Strong low-frequency radio flaring from Cygnus X-3 observed with LOFAR

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 504:1 (2021) 1482-1494

Authors:

JW Broderick, TD Russell, RP Fender, SA Trushkin, DA Green, J Chauhan, NA Nizhelskij, PG Tsybulev, NN Bursov, AV Shevchenko, GG Pooley, DRA Williams, JS Bright, A Rowlinson, S Corbel

Particle acceleration in radio galaxies with flickering jets: GeV electrons to ultrahigh energy cosmic rays

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 503:4 (2021) 5948-5964

Authors:

James H Matthews, Andrew M Taylor

The Thousand-Pulsar-Array programme on MeerKAT - V. Scattering analysis of single-component pulsars

Monthly Notices of the Royal Astronomical Society Oxford University Press 504:1 (2021) 1115-1128

Authors:

Ls Oswald, A Karastergiou, B Posselt, S Johnston, M Bailes, S Buchner, M Geyer, Mj Keith, M Kramer, A Parthasarathy, Dj Reardon, M Serylak, Rm Shannon, R Spiewak, W van Straten, V Venkatraman Krishnan

Abstract:

We have measured the scattering time-scale, τ, and the scattering spectral index, α, for 84 single-component pulsars. Observations were carried out with the MeerKAT telescope as part of the Thousand-Pulsar-Array programme in the MeerTime project at frequencies between 0.895 and 1.670 GHz. Our results give a distribution of values for α (defined in terms of τ and frequency ν as τ ∝ ν−α) for which, upon fitting a Gaussian, we obtain a mean and standard deviation of 〈α〉 = 4.0 ± 0.6. This is due to our identification of possible causes of inaccurate measurement of τ, which, if not filtered out of modelling results, tend to lead to underestimation of α. The pulsars in our sample have large dispersion measures and are therefore likely to be distant. We find that a model using an isotropic scatter broadening function is consistent with the data, likely due to the averaging effect of multiple scattering screens along the line of sight. Our sample of scattering parameters provides a strong data set upon which we can build to test more complex and time-dependent scattering phenomena, such as extreme scattering events.

Strong low-frequency radio flaring from Cygnus X-3 observed with LOFAR

(2021)

Authors:

JW Broderick, TD Russell, RP Fender, SA Trushkin, DA Green, J Chauhan, NA Nizhelskij, PG Tsybulev, NN Bursov, AV Shevchenko, GG Pooley, DRA Williams, JS Bright, A Rowlinson, S Corbel

Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

The Astrophysical Journal Letters American Astronomical Society 911:1 (2021) l11

Authors:

