Cosmogenic photon and neutrino fluxes in the Auger era

Journal of Cosmology and Astroparticle Physics IOP Publishing 2019:1 (2019) 2

Authors:

Rafael Alves Batista, Rogerio M de Almeida, Bruno Lago, Kumiko Kotera

Abstract:

The interaction of ultra-high-energy cosmic rays (UHECRs) with pervasive photon fields generates associated cosmogenic fluxes of neutrinos and photons due to photohadronic and photonuclear processes taking place in the intergalactic medium. We perform a fit of the UHECR spectrum and composition measured by the Pierre Auger Observatory for four source emissivity scenarios: power-law redshift dependence with one free parameter, active galactic nuclei, gamma-ray bursts, and star formation history. We show that negative source emissivity evolution is favoured if we treat the source evolution as a free parameter. In all cases, the best fit is obtained for relatively hard spectral indices and low maximal rigidities, for compositions at injection dominated by intermediate nuclei (nitrogen and silicon groups). In light of these results, we calculate the associated fluxes of neutrinos and photons. Finally, we discuss the prospects for the future generation of high-energy neutrino and gamma-ray observatories to constrain the sources of UHECRs.

Monte Carlo studies for the optimisation of the Cherenkov Telescope Array layout

Astroparticle Physics (2019)

Authors:

