Gamma-ray astronomy

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LOFAR 144-MHz follow-up observations of GW170817

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 494:4 (2020) 5110-5117

Authors:

JW Broderick, TW Shimwell, K Gourdji, A Rowlinson, S Nissanke, K Hotokezaka, PG Jonker, C Tasse, MJ Hardcastle, JBR Oonk, RP Fender, RAMJ Wijers, A Shulevski, AJ Stewart, S ter Veen, VA Moss, MHD van der Wiel, DA Nichols, A Piette, ME Bell, D Carbone, S Corbel, J Eislöffel, J-M Grießmeier, EF Keane, CJ Law, T Muñoz-Darias, M Pietka, M Serylak, AJ van der Horst, J van Leeuwen, R Wijnands, P Zarka, JM Anderson, MJ Bentum, R Blaauw, WN Brouw, M Brüggen, B Ciardi, M de Vos, S Duscha, RA Fallows, TMO Franzen, MA Garrett, AW Gunst, M Hoeft, JR Hörandel, M Iacobelli, E Jütte, LVE Koopmans, A Krankowski, P Maat, G Mann, H Mulder, A Nelles, H Paas, M Pandey-Pommier, R Pekal, W Reich, HJA Röttgering, DJ Schwarz, O Smirnov, M Soida, MC Toribio, MP van Haarlem, RJ van Weeren, C Vocks, O Wucknitz, P Zucca
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Search for magnetically-induced signatures in the arrival directions of ultra-high-energy cosmic rays measured at the Pierre Auger Observatory

Journal of Cosmology and Astroparticle Physics IOP Publishing 2020:06 (2020) 017-017

Authors:

A Aab, P Abreu, M Aglietta, JM Albury, I Allekotte, A Almela, J Alvarez Castillo, J Alvarez-Muñiz, R Alves Batista, GA Anastasi, L Anchordoqui, B Andrada, S Andringa, C Aramo, PR Araújo Ferreira, 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, A Blanco, J Blazek, C Bleve, M Boháčová, D Boncioli, C Bonifazi, L Bonneau Arbeletche, N Borodai, AM Botti, J Brack, T Bretz, FL Briechle, P Buchholz, A Bueno, S Buitink, M Buscemi, KS Caballero-Mora, L Caccianiga, L Calcagni, A Cancio, 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, 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, V de Souza, J Debatin, M del Río, O Deligny, N Dhital, A Di Matteo, ML Díaz Castro, C Dobrigkeit, JC D'Olivo, Q Dorosti, 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, G Golup, M Gómez Berisso, PF Gómez Vitale, JP Gongora, N González, I Goos, D Góra, A Gorgi, M Gottowik, TD Grubb, F Guarino, GP Guedes, E Guido, S Hahn, R Halliday, 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, JA Johnsen, J Jurysek, A Kääpä, KH Kampert, B Keilhauer, J Kemp, HO Klages, M Kleifges, J Kleinfeller, M Köpke, G Kukec Mezek, BL Lago, D LaHurd, RG Lang, MA Leigui de Oliveira, V Lenok, A Letessier-Selvon, I Lhenry-Yvon, D Lo Presti, L Lopes, R López, R Lorek, Q Luce, A Lucero, A Machado Payeras, M Malacari, G Mancarella, D Mandat, BC Manning, J Manshanden, P Mantsch, S Marafico, AG Mariazzi, IC Maris, 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, D Mockler, S Mollerach, F Montanet, C Morello, M Mostafá, AL Müller, MA Muller, K Mulrey, R Mussa, M Muzio, WM Namasaka, L Nellen, M Niculescu-Oglinzanu, M Niechciol, D Nitz, D Nosek, V Novotny, L Nožka, A Nucita, LA Núñez, M Palatka, J Pallotta, MP Panetta, P Papenbreer, G Parente, A Parra, M Pech, F Pedreira, J Pekala, R Pelayo, J Peña-Rodriguez, J Perez Armand, M Perlin, L Perrone, C Peters, 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, P Ristori, 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, C Schäfer, V Scherini, H Schieler, M Schimassek, M Schimp, F Schlüter, D Schmidt, O Scholten, P Schovánek, FG Schröder, S Schröder, SJ Sciutto, M Scornavacche, RC Shellard, G Sigl, G Silli, O Sima, R Smída, 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 Supík, Z Szadkowski, A Taboada, A Tapia, C Timmermans, P Tobiska, CJ Todero Peixoto, B Tomé, G Torralba Elipe, A Travaini, P Travnicek, C Trimarelli, M Trini, M Tueros, R Ulrich, M Unger, M Urban, L Vaclavek, M Vacula, JF Valdés Galicia, I Valiño, L Valore, A van Vliet, E Varela, B Vargas Cárdenas, A Vásquez-Ramírez, D Veberič, C Ventura, ID Vergara Quispe, V Verzi, J Vicha, L Villaseñor, J Vink, S Vorobiov, H Wahlberg, 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, M Ziolkowski, F Zuccarello
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Very high energy γ-ray emission from two blazars of unknown redshift and upper limits on their distance

