Asteroid-mass primordial black holes (PBHs) can explain the observed dark matter abundance while being consistent with the current indirect detection constraints. These PBHs can produce gamma-ray signals from Hawking radiation that are within the sensitivity of future measurements by the AMEGO and e-ASTROGAM experiments. PBHs which give rise to such observable gamma-ray signals have a cosmic origin from large primordial curvature fluctuations. There must then be a companion, stochastic gravitational wave (GW) background produced by the same curvature fluctuations. We demonstrate that the resulting GW signals will be well within the sensitivity of future detectors such as LISA, DECIGO, BBO, and the Einstein Telescope. The multimessenger signal from the observed gamma-rays and GWs will allow a precise measurement of the primordial curvature perturbation that produces the PBH. Indeed, so we argue that the resulting correlation between the two types of observations can provide a smoking-gun signal of PBHs.
Agashe, Kaustubh, et al. "Correlating gravitational wave and gamma-ray signals from primordial black holes." Physical Review. D., vol. 105, no. 12, Jun. 2022. https://doi.org/10.1103/physrevd.105.123009
Agashe, Kaustubh, Chang, Jae Hyeok, Clark, Steven J., et al., "Correlating gravitational wave and gamma-ray signals from primordial black holes," Physical Review. D. 105, no. 12 (2022), https://doi.org/10.1103/physrevd.105.123009
@article{osti_1980116,
author = {Agashe, Kaustubh and Chang, Jae Hyeok and Clark, Steven J. and Dutta, Bhaskar and Tsai, Yuhsin and Xu, Tao},
title = {Correlating gravitational wave and gamma-ray signals from primordial black holes},
annote = {Asteroid-mass primordial black holes (PBHs) can explain the observed dark matter abundance while being consistent with the current indirect detection constraints. These PBHs can produce gamma-ray signals from Hawking radiation that are within the sensitivity of future measurements by the AMEGO and e-ASTROGAM experiments. PBHs which give rise to such observable gamma-ray signals have a cosmic origin from large primordial curvature fluctuations. There must then be a companion, stochastic gravitational wave (GW) background produced by the same curvature fluctuations. We demonstrate that the resulting GW signals will be well within the sensitivity of future detectors such as LISA, DECIGO, BBO, and the Einstein Telescope. The multimessenger signal from the observed gamma-rays and GWs will allow a precise measurement of the primordial curvature perturbation that produces the PBH. Indeed, so we argue that the resulting correlation between the two types of observations can provide a smoking-gun signal of PBHs.},
doi = {10.1103/physrevd.105.123009},
url = {https://www.osti.gov/biblio/1980116},
journal = {Physical Review. D.},
issn = {ISSN 2470-0010},
number = {12},
volume = {105},
place = {United States},
publisher = {American Physical Society (APS)},
year = {2022},
month = {06}}
Texas A & M University, College Station, TX (United States)
Sponsoring Organization:
Israel Science Foundation; Johns Hopkins University; Maryland Center for Fundamental Physics; National Science Foundation (NSF); USDOE Office of Science (SC)
Grant/Contract Number:
SC0010813
OSTI ID:
1980116
Journal Information:
Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 12 Vol. 105; ISSN 2470-0010
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 551, Issue 2-3https://doi.org/10.1016/j.nima.2005.05.068