fPBH) could potentially be explored as small as 10^−3∼10^−4. Further, LISA has the capability to search for PBH mass upto 10^−2∼10^−1 solar mass. Other proposed GW experiments can probe lower PBH mass regime.