%0 Journal Article
%A Acharyya, Atreya
%A Adams, Colin B.
%A Bangale, Priyadarshini
%A Bartkoske, Joshua T.
%A Benbow, Wystan
%A Buckley, J. H.
%A Chen, Yu
%A Christiansen, Jodi L.
%A Chromey, Alisha J.
%A Duerr, Anne
%A Errando, Manel
%A Godoy, Miguel E.
%A Falcone, Abe
%A Feldman, Sydney
%A Feng, Qi
%A Foote, Juniper
%A Fortson, Lucy
%A Furniss, Amy
%A Hanlon, William
%A Hanna, David
%A Hervet, Olivier
%A Hinrichs, Claire E.
%A Holder, Jamie
%A Humensky, Thomas B.
%A Jin, Weidong
%A Johnson, Madalyn N.
%A Kaaret, Philip
%A Kertzman, Mary
%A Kherlakian, Maria
%A Kieda, David
%A Kleiner, Tobias K.
%A Korzoun, Nikolas
%A Krennrich, Frank
%A Kumar, Sajan
%A Lang, Mark J.
%A Lundy, Matthew
%A Maier, Gernot
%A Millard, Matthew J.
%A Mooney, Connor L.
%A Moriarty, Patrick
%A Mukherjee, Reshmi
%A Ning, Wenmeng
%A Brien, Stephan Ó.
%A Ong, Rene A.
%A Pohl, Martin
%A Pueschel, Elisa
%A Quinn, John
%A Rabinowitz, Pazit L.
%A Ragan, Kenneth J.
%A Reynolds, Paul T.
%A Ribeiro, Deivid
%A Roache, Emmet
%A Sadeh, Iftach
%A Saha, Lab
%A Santander, Marcos
%A Sembroski, Glenn H.
%A Shang, Ruo
%A Splettstoesser, Megan
%A Tak, D.
%A Talluri, Anjana K.
%A Tucci, James V.
%A Vassiliev, Vladimir V.
%A Williams, David A.
%A Wong, Samantha L.
%A Woo, Jooyun
%T An In-depth Study of Gamma Rays from the Starburst Galaxy M82 with VERITAS
%J The astrophysical journal / Part 1
%V 981
%N 2
%@ 0004-637X
%C London
%I Institute of Physics Publ.
%M PUBDB-2025-04857
%M arXiv:2501.09998
%M arXiv:2501.09998
%P 189 
%D 2025
%Z 15 pages, 7 figures; Accepted for the publication in The Astrophysical Journal (ApJ)
%X Assuming Galactic cosmic rays originate in supernovae and the winds of massive stars, starburst galaxies should produce very-high-energy (VHE; E > 100 GeV) gamma-ray emission via the interaction of their copious quantities of cosmic rays with the large reservoirs of dense gas within the galaxies. Such VHE emission was detected by VERITAS from the starburst galaxy M82 in 2008–09. An extensive, multiyear campaign followed these initial observations, yielding a total of 254 hr of good-quality VERITAS data on M82. Leveraging modern analysis techniques and the larger exposure, these VERITAS data show a more statistically significant VHE signal (∼6.5 standard deviations, σ). The corresponding photon spectrum is well fit by a power law (Γ = 2.3 ± 0.3<sub>stat</sub> ± 0.2<sub>sys</sub>), and the observed integral flux is F (>450 GeV) = (3.2 ± 0.6<sub>stat</sub> ± 0.6<sub>sys</sub>) × 10<sup>−13</sup> cm<sup>−2</sup> s<sup>−1</sup>, or ∼0.4
%F PUB:(DE-HGF)16
%9 Journal Article
%R 10.3847/1538-4357/adab71
%U https://bib-pubdb1.desy.de/record/640718