Gamma-ray astronomy

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Sensitivity of the Cherenkov Telescope Array for probing cosmology and fundamental physics with gamma-ray propagation

Journal of Cosmology and Astroparticle Physics (2021)

Authors:

Samuel Timothy Spencer, H Abdalla, H Abe, F Acero, A Acharyya, R Adam, I Agudo, A Aguirre-Santaella, R Alfaro, J Alfaro, C Alispach, R Aloisio, R Alves Batista, L Amati, E Amato, G Ambrosi, EO AngĂŒner, A Araudo, T Armstrong, F Arqueros, L Arrabito, K Asano, Y AscasĂ­bar, M Ashley, M Backes, C Balazs, M Balbo, B Balmaverde, A Baquero Larriva, V Barbosa Martins, M Barkov, L Baroncelli, U Barres de Almeida, JA Barrio, P-I Batista, J Becerra GonzĂĄlez, Y Becherini, G Beck, J Becker Tjus, R Belmont, W Benbow, E Bernardini, A Berti, M Berton, B Bertucci, V Beshley, B Bi, B Biasuzzi, A Biland, E Bissaldi, J Biteau, O Blanch, F Bocchino, C Boisson, J Bolmont, G Bonanno, L Bonneau Arbeletche, G Bonnoli, P Bordas, E Bottacini, M Böttcher, V Bozhilov, J Bregeon, A Brill, AM Brown, P Bruno, A Bruno, A Bulgarelli, M Burton, M Buscemi, A Caccianiga, R Cameron, M Capasso, M Caprai, A Caproni, R Capuzzo-Dolcetta, P Caraveo, R Carosi, A Carosi, S Casanova, E Cascone, D Cauz, K Cerny, M Cerruti, P Chadwick, S Chaty, A Chen, M Chernyakova, G Chiaro, A Chiavassa, L Chytka, V Conforti, F Conte, JL Contreras, J Coronado-Blazquez, J Cortina, A Costa, H Costantini, S Covino, P Cristofari, O Cuevas, F D’Ammando, MK Daniel, J Davies, F Dazzi, A De Angelis, M de Bony de Lavergne, V De Caprio, R de CĂĄssia dos Anjos, 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, C Delgado, R Della Ceca, D della Volpe, D Depaoli, T Di Girolamo, F Di Pierro, C DĂ­az, C DĂ­az-Bahamondes, S Diebold, A Djannati-AtaĂŻ, A Dmytriiev, A DomĂ­nguez, A Donini, D Dorner, M Doro, J Dournaux, VV Dwarkadas, J Ebr, C Eckner, S Einecke, TRN Ekoume, D ElsĂ€sser, G Emery, C Evoli, M Fairbairn, D Falceta-Goncalves, S Fegan, Q Feng, G Ferrand, E Fiandrini, A Fiasson, V Fioretti, L Foffano, MV Fonseca, L Font, G Fontaine, FJ Franco, L Freixas Coromina, S Fukami, Y Fukazawa, Y Fukui, D Gaggero, G Galanti, V Gammaldi, E Garcia, M Garczarczyk, D Gascon, M Gaug, A Gent, A Ghalumyan, G Ghirlanda, F Gianotti, M Giarrusso, G Giavitto, N Giglietto, F Giordano, J Glicenstein, P Goldoni, JM GonzĂĄlez, K Gourgouliatos, T Grabarczyk, P Grandi, J Granot, D Grasso, J Green, J Grube, O Gueta, S Gunji, A Halim, M Harvey, T Hassan Collado, K Hayashi, M Heller, S HernĂĄndez Cadena, O Hervet, J Hinton, N Hiroshima, B Hnatyk, R Hnatyk, D Hoffmann, W Hofmann, J Holder, D Horan, J Hörandel, P Horvath, T Hovatta, M Hrabovsky, D Hrupec, G Hughes, M HĂŒtten, M Iarlori, T Inada, S Inoue, A Insolia, M Ionica, M Iori, M Jacquemont, M Jamrozy, P Janecek, I JimĂ©nez MartĂ­nez, W Jin, I Jung-Richardt, J Jurysek, P Kaaret, V Karas, S Karkar, N Kawanaka, D Kerszberg, B KhĂ©lifi, R Kissmann, J Knödlseder, Y Kobayashi, K Kohri, N Komin, A Kong, K Kosack, H Kubo, N La Palombara, G Lamanna, RG Lang, J Lapington, P Laporte, J