Gamma-ray astronomy

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Search for dark matter annihilation signals from unidentified Fermi-LAT objects with H.E.S.S

(2021)

Authors:

HESS Collaboration, H Abdallah, F Aharonian, F Ait Benkhali, EO Angüner, C Arcaro, C Armand, T Armstrong, H Ashkar, M Backes, V Baghmanyan, V Barbosa Martins, A Barnacka, M Barnard, Y Becherini, D Berge, K Bernlöhr, B Bi, M Böttcher, C Boisson, J Bolmont, M de Bony de Lavergne, M Breuhaus, R Brose, F Brun, T Bulik, T Bylund, F Cangemi, S Caroff, S Casanova, P Chambery, J Catalano T Chand, A Chen, G Cotter, M Curylo, H Dalgleish, J Damascene Mbarubucyeye, ID Davids, J Davies, J Devin, A Djannati-Ataï, A Dmytriiev, A Donath, V Doroshenko, L Dreyer, L Du Plessis, C Duffy, K Egberts, S Einecke, G Emery, J-P Ernenwein, K Feijen, S Fegan, A Fiasson, G Fichet de Clairfontaine, G Fontaine, S Funk, M Füßling, S Gabici, YA Gallant, G Giavitto, L Giunti, D Glawion, JF Glicenstein, M-H Grondin, S Hattingh, M Haupt, G Hermann, JA Hinton, W Hofmann, C Hoischen, TL Holch, M Holler, M Hörbe, D Horns, Z Huang, D Huber, M Jamrozy, D Jankowsky, F Jankowsky, V Joshi, I Jung-Richardt, E Kasai, K Katarzyński, U Katz, D Khangulyan, B Khèlifi, S Klepser, W Kluzniak, Nu Komin, R Konno, K Kosack, D Kostunin, M Kreter, G Kukec Mezek, A Kundu, G Lamanna, S Le Stum, A Lemière, M Lemoine-Goumard, J-P Lenain, F Leuschner, C Levy, T Lohse, A Luashvili, I Lypova, J Mackey, J Majumdar, D Malyshev, D Malyshev, V Marandon, P Marchegiani, A Marcowith, A Mares, G Martì-Devesa, R Marx, G Maurin, PJ Meintjes, M Meyer, A Mitchell, R Moderski, L Mohrmann, A Montanari, C Moore, P Morris, E Moulin, J Muller, T Murach, K Nakashima, A Nayerhoda, M de Naurois, H Ndiyavala, J Niemiec, A Noel, L Oberholzer, P O'Brien, S Ohm, L Olivera-Nieto, E de Ona Wilhelmi, M Ostrowski, M Panter, S Panny, RD Parsons, G Peron, S Pita, V Poireau, DA Prokhorov, H Prokoph, G Pühlhofer, M Punch, A Quirrenbach, P Reichherzer, A Reimer, O Reimer, Q Remy, M Renaud, F Rieger, C Romoli, G Rowell, B Rudak, H Rueda Ricarte, E Ruiz-Velasco, V Sahakian, S Sailer, H Salzmann, DA Sanchez, A Santangelo, M Sasaki, F Schüssler, HM Schutte, U Schwanke, M Senniappan, AS Seyffert, JNS Shapopi, K Shiningayamwe, R Simoni, A Sinha, H Sol, H Spackman, A Specovius, S Spencer, M Spir-Jacob, L Stawarz, L Sun, R Steenkamp, C Stegmann, S Steinmassl, C Steppa, T Takahashi, T Tanaka, T Tavernier, AM Taylor, R Terrier, C Thorpe Morgan, JHE Thiersen, M Tluczykont, L Tomankova, C Trichard, M Tsirou, M Tsuji, R Tuffs, Y Uchiyama, DJ van der Walt, C van Eldik, C van Rensburg, B van Soelen, G Vasileiadis, J Veh, C Venter, A Viana, P Vincent, J Vink, HJ Völk, SJ Wagner, F Werner, R White, A Wierzcholska, Yu Wun Wong, H Yassin, A Yusafzai, M Zacharias, R Zanin, D Zargaryan, AA Zdziarski, A Zech, S Zhu, A Zmija, J Zorn, S Zouari, N Zywucka
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The FRAM robotic telescope for atmospheric monitoring at the Pierre Auger Observatory

Journal of Instrumentation IOP Publishing 16:06 (2021) p06027

Authors:

