Bulletin of the American Physical Society
APS April Meeting 2023
Volume 68, Number 6
Minneapolis, Minnesota (Apr 15-18)
Virtual (Apr 24-26); Time Zone: Central Time
Session P01: Poster Session II (2:00pm-4:00pm CDT)
2:00 PM,
Monday, April 17, 2023
Room: Orchestra A - D - 2nd Floor
Abstract: P01.00003 : Improving dark matter decay sensitivities with HAWC with Inverse ComptonScattering
Presenter:
Man Hei H Leung
(The Chinese University of Hong Kong)
Author:
Man Hei H Leung
(The Chinese University of Hong Kong)
Water Cherenkov(HAWC) , ground based gamma ray observatory was proven to be sensitive enough
to capture the gamma ray signal originated from the DM decay in the galactic halo. However, the
observational data obtained show no excess in gamma ray flux in the Northern Fermi Bubble. The
absence of excess gamma ray flux gives a 95% confidence level upper limit of flux which can be used
to constrain the DM decay limit for different channels. Following the the work done by HAWC
Collaboration (2018), we introduce an additional Inverse Compton scattering contribution with the background
Interstellar radiation field(ISRF) and the extragalactic flux in the calculation. This is able to give a stronger
decay lifetime limit than the previous study has shown.
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