Lefaucheur, M Lemoine-Goumard, J Lenain, F Leone, G Leto, F Leuschner, E Lindfors, S Lloyd, T Lohse, S Lombardi, F Longo, A Lopez, M LĂłpez, R LĂłpez-Coto, S Loporchio, F Lucarelli, PL Luque-Escamilla, E Lyard, C Maggio, A Majczyna, M Makariev, M Mallamaci, D Mandat, G Maneva, M Manganaro, G ManicĂČ, A Marcowith, M Marculewicz, S Markoff, P Marquez, J MartĂ­, O Martinez, M MartĂ­nez, G MartĂ­nez, H MartĂ­nez-Huerta, G Maurin, D Mazin, JD Mbarubucyeye, D Medina Miranda, M Meyer, S Micanovic, T Miener, M Minev, JM Miranda, A Mitchell, T Mizuno, B Mode, R Moderski, L Mohrmann, E Molina, T Montaruli, A Moralejo, J Morales Merino, D Morcuende-Parrilla, A Morselli, R Mukherjee, C Mundell, T Murach, H Muraishi, A Nagai, T Nakamori, R Nemmen, J Niemiec, D Nieto, M Nievas, M Nikolajuk, K Nishijima, K Noda, D Nosek, S Nozaki, P O’Brien, Y Ohira, M Ohishi, T Oka, RA Ong, M Orienti, R Orito, M Orlandini, E Orlando, JP Osborne, M Ostrowski, I Oya, A Pagliaro, M Palatka, D Paneque, FR Pantaleo, JM Paredes, N Parmiggiani, B Patricelli, L Pavletić, A Pe’er, M Pech, M Pecimotika, M Peresano, M Persic, O Petruk, K Pfrang, P Piatteli, E Pietropaolo, R Pillera, B Pilszyk, D Pimentel, F Pintore, S Pita, M Pohl, V Poireau, M Polo, RR Prado, J Prast, G Principe, N Produit, H Prokoph, M Prouza, H Przybilski, E Pueschel, G PĂŒhlhofer, ML Pumo, M Punch, F Queiroz, A Quirrenbach, R Rando, S Razzaque, E Rebert, S Recchia, P Reichherzer, O Reimer, A Reimer, Y Renier, T Reposeur, W Rhode, D Ribeiro, M RibĂł, T Richtler, J Rico, F Rieger, V Rizi, J Rodriguez, G Rodriguez Fernandez, JC Rodriguez Ramirez, JJ RodrĂ­guez VĂĄzquez, P Romano, G Romeo, M Roncadelli, J Rosado, A Rosales de Leon, G Rowell, B Rudak, W Rujopakarn, F Russo, I Sadeh, L Saha, T Saito, F Salesa Greus, D Sanchez, M SĂĄnchez-Conde, P Sangiorgi, H Sano, M Santander, EM Santos, A Sanuy, S Sarkar, FG Saturni, U Sawangwit, A Scherer, B Schleicher, P Schovanek, F Schussler, U Schwanke, E Sciacca, S Scuderi, M Seglar Arroyo, O Sergijenko, M Servillat, K Seweryn, A Shalchi, P Sharma, RC Shellard, H Siejkowski, A Sinha, V Sliusar, A Slowikowska, A Sokolenko, H Sol, A Specovius, S Spencer, D Spiga, A Stamerra, S Stanič, R Starling, T Stolarczyk, U Straumann, J StriĆĄković, Y Suda, P ÂŽSwierk, G Tagliaferri, H Takahashi, M Takahashi, F Tavecchio, L Taylor, LA Tejedor, P Temnikov, R Terrier, T Terzic, V Testa, W Tian, L Tibaldo, D Tonev, DF Torres, E Torresi, L Tosti, N Tothill, G Tovmassian, P Travnicek, S Truzzi, F Tuossenel, G Umana, M Vacula, V Vagelli, M Valentino, B Vallage, P Vallania, C van Eldik, GS Varner, V Vassiliev, M VĂĄzquez Acosta, M Vecchi, J Veh, S Vercellone, S Vergani, V Verguilov, GP Vettolani, A Viana, CF Vigorito, V Vitale, S Vorobiov, I Vovk, T Vuillaume, SJ Wagner, R Walter, J Watson, M White, R White, R Wiemann, A Wierzcholska, M Will, DA Williams, R Wischnewski, A Wolter, R Yamazaki, S Yanagita, L Yang, T Yoshikoshi, M Zacharias, G Zaharijas, D Zaric, M Zavrtanik, D Zavrtanik, AA Zdziarski, A Zech, H Zechlin, VI Zhdanov, M \vZivec