Samuel Timothy Spencer, A Acharyya, I Agudo, EO Angüner, R Alfaro, J Alfaro, C Alispach, R Aloisio, R Alves Batista, J-P Amans, L Amati, E Amato, G Ambrosi, LA Antonelli, C Aramo, T Armstrong, F Arqueros, L Arrabito, K Asano, H Ashkar, C Balazs, M Balbo, B Balmaverde, P Barai, A Barbano, M Barkov, U Barres de Almeida, JA Barrio, D Bastieri, J Becerra González, J Becker Tjus, L Bellizzi, W Benbow, E Bernardini, MI Bernardos, K Bernlöhr, A Berti, M Berton, B Bertucci, V Beshley, B Biasuzzi, C Bigongiari, R Bird, E Bissaldi, J Biteau, O Blanch, J Blazek, C Boisson, G Bonanno, A Bonardi, C Bonavolontá, G Bonnoli, P Bordas, M Böttcher, J Bregeon, A Brill, AM Brown, K Brügge, P Brun, P Bruno, A Bulgarelli, T Bulik, M Burton, A Burtovoi, G Busetto, R Cameron, R Canestrari, M Capalbi, A Caproni, R Capuzzo-Dolcetta, P Caraveo, S Caroff, R Carosi, S Casanova, E Cascone, F Cassol, F Catalani, O Catalano, D Cauz, M Cerruti, S Chaty, A Chen, M Chernyakova, G Chiaro, M Cie´slar, SM Colak, V Conforti, E Congiu, JL Contreras, J Cortina, A Costa, H Costantini, G Cotter, P Cristofari, P Cumani, G Cusumano, A D’Aí, F D’Ammando, L Dangeon, P Da Vela, F Dazzi, A De Angelis, V De Caprio, R de Cássia dos Anjos, F De Frondat, EM de Gouveia Dal Pino, B De Lotto, D De Martino, M de Naurois, E de O na Wilhelmi, F de Palma, V de Souza, M Del Santo, C Delgado, D della Volpe, T Di Girolamo, F Di Pierro, L Di Venere, C Díaz, S Diebold, A Djannati-Ataï, A Dmytriiev, D Dominis Prester, A Donini, D Dorner, M Doro, J-L Dournaux, J Ebr, TRN Ekoume, D Elsässer, G Emery, D Falceta-Goncalves, E Fedorova, S Fegan, Q Feng, G Ferrand, E Fiandrini, A Fiasson, M Filipovic, V Fioretti, M Fiori, S Flis, MV Fonseca, G Fontaine, L Freixas Coromina, S Fukami, Y Fukui, S Funk, M Füßling, D Gaggero, G Galanti, RJ Garcia López, M Garczarczyk, D Gascon, T Gasparetto, M Gaug, A Ghalumyan, F Gianotti, G Giavitto, N Giglietto, F Giordano, M Giroletti, J Gironnet, J-F Glicenstein, R Gnatyk, P Goldoni, JM González, MM González, KN Gourgouliatos, T Grabarczyk, J Granot, D Green, T Greenshaw, M-H Grondin, O Gueta, D Hadasch, T Hassan, M Hayashida, M Heller, O Hervet, J Hinton, N Hiroshima, B Hnatyk, W Hofmann, P Horvath, M Hrabovsky, D Hrupec, TB Humensky, M Hütten, T Inada, F Iocco, M Ionica, M Iori, Y Iwamura, M Jamrozy, P Janecek, D Jankowsky, P Jean, L Jouvin, J Jurysek, P Kaaret, LHS Kadowaki, S Karkar, D Kerszberg, B Khélifi, D Kieda, S Kimeswenger, W Klu´zniak, J Knapp, J Knödlseder, Y Kobayashi, B Koch, J Kocot, N Komin, A Kong, G Kowal, M Krause, H Kubo, J Kushida, P Kushwaha, V La Parola, G La Rosa, M Lallena Arquillo, RG Lang, J Lapington, O Le Blanc, J Lefaucheur, MA Leigui de Oliveira, M Lemoine-Goumard, J-P Lenain, G Leto, R Lico, E Lindfors, T Lohse, S Lombardi, F Longo, A Lopez, M López, A Lopez-Oramas, R López-Coto, S Loporchio, PL Luque-Escamilla, E Lyard, MC Maccarone, E Mach, C Maggio, P Majumdar, G Malaguti, M Mallamaci, D Mandat, G Maneva, M Manganaro, S Mangano, M Marculewicz, M Mariotti, J Martí, M Martínez, G Martínez, H Martínez-Huerta, S Masuda, N Maxted, D Mazin, J-L Meunier, M Meyer, S Micanovic, R Millul, IA Minaya, A Mitchell, T Mizuno, R Moderski, L Mohrmann, T Montaruli, A Moralejo, D Morcuende, G Morlino, A Morselli, E Moulin, R Mukherjee, P Munar, C Mundell, T Murach, A Nagai, T Nagayoshi, T Naito, T Nakamori, R Nemmen, J Niemiec, D Nieto, M Nievas Rosillo, M Niko\lajuk, D Ninci, K Nishijima, K Noda, D Nosek, M Nöthe, S Nozaki, M Ohishi, Y Ohtani, A Okumura, RA Ong, M Orienti, R Orito, M Ostrowski, N Otte, Z Ou, I Oya, A Pagliaro, M Palatiello, M Palatka, R Paoletti, JM Paredes, G Pareschi, N Parmiggiani, RD Parsons, B Patricelli, A Pe’er, M Pech, P Pe nil Del Campo, J Pérez-Romero, M Perri, M Persic, P-O Petrucci, O Petruk, K Pfrang, Q Piel, E Pietropaolo, M Pohl, M Polo, J Poutanen, E Prandini, N Produit, H Prokoph, M Prouza, H Przybilski, G Pühlhofer, M Punch, F Queiroz, A Quirrenbach, S Rainò, R Rando, S Razzaque, O Reimer, N Renault-Tinacci, Y Renier, D Ribeiro, M Ribó, J Rico, F Rieger, V Rizi, G Rodriguez Fernandez, JC Rodriguez-Ramirez, JJ Rodrí-guez Vázquez, P Romano, G Romeo, M Roncadelli, J Rosado, G Rowell, B Rudak, A Rugliancich, C Rulten, I Sadeh, L Saha, T Saito, S Sakurai, F Salesa Greus, P Sangiorgi, H Sano, M Santander, A Santangelo, R Santos-Lima, A Sanuy, K Satalecka, FG Saturni, U Sawangwit, S Schlenstedt, P Schovanek, F Schussler, U Schwanke, E Sciacca, S Scuderi, K Sedlaczek, M Seglar-Arroyo, O Sergijenko, K Seweryn, A Shalchi, RC Shellard, H Siejkowski, A Sillanpää, A Sinha, G Sironi, V Sliusar, A Slowikowska, H Sol, A Specovius, S Spencer, G Spengler, A Stamerra, S Stanič, L Stawarz, S Stefanik, T Stolarczyk, U Straumann, T Suomijarvi, P ´Swierk, T Szepieniec, G Tagliaferri, H Tajima, T Tam, F Tavecchio, L Taylor, LA Tejedor, P Temnikov, T Terzic, V Testa, L Tibaldo, CJ Todero Peixoto, F Tokanai, L Tomankova, D Tonev, DF Torres, G Tosti, L Tosti, N Tothill, F Toussenel, G Tovmassian, P Travnicek, C Trichard, G Umana, V Vagelli, M Valentino, B Vallage, P Vallania, L Valore, J Vandenbroucke, GS Varner, G Vasileiadis, V Vassiliev, M Vázquez Acosta, M Vecchi, S Vercellone, S Vergani, GP Vettolani, A Viana, CF Vigorito, J Vink, V Vitale, H Voelk, A Vollhardt, S Vorobiov, SJ Wagner, R Walter, F Werner, R White, A Wierzcholska, M Will, DA Williams, R Wischnewski, L Yang, T Yoshida, T Yoshikoshi, M Zacharias, L Zampieri, M Zavrtanik, D Zavrtanik, AA Zdziarski, A Zech, H Zechlin, A Zenin, VI Zhdanov, S Zimmer, J Zorn