A Aab, P Abreu, M Aglietta, JM Albury, I Allekotte, A Almela, J Alvarez-Muñiz, R Alves Batista, GA Anastasi, L Anchordoqui, B Andrada, S Andringa, C Aramo, PR Araújo Ferreira, JC Arteaga Velázquez, H Asorey, P Assis, G Avila, AM Badescu, A Bakalova, A Balaceanu, F Barbato, RJ Barreira Luz, KH Becker, JA Bellido, C Berat, ME Bertaina, X Bertou, PL Biermann, T Bister, J Biteau, J Blazek, C Bleve, M Boháčová, D Boncioli, C Bonifazi, L Bonneau Arbeletche, N Borodai, AM Botti, J Brack, T Bretz, PG Brichetto Orchera, FL Briechle, P Buchholz, A Bueno, S Buitink, M Buscemi, KS Caballero-Mora, L Caccianiga, F Canfora, I Caracas, JM Carceller, R Caruso, A Castellina, F Catalani, G Cataldi, L Cazon, M Cerda, JA Chinellato, K Choi, J Chudoba, L Chytka, RW Clay, AC Cobos Cerutti, R Colalillo, A Coleman, MR Coluccia, R Conceição, A Condorelli, G Consolati, F Contreras, F Convenga, D Correia dos Santos, CE Covault, S Dasso, K Daumiller, BR Dawson, JA Day, RM de Almeida, J de Jesús, SJ de Jong, G De Mauro, JRT de Mello Neto, I De Mitri, J de Oliveira, D de Oliveira Franco, F de Palma, V de Souza, E De Vito, M del Río, O Deligny, A Di Matteo, C Dobrigkeit, JC D'Olivo, RC dos Anjos, MT Dova, J Ebr, R Engel, I Epicoco, M Erdmann, CO Escobar, A Etchegoyen, H Falcke, J Farmer, G Farrar, AC Fauth, N Fazzini, F Feldbusch, F Fenu, B Fick, JM Figueira, A Filipčič, T Fodran, MM Freire, T Fujii, A Fuster, C Galea, C Galelli, B García, AL Garcia Vegas, H Gemmeke, F Gesualdi, A Gherghel-Lascu, PL Ghia, U Giaccari, M Giammarchi, M Giller, J Glombitza, F Gobbi, F Gollan, G Golup, M Gómez Berisso, PF Gómez Vitale, JP Gongora, JM González, N González, I Goos, D Góra, A Gorgi, M Gottowik, TD Grubb, F Guarino, GP Guedes, E Guido, S Hahn, P Hamal, MR Hampel, P Hansen, D Harari, VM Harvey, A Haungs, T Hebbeker, D Heck, GC Hill, C Hojvat, JR Hörandel, P Horvath, M Hrabovský, T Huege, J Hulsman, A Insolia, PG Isar, P Janecek, JA Johnsen, J Jurysek, A Kääpä, KH Kampert, B Keilhauer, J Kemp, HO Klages, M Kleifges, J Kleinfeller, M Köpke, N Kunka, BL Lago, RG Lang, N Langner, MA Leigui de Oliveira, V Lenok, A Letessier-Selvon, I Lhenry-Yvon, D Lo Presti, L Lopes, R López, L Lu, Q Luce, A Lucero, JP Lundquist, A Machado Payeras, G Mancarella, D Mandat, BC Manning, J Manshanden, P Mantsch, S Marafico, AG