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A GeV to TeV view of shell-type SNRs

https://doi.org/10.22323/1.395.0826

Fleischhack, Henrike; the HAWC collaboration; the Fermi-LAT collaboration (August 2021, 37th International Cosmic Ray Conference (ICRC 2021))

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Discovery of Gamma Rays from the Quiescent Sun with HAWC

https://doi.org/10.1103/PhysRevLett.131.051201

Albert, A.; Alfaro, R.; Alvarez, C.; Arteaga-Velázquez, J. C.; Avila Rojas, D.; Ayala Solares, H. A.; Babu, R.; Belmont-Moreno, E.; Brisbois, C.; Caballero-Mora, K. S.; et al (August 2023, Physical Review Letters)
γ-Ray Emission from Classical Nova V392 Per: Measurements from Fermi and HAWC

https://doi.org/10.3847/1538-4357/ac966a

Albert, A.; Alfaro, R.; Alvarez, C.; Arteaga-Velázquez, J. C.; Rojas, D. Avila; Solares, H. A. Ayala; Babu, R.; Belmont-Moreno, E.; Blochwitz, C.; Caballero-Mora, K. S.; et al (November 2022, The Astrophysical Journal)

Abstract This paper reports on theγ-ray properties of the 2018 Galactic nova V392 Per, spanning photon energies ∼0.1 GeV–100 TeV by combining observations from the Fermi Gamma-ray Space Telescope and the HAWC Observatory. As one of the most rapidly evolvingγ-ray signals yet observed for a nova, GeVγ-rays with a power-law spectrum with an index Γ = 2.0 ± 0.1 were detected over 8 days following V392 Per’s optical maximum. HAWC observations constrain the TeVγ-ray signal during this time and also before and after. We observe no statistically significant evidence of TeVγ-ray emission from V392 Per, but present flux limits. Tests disfavor the extension of the Fermi Large Area Telescope spectrum to energies above 5 TeV by 2 standard deviations (95%) or more. We fit V392 Per’s GeVγ-rays with hadronic acceleration models, incorporating optical observations, and compare the calculations with HAWC limits.
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First HAWC observations of the Sun constrain steady TeV gamma-ray emission

https://doi.org/10.1103/PhysRevD.98.123011

Albert, A.; Alfaro, R.; Alvarez, C.; Arceo, R.; Arteaga-Velázquez, J. C.; Avila Rojas, D.; Ayala Solares, H. A.; Belmont-Moreno, E.; BenZvi, S. Y.; Brisbois, C.; et al (December 2018, Physical Review D)
All-particle cosmic ray energy spectrum measured by the HAWC experiment from 10 to 500 TeV

https://doi.org/10.1103/PhysRevD.96.122001

Alfaro, R.; Alvarez, C.; Álvarez, J. D.; Arceo, R.; Arteaga-Velázquez, J. C.; Avila Rojas, D.; Ayala Solares, H. A.; Barber, A. S.; Becerril, A.; Belmont-Moreno, E.; et al (December 2017, Physical Review D)