On the maximum energy of protons in the hotspots of AGN jets

EPJ Web of Conferences EDP Sciences 210 (2019) 04006

Authors:

Anabella T Araudo, Anthony R Bell, James Matthews, Katherine Blundell

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

arXiv e-prints (2019)

Authors:

Samuel Timothy Spencer, A Albert, R Alfaro, H Ashkar, C Alvarez, J Álvarez, JC Arteaga-Velázquez, HA Ayala Solares, R Arceo, JA Bellido, S BenZvi, T Bretz, CA Brisbois, AM Brown, F Brun, KS Caballero-Mora, A Carosi, A Carrami nana, S Casanova, PM Chadwick, G Cotter, S Couti no De León, P Cristofari, S Dasso, E de la Fuente, BL Dingus, P Desiati, F de O Salles, V de Souza, D Dorner, JC Díaz-Vélez, JA García-González, MA DuVernois, G Di Sciascio, K Engel, H Fleischhack, N Fraija, S Funk, J-F Glicenstein, J Gonzalez, MM González, JA Goodman, JP 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, J-P Lenain, K Link, R López-Coto, V Marandon, M Mariotti, J Martínez-Castro, H Martínez-Huerta, M Mostafá, A Nayerhoda, L Nellen, E de O na Wilhelmi, RD Parsons, B Patricelli, A Pichel, Q Piel, E Prandini, E Pueschel, S Procureur, A Reisenegger, C Rivière, J Rodriguez, AC Rovero, G Rowell, EL Ruiz-Velasco, A Sandoval, M Santander, T Sako, TK Sako, K Satalecka, H Schoorlemmer, F Schüssler, M Seglar-Arroyo, AJ Smith, S Spencer, P Surajbali, E Tabachnick, AM Taylor, O Tibolla, I Torres, B Vallage, A Viana, JJ Watson, T Weisgarber, F Werner, R White, R Wischnewski, R Yang, A Zepeda, H Zhou

The Southern Wide-Field Gamma-Ray Observatory (SWGO): A Next-Generation Ground-Based Survey Instrument for VHE Gamma-Ray Astronomy

arXiv e-prints (2019)

Authors:

Samuel Timothy Spencer, P Abreu, A Albert, R Alfaro, C Alvarez, R Arceo, P Assis, F Barao, J Bazo, JF Beacom, J Bellido, S BenZvi, T Bretz, C Brisbois, AM Brown, F Brun, M Buscemi, KS Caballero Mora, P Camarri, A Carrami nana, S Casanova, A Chiavassa, R Conceiç ao, G Cotter, P Cristofari, S Dasso, A De Angelis, M De Maria, P Desiati, G Di Sciascio, JC Díaz Vélez, C Dib, B Dingus, D Dorner, M Doro, C Duffy, M DuVernois, R Engel, M Fernandez Alonso, H Fleischhack, P Fonte, N Fraija, S Funk, JA García-González, MM González, JA Goodman, T Greenshaw, JP Harding, A Haungs, B Hona, P Huentemeyer, A Insolia, A Jardin-Blicq, V Joshi, K Kawata, S Kunwar, G La Mura, J Lapington, JP Lenain, R López-Coto, K Malone, J Martinez-Castro, H Martínez-Huerta, L Mendes, E Moreno, M Mostafá, KCY Ng, MU Nisa, F Peron, A Pichel, M Pimenta, E Prandini, S Rainò, A Reisenegger, J Rodriguez, M Roth, A Rovero, E Ruiz-Velasco, T Sako, A Sandoval, M Santander, K Satalecka, M Schneider, H Schoorlemmer, F Schüssler, RC Shellard, A Smith, S Spencer, W Springer, P Surajbali, K Tollefson, B Tomé, I Torres, A Viana, T Weisgarber, R Wischnewski, A Zepeda, B Zhou, H Zhou