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 494:4 (2020) 5590-5602

Authors:

H Abdalla, R Adam, F Aharonian, F Ait Benkhali, EO Angüner, M Arakawa, 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, M Böttcher, C Boisson, J Bolmont, S Bonnefoy, J Bregeon, 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, ID Davids, J Davies, C Deil, J Devin, P deWilt, L Dirson, A Djannati-Ataï, A Dmytriiev, A Donath, V Doroshenko, J Dyks, K Egberts, F Eichhorn, G Emery, J-P Ernenwein, K Feijen, S Fegan, A Fiasson, G Fontaine, S Funk, M Füßling, S Gabici, YA Gallant, G Giavitto, L Giunti, D Glawion, JF Glicenstein, D Gottschall, 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, H Iwasaki, M Jamrozy, D Jankowsky, F Jankowsky, A Jardin-Blicq, V Joshi, I Jung-Richardt, MA Kastendieck, K Katarzyński, M Katsuragawa, 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, E Leser, 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, R Moderski, M Mohamed, L Mohrmann, C Moore, P Morris, E Moulin, J Muller, T Murach, S Nakashima, K Nakashima, M de Naurois, H Ndiyavala, F Niederwanger, J Niemiec, L Oakes, P O’Brien, H Odaka, S Ohm, E de Oña Wilhelmi, M Ostrowski, M Panter, RD Parsons, B Peyaud, Q Piel, S Pita, V Poireau, AP Noel, DA Prokhorov, H Prokoph, G Pühlhofer, M Punch, A Quirrenbach, S Raab, R Rauth, 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, S Saito, DA Sanchez, A Santangelo, M Sasaki, M Scalici, F Schüssler, HM Schutte, U Schwanke, S Schwemmer, M Seglar-Arroyo, M Senniappan, AS Seyffert, N Shafi, K Shiningayamwe, R Simoni, A Sinha, H Sol, A Specovius, S Spencer, M Spir-Jacob, Ł Stawarz, R Steenkamp, C Stegmann, C Steppa, T Takahashi, T Tavernier, AM Taylor, R Terrier, D Tiziani, M Tluczykont, L Tomankova, C Trichard, M Tsirou, N Tsuji, 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, T Vuillaume, Z Wadiasingh, SJ Wagner, J Watson, F Werner, R White, A Wierzcholska, R Yang, H Yoneda, M Zacharias, R Zanin, D Zargaryan, AA Zdziarski, A Zech, SJ Zhu, J Zorn, N Żywucka, M Cerruti
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Radio afterglows of Very High Energy Gamma-ray Bursts

Proceedings of the International Astronomical Union Cambridge University Press (CUP) 16:S363 (2020) 220-223

Authors:

Lauren Rhodes, Alexander van der Horst, Rob Fender
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Relativistic X-ray jets from the black hole X-ray binary MAXI J1820+070

Astrophysical Journal Letters American Astronomical Society 895:2 (2020) L31

Authors:

Mathilde Espinasse, Stephane Corbel, Philip Kaaret, Evangelia Tremou, Giulia Migliori, Richard M Plotkin, Joe Bright, John Tomsick, Anastasios Tzioumis, Robert Fender, Jerome A Orosz, Elena Gallo, Jeroen Homan, Peter G Jonker, James CA Miller-Jones, David M Russell, Sara Motta

Abstract:

The black hole MAXI J1820+070 was discovered during its 2018 outburst and was extensively monitored across the electromagnetic spectrum. Following the detection of relativistic radio jets, we obtained four Chandra X-ray observations taken between 2018 November and 2019 June, along with radio observations conducted with the Very Large Array and MeerKAT arrays. We report the discovery of X-ray sources associated with the radio jets moving at relativistic velocities with a possible deceleration at late times. The broadband spectra of the jets are consistent with synchrotron radiation from particles accelerated up to very high energies (>10 TeV) by shocks produced by the jets interacting with the interstellar medium. The minimal internal energy estimated from the X-ray observations for the jets is ~10^41 erg, significantly larger than the energy calculated from the radio flare alone, suggesting most of the energy is possibly not radiated at small scales but released through late-time interactions.
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