Mariazzi, IC Mariş, G Marsella, D Martello, H Martinez, O Martínez Bravo, M Mastrodicasa, HJ Mathes, J Matthews, G Matthiae, E Mayotte, PO Mazur, G Medina-Tanco, D Melo, A Menshikov, K-D Merenda, S Michal, MI Micheletti, L Miramonti, S Mollerach, F Montanet, C Morello, M Mostafá, AL Müller, MA Muller, K Mulrey, R Mussa, M Muzio, WM Namasaka, A Nasr-Esfahani, L Nellen, M Niculescu-Oglinzanu, M Niechciol, D Nitz, D Nosek, V Novotny, L Nožka, A Nucita, LA Núñez, M Palatka, J Pallotta, P Papenbreer, G Parente, A Parra, M Pech, F Pedreira, J Pȩkala, R Pelayo, J Peña-Rodriguez, EE Pereira Martins, J Perez Armand, C Pérez Bertolli, M Perlin, L Perrone, S Petrera, T Pierog, M Pimenta, V Pirronello, M Platino, B Pont, M Pothast, P Privitera, M Prouza, A Puyleart, S Querchfeld, J Rautenberg, D Ravignani, M Reininghaus, J Ridky, F Riehn, M Risse, V Rizi, W Rodrigues de Carvalho, J Rodriguez Rojo, MJ Roncoroni, M Roth, E Roulet, AC Rovero, P Ruehl, SJ Saffi, A Saftoiu, F Salamida, H Salazar, G Salina, JD Sanabria Gomez, F Sánchez, EM Santos, E Santos, F Sarazin, R Sarmento, C Sarmiento-Cano, R Sato, P Savina, CM Schäfer, V Scherini, H Schieler, M Schimassek, M Schimp, F Schlüter, D Schmidt, O Scholten, P Schovánek, FG Schröder, S Schröder, J Schulte, SJ Sciutto, M Scornavacche, A Segreto, S Sehgal, RC Shellard, G Sigl, G Silli, O Sima, R Šmída, P Sommers, JF Soriano, J Souchard, R Squartini, M Stadelmaier, D Stanca, S Stanič, J Stasielak, P Stassi, A Streich, M Suárez-Durán, T Sudholz, T Suomijärvi, AD Supanitsky, J Šupík, Z Szadkowski, A Taboada, A Tapia, C Taricco, C Timmermans, O Tkachenko, P Tobiska, CJ Todero Peixoto, B Tomé, A Travaini, P Travnicek, C Trimarelli, M Trini, M Tueros, R Ulrich, M Unger, L Vaclavek, M Vacula, JF Valdés Galicia, L Valore, E Varela, V Varma K.C., A Vásquez-Ramírez, D Veberič, C Ventura, ID Vergara Quispe, V Verzi, J Vicha, J Vink, S Vorobiov, H Wahlberg, C Watanabe, AA Watson, M Weber, A Weindl, L Wiencke, H Wilczyński, T Winchen, M Wirtz, D Wittkowski, B Wundheiler, A Yushkov, O Zapparrata, E Zas, D Zavrtanik, M Zavrtanik, L Zehrer, A Zepeda, R Cunniffe, J Eliášek, I Ebrová, M Jelínek, S Karpov, P Kubánek, M Mašek
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Optical spectroscopy of blazars for the Cherenkov Telescope Array⋆