cta-observatory/ctapipe: v0.10.5

Zenodo (2021)

Authors:

Samuel Timothy Spencer, Karl Kosack, Jason Watson, Maximilian Nöthe, Jean Jacquemier, Alison Mitchell, Dominik Neise, Christoph Deil, Samuel Timothy Spencer, Raquel De Los Reyes, Franca Cassol, Kai BrĂŒgge, Michele Mastropietro, Thomas Vuillaume, JĂ©rĂ©mie Decock, Moralejo, Wrijupan Bhattacharyya, Francesco Visconti, Lukas Nickel, Jose Enrique Ruiz, Mgaug, Noah Biederbeck, Michele Peresano, Ruben Lopez-Coto, Orelgueta, Cyril Alispach, Julien Lefaucheur, Konstantin Pfrang, Moritz HĂŒtten, Thomasarmstrong, Alice Donini

Measuring the distance to the black hole candidate X-ray binary MAXI J1348–630 using H I absorption

Monthly Notices of the Royal Astronomical Society: Letters Oxford University Press 501:1 (2020) L60-L64

Authors:

J Chauhan, Jca Miller-Jones, W Raja, Jr Allison, Pfl Jacob, Ge Anderson, F Carotenuto, S Corbel, Robert Fender, A Hotan, M Whiting, Pa Woudt, B Koribalski, E Mahony

Abstract:

We present neutral hydrogen (H I) absorption spectra of the black hole candidate X-ray binary (XRB) MAXI J1348–630 using the Australian Square Kilometre Array Pathfinder (ASKAP) and MeerKAT. The ASKAP H I spectrum shows a maximum negative radial velocity (with respect to the local standard of rest) of −31 ± 4 km s−1 for MAXI J1348–630, as compared to −50 ± 4 km s−1 for a stacked spectrum of several nearby extragalactic sources. This implies a most probable distance of 2.2+0.5−0.6 kpc for MAXI J1348–630, and a strong upper limit of the tangent point distance at 5.3 ± 0.1 kpc. Our preferred distance implies that MAXI J1348–630 reached 17 ± 10  per cent of the Eddington luminosity at the peak of its outburst, and that the source transited from the soft to the hard X-ray spectral state at 2.5 ± 1.5  per cent of the Eddington luminosity. The MeerKAT H I spectrum of MAXI J1348–630 (obtained from the older, low-resolution 4k mode) is consistent with the re-binned ASKAP spectrum, highlighting the potential of the eventual capabilities of MeerKAT for XRB spectral line studies.

Optical spectroscopy of Blazars for the Cherenkov Telescope Array

(2020)

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

The Thousand-Pulsar-Array programme on MeerKAT II: observing strategy for pulsar monitoring with subarrays

(2020)

Authors:

X Song, P Weltevrede, MJ Keith, S Johnston, A Karastergiou, M Bailes, ED Barr, S Buchner, M Geyer, BV Hugo, A Jameson, A Parthasarathy, DJ Reardon, M Serylak, RM Shannon, R Spiewak, W van Straten, V Venkatraman Krishnan