The EHT MWL Science Working Group, JC Algaba, J Anczarski, K Asada, M Baloković, S Chandra, Y-Z Cui, AD Falcone, M Giroletti, C Goddi, K Hada, D Haggard, S Jorstad, A Kaur, T Kawashima, G Keating, J-Y Kim, M Kino, S Komossa, EV Kravchenko, TP Krichbaum, S-S Lee, R-S Lu, M Lucchini, S Markoff, J Neilsen, MA Nowak, J Park, G Principe, V Ramakrishnan, MT Reynolds, M Sasada, SS Savchenko, KE Williamson, The Event Horizon Telescope Collaboration, Kazunori Akiyama, Antxon Alberdi, Walter Alef, Richard Anantua, Rebecca Azulay, Anne-Kathrin Baczko, David Ball, John Barrett, Dan Bintley, Bradford A Benson, Lindy Blackburn, Raymond Blundell, Wilfred Boland, Katherine L Bouman, Geoffrey C Bower, Hope Boyce, Michael Bremer, Christiaan D Brinkerink, Roger Brissenden, Silke Britzen, Avery E Broderick, Dominique Broguiere, Thomas Bronzwaer, Do-Young Byun, John E Carlstrom, Andrew Chael, Chi-kwan Chan, Shami Chatterjee, Koushik Chatterjee, Ming-Tang Chen, Yongjun Chen, Paul M Chesler, Ilje Cho, Pierre Christian, John E Conway, James M Cordes, Thomas M Crawford, Geoffrey B Crew, Alejandro Cruz-Osorio, Jordy Davelaar, Mariafelicia De Laurentis, Roger Deane, Jessica Dempsey, Gregory Desvignes, Jason Dexter, Sheperd S Doeleman, Ralph P Eatough, Heino Falcke, Joseph Farah, Vincent L Fish, Ed Fomalont, H Alyson Ford, Raquel Fraga-Encinas, Per Friberg, Christian M Fromm, Antonio Fuentes, Peter Galison, Charles F Gammie, Roberto García, Olivier Gentaz, Boris Georgiev, Roman Gold, José L Gómez, Arturo I Gómez-Ruiz, Minfeng Gu, Mark Gurwell, Michael H Hecht, Ronald Hesper, Luis C Ho, Paul Ho, Mareki Honma, Chih-Wei L Huang, Lei Huang, David H Hughes, Shiro Ikeda, Makoto Inoue, Sara Issaoun, David J James, Buell T Jannuzi, Michael Janssen, Britton Jeter, Wu Jiang, Alejandra Jiménez-Rosales, Michael D Johnson, Taehyun Jung, Mansour Karami, Ramesh Karuppusamy, Mark Kettenis, Dong-Jin Kim, Jongsoo Kim, Junhan Kim, Jun Yi Koay, Yutaro Kofuji, Patrick M Koch, Shoko Koyama, Michael Kramer, Carsten Kramer, Cheng-Yu Kuo, Tod R Lauer, Aviad Levis, Yan-Rong Li, Zhiyuan Li, Michael Lindqvist, Rocco Lico, Greg Lindahl, Jun Liu, Kuo Liu, Elisabetta Liuzzo, Wen-Ping Lo, Andrei P Lobanov, Laurent Loinard, Colin Lonsdale, Nicholas R MacDonald, Jirong Mao, Nicola Marchili, Daniel P Marrone, Alan P Marscher, Iván Martí-Vidal, Satoki Matsushita, Lynn D Matthews, Lia Medeiros, Karl M Menten, Izumi Mizuno, Yosuke Mizuno, James M Moran, Kotaro Moriyama, Monika Moscibrodzka, Cornelia Müller, Gibwa Musoke, Alejandro Mus Mejías, Hiroshi Nagai, Neil M Nagar, Masanori Nakamura, Ramesh Narayan, Gopal Narayanan, Iniyan Natarajan, Antonios Nathanail, Roberto Neri, Chunchong Ni, Aristeidis Noutsos, Hiroki Okino, Héctor Olivares, Gisela N Ortiz-León, Tomoaki Oyama, Feryal Özel, Daniel CM Palumbo, Nimesh Patel, Ue-Li Pen, Dominic W Pesce, Vincent Piétu, Richard Plambeck, Aleksandar PopStefanija, Oliver Porth, Felix M Pötzl, Ben Prather, Jorge A Preciado-López, Dimitrios Psaltis, Hung-Yi Pu, Ramprasad Rao, Mark G Rawlings, Alexander W Raymond, Luciano Rezzolla, Angelo Ricarte, Bart Ripperda, Freek Roelofs, Alan Rogers, Eduardo Ros, Mel Rose, Arash Roshanineshat, Helge Rottmann, Alan L Roy, Chet Ruszczyk, Kazi LJ Rygl, Salvador Sánchez, David Sánchez-Arguelles, Tuomas Savolainen, F Peter Schloerb, Karl-Friedrich Schuster, Lijing Shao, Zhiqiang Shen, Des Small, Bong Won Sohn, Jason SooHoo, He Sun, Fumie Tazaki, Alexandra J Tetarenko, Paul Tiede, Remo PJ Tilanus, Michael Titus, Kenji Toma, Pablo Torne, Tyler Trent, Efthalia Traianou, Sascha Trippe, Ilse van Bemmel, Huib Jan van Langevelde, Daniel R van Rossum, Jan Wagner, Derek Ward-Thompson, John Wardle, Jonathan Weintroub, Norbert Wex, Robert Wharton, Maciek Wielgus, George N Wong, Qingwen Wu, Doosoo Yoon, André Young, Ken Young, Ziri Younsi, Feng Yuan, Ye-Fei Yuan, J Anton Zensus, Guang-Yao Zhao, Shan-Shan Zhao, The Fermi Large Area Telescope Collaboration, G Principe, M Giroletti, F D’Ammando, M Orienti, HESS Collaboration, H Abdalla, R Adam, 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, F Brun, P Brun, M Bryan, M Büchele, T Bulik, T Bylund, S Caroff, A Carosi, S Casanova, T Chand, A Chen, G