Astronomy & Astrophysics EDP Sciences 650 (2021) a106

Authors:

P Goldoni, S Pita, C Boisson, W Max-Moerbeck, E Kasai, DA Williams, F D’Ammando, V Navarro-Aranguiz, M Backes, U Barres de Almeida, J Becerra-Gonzalez, G Cotter, O Hervet, J-P Lenain, E Lindfors, H Sol, S Wagner
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Revealing x-ray and gamma ray temporal and spectral similarities in the GRB 190829A afterglow.

Science (New York, N.Y.) 372:6546 (2021) 1081-1085

Authors:

H.E.S.S. Collaboration, H Abdalla, F Aharonian, F Ait Benkhali, EO Angüner, C Arcaro, C Armand, T Armstrong, H Ashkar, M Backes, V Baghmanyan, V Barbosa Martins, A Barnacka, M Barnard, Y Becherini, D Berge, K Bernlöhr, B Bi, E Bissaldi, M Böttcher, C Boisson, J Bolmont, M de Bony de Lavergne, M Breuhaus, F Brun, P Brun, M Bryan, M Büchele, T Bulik, T Bylund, S Caroff, A Carosi, S Casanova, T Chand, S Chandra, A Chen, G Cotter, M Curyło, J Damascene Mbarubucyeye, ID Davids, J Davies, C Deil, J Devin, L Dirson, A Djannati-Ataï, A Dmytriiev, A Donath, V Doroshenko, L Dreyer, C Duffy, J Dyks, K Egberts, F Eichhorn, S Einecke, G Emery, J-P Ernenwein, K Feijen, S Fegan, A Fiasson, G Fichet de Clairfontaine, G Fontaine, S Funk, M Füßling, S Gabici, YA Gallant, G Giavitto, L Giunti, D Glawion, JF Glicenstein, M-H Grondin, J Hahn, M Haupt, G Hermann, JA Hinton, W Hofmann, C Hoischen, TL Holch, M Holler, M Hörbe, D Horns, D Huber, M Jamrozy, D Jankowsky, F Jankowsky, A Jardin-Blicq, V Joshi, I Jung-Richardt, E Kasai, MA Kastendieck, K Katarzyński, U Katz, D Khangulyan, B Khélifi, S Klepser, W Kluźniak, Nu Komin, R Konno, K Kosack, D Kostunin, M Kreter, G Lamanna, A Lemière, M Lemoine-Goumard, J-P Lenain, F Leuschner, C Levy, T Lohse, I Lypova, J Mackey, J Majumdar, D Malyshev, D Malyshev, V Marandon, P Marchegiani, A Marcowith, A Mares, G Martí-Devesa, R Marx, G Maurin, PJ Meintjes, M Meyer, A Mitchell, R Moderski, L Mohrmann, A Montanari, C Moore, P Morris, E Moulin, J Muller, T Murach, K Nakashima, A Nayerhoda, M de Naurois, H Ndiyavala, J Niemiec, L Oakes, P O'Brien, H Odaka, S Ohm, L Olivera-Nieto, E de Ona Wilhelmi, M Ostrowski, S Panny, M Panter, RD Parsons, G Peron, B Peyaud, Q Piel, S Pita, V Poireau, A Priyana Noel, DA Prokhorov, H Prokoph, G Pühlhofer, M Punch, A Quirrenbach, S Raab, R Rauth, P Reichherzer, A Reimer, O Reimer, Q Remy, M Renaud, F Rieger, L Rinchiuso, C Romoli, G Rowell, B Rudak, E Ruiz-Velasco, V Sahakian, S Sailer, H Salzmann, DA Sanchez, A Santangelo, M Sasaki, M Scalici, J Schäfer, F Schüssler, HM Schutte, U Schwanke, M Seglar-Arroyo, M Senniappan, AS Seyffert, N Shafi, JNS Shapopi, K Shiningayamwe, R Simoni, A Sinha, H Sol, A Specovius, S Spencer, M Spir-Jacob, Ł Stawarz, L Sun, R Steenkamp, C Stegmann, S Steinmassl, C Steppa, T Takahashi, T Tam, T Tavernier, AM Taylor, R Terrier, JHE Thiersen, D Tiziani, M Tluczykont, L Tomankova, M Tsirou, R Tuffs, Y Uchiyama, DJ van der Walt, C van Eldik, C van Rensburg, B van Soelen, G Vasileiadis, J Veh, C Venter, P Vincent, J Vink, HJ Völk, Z Wadiasingh, SJ Wagner, J Watson, F Werner, R White, A Wierzcholska, Yu Wun Wong, A Yusafzai, M Zacharias, R Zanin, D Zargaryan, AA Zdziarski, A Zech, SJ Zhu, J Zorn, S Zouari, N Żywucka, P Evans, K Page

Abstract:

Gamma-ray bursts (GRBs), which are bright flashes of gamma rays from extragalactic sources followed by fading afterglow emission, are associated with stellar core collapse events. We report the detection of very-high-energy (VHE) gamma rays from the afterglow of GRB 190829A, between 4 and 56 hours after the trigger, using the High Energy Stereoscopic System (H.E.S.S.). The low luminosity and redshift of GRB 190829A reduce both internal and external absorption, allowing determination of its intrinsic energy spectrum. Between energies of 0.18 and 3.3 tera-electron volts, this spectrum is described by a power law with photon index of 2.07 ± 0.09, similar to the x-ray spectrum. The x-ray and VHE gamma-ray light curves also show similar decay profiles. These similar characteristics in the x-ray and gamma-ray bands challenge GRB afterglow emission scenarios.
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THEZA: TeraHertz Exploration and Zooming-in for Astrophysics

Experimental Astronomy Springer Nature 51:3 (2021) 559-594

Authors:

Leonid I Gurvits, Zsolt Paragi, Viviana Casasola, John Conway, Jordy Davelaar, Heino Falcke, Rob Fender, Sándor Frey, Christian M Fromm, Cristina García Miró, Michael A Garrett, Marcello Giroletti, Ciriaco Goddi, José-Luis Gómez, Jeffrey van der Gucht, José Carlos Guirado, Zoltán Haiman, Frank Helmich, Elizabeth Humphreys, Violette Impellizzeri, Michael Kramer, Michael Lindqvist, Hendrik Linz, Elisabetta Liuzzo, Andrei P Lobanov, Yosuke Mizuno, Luciano Rezzolla, Freek Roelofs, Eduardo Ros, Kazi LJ Rygl, Tuomas Savolainen, Karl Schuster, Tiziana Venturi, Martina C Wiedner, J Anton Zensus
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