The Square Kilometre Array (SKA)

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MIGHTEE-HI: The relation between the HI gas in galaxies and the cosmic web

(2022)

Authors:

Madalina N Tudorache, MJ Jarvis, I Heywood, AA Ponomareva, N Maddox, BS Frank, NJ Adams, RAA Bowler, IH Whittam, M Baes, H Pan, SHA Rajohnson, F Sinigaglia, K Spekkens
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Long term radio monitoring of the neutron star X-ray binary Swift J1858.6-0814

(2022)

Authors:

L Rhodes, RP Fender, SE Motta, J van den Eijnden, DRA Williams, JS Bright, GR Sivakoff
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Time-resolved hadronic particle acceleration in the recurrent nova RS Ophiuchi.

Science (New York, N.Y.) 376:6588 (2022) 77-80

Authors:

H.E.S.S. Collaboration*†, F Aharonian, F Ait Benkhali, EO Angüner, H Ashkar, M Backes, V Baghmanyan, V Barbosa Martins, R Batzofin, 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, S Caroff, S Casanova, M Cerruti, T Chand, A Chen, G Cotter, J Damascene Mbarubucyeye, A Djannati-Ataï, A Dmytriiev, V Doroshenko, C Duffy, K Egberts, J-P Ernenwein, S Fegan, K Feijen, A Fiasson, G Fichet de Clairfontaine, G Fontaine, M Füßling, S Funk, S Gabici, YA Gallant, S Ghafourizadeh, G Giavitto, L Giunti, D Glawion, JF Glicenstein, M-H Grondin, G Hermann, JA Hinton, M Hörbe, W Hofmann, C Hoischen, TL Holch, M Holler, D Horns, Zhiqiu Huang, M Jamrozy, F Jankowsky, I Jung-Richardt, E Kasai, K Katarzyński, U Katz, D Khangulyan, B Khélifi, S Klepser, W Kluźniak, Nu Komin, R Konno, K Kosack, D Kostunin, S Le Stum, A Lemière, M Lemoine-Goumard, J-P Lenain, F Leuschner, T Lohse, A Luashvili, I Lypova, J Mackey, D Malyshev, D Malyshev, V Marandon, P Marchegiani, A Marcowith, G Martí-Devesa, R Marx, G Maurin, M Meyer, A Mitchell, R Moderski, L Mohrmann, A Montanari, E Moulin, J Muller, T Murach, K Nakashima, M de Naurois, A Nayerhoda, J Niemiec, A Priyana Noel, P O'Brien, S Ohm, L Olivera-Nieto, E de Ona Wilhelmi, M Ostrowski, S Panny, M Panter, RD Parsons, G Peron, S Pita, V Poireau, DA Prokhorov, H Prokoph, G Pühlhofer, M Punch, A Quirrenbach, P Reichherzer, A Reimer, O Reimer, M Renaud, B Reville, F Rieger, G Rowell, B Rudak, H Rueda Ricarte, E Ruiz-Velasco, V Sahakian, S Sailer, H Salzmann, DA Sanchez, A Santangelo, M Sasaki, J Schäfer, F Schüssler, HM Schutte, U Schwanke, M Senniappan, JNS Shapopi, R Simoni, A Sinha, H Sol, A Specovius, S Spencer, Ł Stawarz, S Steinmassl, C Steppa, T Takahashi, T Tanaka, AM Taylor, R Terrier, C Thorpe-Morgan, M Tsirou, N Tsuji, R Tuffs, Y Uchiyama, T Unbehaun, C van Eldik, B van Soelen, J Veh, C Venter, J Vink, SJ Wagner, F Werner, R White, A Wierzcholska, Yu Wun Wong, A Yusafzai, M Zacharias, D Zargaryan, AA Zdziarski, A Zech, SJ Zhu, S Zouari, N Żywucka

Abstract:

Recurrent novae are repeating thermonuclear explosions in the outer layers of white dwarfs, due to the accretion of fresh material from a binary companion. The shock generated when ejected material slams into the companion star's wind can accelerate particles. We report very-high-energy (VHE; [Formula: see text]) gamma rays from the recurrent nova RS Ophiuchi, up to 1 month after its 2021 outburst, observed using the High Energy Stereoscopic System (H.E.S.S.). The temporal profile of VHE emission is similar to that of lower-energy giga-electron volt emission, indicating a common origin, with a 2-day delay in peak flux. These observations constrain models of time-dependent particle energization, favoring a hadronic emission scenario over the leptonic alternative. Shocks in dense winds provide favorable environments for efficient acceleration of cosmic rays to very high energies.
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Search and identification of transient and variable radio sources using MeerKAT observations: a case study on the MAXI J1820+070 field

(2022)

Authors:

A Rowlinson, J Meijn, J Bright, AJ van der Horst, S Chastain, S Fijma, R Fender, I Heywood, RAMJ Wijers, PA Woudt, A Andersson, GR Sivakoff, E Tremou, LN Driessen
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Long term radio and X-ray evolution of the magnetar Swift J1818.0-1607

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 512:2 (2022) 1687-1695

Authors:

KM Rajwade, BW Stappers, AG Lyne, B Shaw, MB Mickaliger, K Liu, M Kramer, G Desvignes, R Karuppusamy, T Enoto, T Güver, Chin-Ping Hu, MP Surnis
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