Swift J1913.1+1946/GRB 221009A: Galactic sources of > 100 TeV-photon in spatial coincidence with the 250-TeV photon-like air shower reported by Carpet-2
ATel #15675; Nissim Fraija (UNAM), Magda Gonzalez(UNAM), for the HAWC Collaboration
on 13 Oct 2022; 19:30 UT
Credential Certification: Hugo Alberto Ayala Solares (hgayala@psu.edu)
Subjects: Gamma Ray, TeV, VHE, A Comment
A 250 TeV-photon like air shower was possibly associated with GRB 221009A in ATel #15669.
We note that 3HWC J1928+178 reported in the Third HAWC Catalog (https://iopscience.iop.org/article/10.3847/1538-4357/abc2d8/pdf) is a source of photons up to 140.5 TeV. This source is consistent with the location of 250 TeV-photon event reported by Carpet-2 within the 90% uncertainty.
HAWC is most sensitive to sources transiting directly at declinations of 19.0 degrees.
It is worth noting that the Galactic source LHAASO J1929+1745 (https://www.nature.com/articles/s41586-021-03498-z) reported with maximum energy photons up to 700 TeV could also be a source candidate of 250 TeV-photon event.
