Science Case for a Wide Field-of-View Very-High-Energy Gamma-Ray Observatory in the Southern Hemisphere

A. Albert , R. Alfaro , H. Ashkar (1) , C. Alvarez , J. Alvarez , J.C. Arteaga-Velázquez , H.A. Ayala Solares , R. Arceo , J.A. Bellido , S. Benzvi , T. Bretz , C.A. Brisbois , A.M. Brown , F. Brun (1) , K.S. Caballero-Mora , A. Carosi (2) , A. Carramiñana , S. Casanova , P.M. Chadwick , G. Cotter , S. Coutiño de León , P. Cristofari , S. Dasso , E. de La Fuente , B.L. Dingus , P. Desiati , F. de O. Salles , V. de Souza , D. Dorner , J.C. Díaz-Vélez , J.A. García-González , M.A. Duvernois , G. Di Sciascio , K. Engel , H. Fleischhack , N. Fraija , S. Funk , J-F. Glicenstein (1) , J. Gonzalez , M.M. González , J.A. Goodman , J.P. Harding , A. Haungs , J. Hinton , B. Hona , D. Hoyos , P. Huentemeyer , A. Iriarte , A. Jardin-Blicq , V. Joshi , S. Kaufmann , K. Kawata , S. Kunwar , J. Lefaucheur (1) , J.-P. Lenain (3) , K. Link , R. López-Coto , V. Marandon , M. Mariotti , J. Martínez-Castro , H. Martínez-Huerta , M. Mostafá , A. Nayerhoda , L. Nellen , E. de Oña Wilhelmi , R.D. Parsons , B. Patricelli , A. Pichel , Q. Piel (2) , E. Prandini , E. Pueschel , S. Procureur (1) , A. Reisenegger , C. Rivière , J. Rodriguez (4) , A.C. Rovero , G. Rowell , E.L. Ruiz-Velasco , A. Sandoval , M. Santander , T.K. Sako , K. Satalecka , H. Schoorlemmer , F. Schüssler (1) , M. Seglar-Arroyo (1) , A.J. Smith , S. Spencer , P. Surajbali , E. Tabachnick , A.M. Taylor , O. Tibolla , I. Torres , B. Vallage (1) , A. Viana , J.J. Watson , T. Weisgarber , Felix Werner , R. White , R. Wischnewski , R. Yang , A. Zepeda , H. Zhou

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
2 LAPP - Laboratoire d'Annecy de Physique des Particules
3 LPNHE (UMR_7585) - Laboratoire de Physique Nucléaire et de Hautes Énergies
4 AIM (UMR7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation

We outline the science motivation for SGSO, the Southern Gamma-Ray Survey Observatory. SGSO will be a next-generation wide field-of-view gamma-ray survey instrument, sensitive to gamma-rays in the energy range from 100 GeV to hundreds of TeV. Its science topics include unveiling galactic and extragalactic particle accelerators, monitoring the transient sky at very high energies, probing particle physics beyond the Standard Model, and the characterization of the cosmic ray flux. SGSO will consist of an air shower detector array, located in South America. Due to its location and large field of view, SGSO will be complementary to other current and planned gamma-ray observatories such as HAWC, LHAASO, and CTA.

Mots clés: gamma ray: VHE; cosmic radiation: flux; showers: atmosphere; observatory; Cherenkov Telescope Array; shower detector; accelerator; new physics; monitoring; galaxy; HAWC; air

Domaines: Astrophysique [astro-ph]; Instrumentations et Détecteurs [physics.ins-det]

A. Albert, R. Alfaro, H. Ashkar, C. Alvarez, J. Alvarez, et al.. Science Case for a Wide Field-of-View Very-High-Energy Gamma-Ray Observatory in the Southern Hemisphere. 2019. ⟨hal-02089566⟩