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arXiv · 2201.10644

$\gamma$-ray Emission from Classical Nova V392 Per: Measurements from Fermi and HAWC

A. Albert·R. Alfaro·C. Alvarez·J. C. Arteaga-Velázquez·D. Avila Rojas·H. A. Ayala Solares·R. Babu·E. Belmont-Moreno·C. Blochwitz·K. S. Caballero-Mora·T. Capistrán·A. Carramiñana·S. Casanova·O. Chaparro-Amaro·U. Cotti·J. Cotzomi·E. De la Fuente. C. de León. S. Coutiño de León·R. Diaz Hernandez·B. L. Dingus·M. A. DuVernois·M. Durocher·J. C. Díaz-Vélez·K. Engel·C. Espinoza·K. L. Fan·K. Fang·N. Fraija·J. A. García-González·F. Garfias·M. M. González·J. A. Goodman·J. P. Harding·S. Hernandez·J. Hinton·D. Huang·F. Hueyotl-Zahuantitla·P. Hüntemeyer·A. Iriarte·V. Joshi·A. Lara·W. H. Lee·J. T. Linnemann·A. L. Longinotti·G. Luis-Raya·J. Lundeen·K. Malone·V. Marandon·O. Martinez·J. Martínez-Castro·J. A. Matthews·P. Miranda-Romagnoli·J. A. Morales-Soto·E. Moreno·M. Mostafá·A. Nayerhoda·L. Nellen·M. Newbold·M. U. Nisa·R. Noriega-Papaqui·N. Omodei·A. Peisker·Y. Pérez Araujo·E. G. Pérez-Pérez·C. D. Rho·D. Rosa-González·E. Ruiz-Velasco·D. Salazar-Gallegos·F. Salesa Greus·A. Sandoval. J. Serna-Franco·A. J. Smith·Y. Son·R. W. Springer·O. Tibolla·K. Tollefson·I. Torres·R. Torres-Escobedo·R. Turner·F. Ureña-Mena·L. Villaseñor·X. Wang·E. Willox·A. Zepeda. H. Zhou·L. Chomiuk·E. Aydi·K. L. Li·B. D. Metzger·I. Vurm
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Abstract

This paper reports on the $\gamma$-ray properties of the 2018 Galactic nova V392 Per, spanning photon energies $\sim$0.1 GeV to 100 TeV by combining observations from the Fermi Gamma-ray Space Telescope and the HAWC Observatory. In one of the most rapidly evolving $\gamma$-ray signals yet observed for a nova, GeV $\gamma$ rays with a power law spectrum with index $\Gamma = 2.0 \pm 0.1$ were detected over eight days following V392 Per's optical maximum. HAWC observations constrain the TeV $\gamma$-ray signal during this time and also before and after. We observe no statistically significant evidence of TeV $\gamma$-ray emission from V392 Per, but present flux limits. Tests of the extension of the Fermi/LAT spectrum to energies above 5 TeV are disfavored by 2 standard deviations (95\%) or more. We fit V392 Per's GeV $\gamma$ rays with hadronic acceleration models, incorporating optical observations, and compare the calculations with HAWC limits.

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A. Albert, R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez, D. Avila Rojas, H. A. Ayala Solares, R. Babu, E. Belmont-Moreno, C. Blochwitz, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, O. Chaparro-Amaro, U. Cotti, J. Cotzomi, E. De la Fuente. C. de León. S. Coutiño de León, R. Diaz Hernandez, B. L. Dingus, M. A. DuVernois, M. Durocher, J. C. Díaz-Vélez, K. Engel, C. Espinoza, K. L. Fan, K. Fang, N. Fraija, J. A. García-González, F. Garfias, M. M. González, J. A. Goodman, J. P. Harding, S. Hernandez, J. Hinton, D. Huang, F. Hueyotl-Zahuantitla, P. Hüntemeyer, A. Iriarte, V. Joshi, A. Lara, W. H. Lee, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, J. Lundeen, K. Malone, V. Marandon, O. Martinez, J. Martínez-Castro, J. A. Matthews, P. Miranda-Romagnoli, J. A. Morales-Soto, E. Moreno, M. Mostafá, A. Nayerhoda, L. Nellen, M. Newbold, M. U. Nisa, R. Noriega-Papaqui, N. Omodei, A. Peisker, Y. Pérez Araujo, E. G. Pérez-Pérez, C. D. Rho, D. Rosa-González, E. Ruiz-Velasco, D. Salazar-Gallegos, F. Salesa Greus, A. Sandoval. J. Serna-Franco, A. J. Smith, Y. Son, R. W. Springer, O. Tibolla, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Ureña-Mena, L. Villaseñor, X. Wang, E. Willox, A. Zepeda. H. Zhou, L. Chomiuk, E. Aydi, K. L. Li, B. D. Metzger, I. Vurm. 2022-01-25. $\gamma$-ray Emission from Classical Nova V392 Per: Measurements from Fermi and HAWC. https://doi.org/10.3847/1538-4357/ac966a

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