Cotter, M Curyło, J Damascene Mbarubucyeye, ID Davids, J Davies, C Deil, J Devin, P deWilt, L Dirson, A Djannati-Ataï, A Dmytriiev, A Donath, V Doroshenko, 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, 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, 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, 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, R Moderski, M Mohamed, L Mohrmann, A Montanari, C Moore, P Morris, E Moulin, J Muller, T Murach, K Nakashima, A Nayerhoda, M de Naurois, H Ndiyavala, F Niederwanger, J Niemiec, L Oakes, P O’Brien, H Odaka, S Ohm, L Olivera-Nieto, E de Ona Wilhelmi, M Ostrowski, M Panter, S Panny, 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, 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, DA Sanchez, A Santangelo, M Sasaki, M Scalici, 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, L Sun, R Steenkamp, C Stegmann, S Steinmassl, C Steppa, T Takahashi, T Tavernier, AM Taylor, R Terrier, D Tiziani, M Tluczykont, L Tomankova, C Trichard, 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, T Vuillaume, 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, MAGIC Collaboration, VA Acciari, S Ansoldi, LA Antonelli, A Arbet Engels, M Artero, K Asano, D Baack, A Babić, A Baquero, U Barres de Almeida, JA Barrio, J Becerra González, W Bednarek, L Bellizzi, E Bernardini, M Bernardos, A Berti, J Besenrieder, W Bhattacharyya, C Bigongiari, A Biland, O Blanch, G Bonnoli, Ž Bošnjak, G Busetto, R Carosi, G Ceribella, M Cerruti, Y Chai, A Chilingarian, S Cikota, SM Colak, E Colombo, JL Contreras, J Cortina, S Covino, G D’Amico, V D’Elia, P Da Vela, F Dazzi, A De Angelis, B De Lotto, M Delfino, J Delgado, C Delgado Mendez, D Depaoli, F Di Pierro, L Di Venere, E Do Souto Espiñeira, D Dominis Prester, A Donini, D Dorner, M Doro, D Elsaesser, V Fallah Ramazani, A Fattorini, G Ferrara, MV Fonseca, L Font, C Fruck, S Fukami, RJ García López, M Garczarczyk, S Gasparyan, M Gaug, N Giglietto, F Giordano, P Gliwny, N Godinović, JG Green, D Green, D Hadasch, A Hahn, L Heckmann, J Herrera, J Hoang, D Hrupec, M Hütten, T Inada, S Inoue, K Ishio, Y Iwamura, I Jiménez, J Jormanainen, L Jouvin, Y Kajiwara, M Karjalainen, D Kerszberg, Y Kobayashi, H Kubo, J Kushida, A Lamastra, D Lelas, F Leone, E Lindfors, S Lombardi, F Longo, R López-Coto, M López-Moya, A López-Oramas, S Loporchio, B Machado de Oliveira Fraga, C Maggio, P Majumdar, M Makariev, M Mallamaci, G Maneva, M Manganaro, K Mannheim, L Maraschi, M Mariotti, M Martínez, D Mazin, S Menchiari, S Mender, S Mićanović, D Miceli, T Miener, M Minev, JM Miranda, R Mirzoyan, E Molina, A Moralejo, D Morcuende, V Moreno, E Moretti, V Neustroev, C Nigro, K Nilsson, K Nishijima, K Noda, S Nozaki, Y Ohtani, T Oka, J Otero-Santos, S Paiano, M Palatiello, D Paneque, R Paoletti, JM Paredes, L Pavletić, P Peñil, C Perennes, M Persic, PG Prada Moroni, E Prandini, C Priyadarshi, I Puljak, W Rhode, M Ribó, J Rico, C Righi, A Rugliancich, L Saha, N Sahakyan, T Saito, S Sakurai, K Satalecka, FG Saturni, B Schleicher, K Schmidt, T Schweizer, J Sitarek, I Šnidarić, D Sobczynska, A Spolon, A Stamerra, D Strom, M Strzys, Y Suda, T Surić, M Takahashi, F Tavecchio, P Temnikov, T Terzić, M Teshima, L Tosti, S Truzzi, A Tutone, S Ubach, J van Scherpenberg, G Vanzo, M Vazquez Acosta, S Ventura, V Verguilov, CF Vigorito, V Vitale, I Vovk, M Will, C Wunderlich, D Zarić, VERITAS Collaboration, CB Adams, W Benbow, A Brill, M Capasso, JL Christiansen, AJ Chromey, MK Daniel, M Errando, KA Farrell, Q Feng, JP Finley, L Fortson, A Furniss, A Gent, C Giuri, T Hassan, O Hervet, J Holder, G Hughes, TB Humensky, W Jin, P Kaaret, M Kertzman, D Kieda, S Kumar, MJ Lang, M Lundy, G Maier, P Moriarty, R Mukherjee, D Nieto, M Nievas-Rosillo, S O’Brien, RA Ong, AN Otte, S Patel, K Pfrang, M Pohl, RR Prado, E Pueschel, J Quinn, K Ragan, PT Reynolds, D Ribeiro, GT Richards, E Roache, C Rulten, JL Ryan, M Santander, GH Sembroski, R Shang, A Weinstein, DA Williams, TJ Williamson, EAVN Collaboration, Tomoya Hirota, Lang Cui, Kotaro Niinuma, Hyunwook Ro, Nobuyuki Sakai, Satoko Sawada-Satoh, Kiyoaki Wajima, Na Wang, Xiang Liu, Yoshinori Yonekura