Pulsars, transients and relativistic astrophysics

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Revival of the Magnetar PSR J1622-4950: Observations with MeerKAT, Parkes, XMM-Newton, Swift, Chandra, and NuSTAR

ASTROPHYSICAL JOURNAL 856:2 (2018) ARTN 180

Authors:

F Camilo, P Scholz, M Serylak, S Buchner, M Merryfield, VM Kaspi, RF Archibald, M Bailes, A Jameson, W van Straten, J Sarkissian, JE Reynolds, S Johnston, G Hobbs, TD Abbott, RM Adam, GB Adams, T Alberts, R Andreas, KMB Asad, DE Baker, T Baloyi, EF Bauermeister, T Baxana, TGH Bennett, G Bernardi, D Booisen, RS Booth, DH Bothar, L Boyana, LRS Brederode, JP Burger, T Cheetham, J Conradie, JP Conradie, DB Davidson, G De Bruin, B de Swardt, C de Villiers, DIL de Villiers, MS de Villiers, W de Villiers, C De Waal, MA Dikgale, G du Toit, LJ du Toit, SWP Esterhuysel, B Fanaroff, S Fataari, AR Foley, G Foster, D Fourier, R Gamatham, T Gatsi, R Geschke, S Goedhart, TL Grobler, SC Gumede, MJ Hlakola, A Hokwana, DH Hoorn, D Horn, J Horrell, B Hugo, A Isaacson, O Jacobs, JPJ van Rensburg, JL Jonas, B Jordaan, A Joubert, F Joubert, GIG Jozsa, R Julie, CC Julius, F Kapp, A Karastergiou, F Karels, M Kariseb, R Karuppusamy, V Kasper, EC Knox-Davies, D Koch, PPA Kotze, A Krebs, N Krick, H Kriel, T Kusel, S Lamoor, R Lehmensiek, D Liebenberg, I Liebenberg, RT Lord, B Lunsky, N Mabombo, T Macdonald, P Macfarlane, K Madisa, L Mafhungo, LG Magnus, C Magozore, O Mahgoub, JPL Main, S Makhathini, JA Malan, P Malgas, JR Manley, M Manzini, L Marais, N Marais, SJ Marais, M Maree, A Martens, SD Matshawule, N Matthysen, T Mauch, LD Mc Nally, B Merry, RP Millenaar, C Mjikelo, N Mikhabela, N Mnyandu, IT Moeng, OJ Mokone, TE Monama, K Montshiwa, V Moss, M Mphego, W New, B Ngcebetsha, K Ngoasheng, H Niehaus, P Ntuli, A Nzama, F Obies, M Obrocka, MT Ockards, C Olyn, N Oozeer, AJ Otto, Y Padayachee, S Passmoor, AA Patel, S Paula, A Peens-Hough, B Pholoholo, P Prozesky, S Rakoma, AJT Ramaila, I Rammala, ZR Ramudzuli, M Rasivhaga, S Ratcliffe, HC Reader, R Renil, L Richter, A Robyntjies, D Rosekrans, A Rust, S Salle, N Sambu, CTG Schollar, L Schwardt, S Seranyane, G Sethosa, C Sharper, R Siebrits, SK Sirothia, MJ Slabber, O Smirnov, S Smith, L Sofeya, N Songqumase, R Spann, B Stappers, D Steyn, TJ Steyn, R Strong, A Struthers, C Stuart, P Sunnylall, PS Swart, B Taljaard, C Tasse, G Taylor, IP Theron, V Thondikulam, K Thorat, A Tiplady, O Toruvanda, J van Aardt, T van Balla, L van den Heever, A van der Byl, C van der Merwe, P van der Merwe, PC van Niekerk, R van Rooyen, JP van Staden, V van Tonder, R van Wyk, I Wait, AL Walker, B Wallace, M Welz, LP Williams, B Xaia, N Young, S Zitha
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SNe 2013K and 2013am: observed and physical properties of two slow, normal Type IIP events

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 475:2 (2018) 1937-1959

Authors:

L Tomasella, E Cappellaro, ML Pumo, A Jerkstrand, S Benetti, N Elias-Rosa, M Fraser, C Inserra, A Pastorello, M Turatto, JP Anderson, L Galbany, CP Gutiérrez, E Kankare, G Pignata, G Terreran, S Valenti, C Barbarino, FE Bauer, MT Botticella, T-W Chen, A Gal-Yam, A Harutyunyan, DA Howell, K Maguire, A Morales Garoffolo, P Ochner, SJ Smartt, S Schulze, DR Young, L Zampieri
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LOFAR 150-MHz observations of SS 433 and W 50

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 475:4 (2018) 5360-5377

Authors:

JW Broderick, RP Fender, JCA Miller-Jones, SA Trushkin, AJ Stewart, GE Anderson, TD Staley, KM Blundell, M Pietka, S Markoff, A Rowlinson, JD Swinbank, AJ van der Horst, ME Bell, RP Breton, D Carbone, S Corbel, J Eisloeffel, H Falcke, J-M Griessmeier, JWT Hessels, VI Kondratiev, CJ Law, GJ Molenaar, M Serylak, BW Stappers, J van Leeuwen, RAMJ Wijers, R Wijnands, MW Wise, P Zarka
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RFI flagging implications for short-duration transients

Astronomy and Computing Elsevier 23 (2018) 103-114

Authors:

Y Cendes, P Prasad, A Rowlinson, RAMJ Wijers, JD Swinbank, CJ Law, AJ van der Horst, D Carbone, JW Broderick, TD Staley, AJ Stewart, F Huizinga, G Molenaar, A Alexov, ME Bell, T Coenen, S Corbel, J Eislöffel, R Fender, J-M Grießmeier, P Jonker, M Kramer, M Kuniyoshi, M Pietka, B Stappers, M Wise, P Zarka
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Isotropic-Nematic Phase Transitions in Gravitational Systems. II. Higher Order Multipoles

ASTROPHYSICAL JOURNAL American Astronomical Society 856:2 (2018) ARTN 113

Authors:

Adam Takacs, Bence Kocsis

Abstract:

The gravitational interaction among bodies orbiting in a spherical potential leads to the rapid relaxation of the orbital planes' distribution, a process called vector resonant relaxation. We examine the statistical equilibrium of this process for a system of bodies with similar semimajor axes and eccentricities. We extend the previous model of Roupas et al. (2017) by accounting for the multipole moments beyond the quadrupole, which dominate the interaction for radially overlapping orbits. Nevertheless, we find no qualitative differences between the behavior of the system with respect to the model restricted to the quadrupole interaction. The equilibrium distribution resembles a counterrotating disk at low temperature and a spherical structure at high temperature. The system exhibits a first order phase transition between the disk and the spherical phase in the canonical ensemble if the total angular momentum is below a critical value. We find that the phase transition erases the high order multipoles, i.e. small-scale structure in angular momentum space, most efficiently. The system admits a maximum entropy and a maximum energy, which lead to the existence of negative temperature equilibria.
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