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Constraining the local burst rate density of primordial black holes with HAWC.
ALBERT, A.; MARTÍNEZ-HUERTA, Humberto.
Abstract: Primordial Black Holes (PBHs) may have been created by density fluctuations in the early Universe and could be as massive as > 10 9 solar masses or as small as the Planck mass. It has been postulated that a black hole has a temperature inversely-proportional to its mass and will thermally emit all species of fundamental particles via Hawking Radiation. PBHs with initial masses of ~ 5 × 10 14 g (approximately one gigaton) should be expiring today with bursts of high-energy gamma radiation in the GeV-TeV energy range. The High Altitude Water Cherenkov (HAWC) Observatory is sensitive to gamma rays with energies of ~300 GeV to past 100 TeV, which corresponds to the high end of the PBH burst spectrum. With its large instantaneous field-of-view of ~ 2 sr and a duty cycle over 95%, the HAWC Observatory is well suited to perform an all-sky search for PBH bursts. We conducted a search using 959 days of HAWC data and exclude the local PBH burst rate density above 3400 pc-3 yr-1 at 99% confidence, the strongest limit on the local PBH burst rate density from any existing electromagnetic measurement.
Journal of Cosmology and Astroparticle Physics
v. 2020, p. 026-1-026-13 - Ano: 2020
Fator de Impacto: 5,524
    @article={002997233,author = {ALBERT, A.; MARTÍNEZ-HUERTA, Humberto.},title={Constraining the local burst rate density of primordial black holes with HAWC},journal={Journal of Cosmology and Astroparticle Physics},note={v. 2020, p. 026-1-026-13},year={2020}}