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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Revival of the Magnetar PSR J1622-4950: Observations with MeerKAT, Parkes, XMM-Newton, Swift, Chandra, and NuSTAR
Astrophysical Journal, Volume 856, No. 2, Article 180, Year 2018
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Description
New radio (MeerKAT and Parkes) and X-ray (XMM-Newton, Swift, Chandra, and NuSTAR) observations of PSR J1622-4950 indicate that the magnetar, in a quiescent state since at least early 2015, reactivated between 2017 March 19 and April 5. The radio flux density, while variable, is approximately 100 larger than during its dormant state. The X-ray flux one month after reactivation was at least 800 larger than during quiescence, and has been decaying exponentially on a 111 19 day timescale. This high-flux state, together with a radio-derived rotational ephemeris, enabled for the first time the detection of X-ray pulsations for this magnetar. At 5%, the 0.3-6 keV pulsed fraction is comparable to the smallest observed for magnetars. The overall pulsar geometry inferred from polarized radio emission appears to be broadly consistent with that determined 6-8 years earlier. However, rotating vector model fits suggest that we are now seeing radio emission from a different location in the magnetosphere than previously. This indicates a novel way in which radio emission from magnetars can differ from that of ordinary pulsars. The torque on the neutron star is varying rapidly and unsteadily, as is common for magnetars following outburst, having changed by a factor of 7 within six months of reactivation. © 2018. The American Astronomical Society..
Authors & Co-Authors
Camilo, Fernando
South Africa, Pinelands
Square Kilometre Array, South Africa
Scholz, Paul
Canada, Ottawa
National Research Council Canada
Serylak, MacIej
South Africa, Pinelands
Square Kilometre Array, South Africa
South Africa, Bellville
University of the Western Cape
France, Orleans
Université D'orléans
Buchner, Sarah J.
South Africa, Pinelands
Square Kilometre Array, South Africa
Merryfield, Marcus
Canada, Ottawa
National Research Council Canada
Canada, Victoria
University of Victoria
Kaspi, Victoria M.
Canada, Montreal
Université Mcgill
Archibald, Robert F.
Canada, Montreal
Université Mcgill
Canada, Toronto
University of Toronto
Bailes, Matthew
Australia, Hawthorn
Swinburne University of Technology
Australia, Hawthorn
Arc Centre of Excellence for Gravitational Wave Discovery
Jameson, Andrew
Australia, Hawthorn
Swinburne University of Technology
Van Straten, Willem V.
Australia, Hawthorn
Swinburne University of Technology
New Zealand, Auckland
Auckland University of Technology
Sarkissian, John Mihran
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Reynolds, John E.
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Johnston, Simon
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Hobbs, George B.
Australia, Canberra
Commonwealth Scientific and Industrial Research Organisation
Abbott, Thomas D.
South Africa, Pinelands
Square Kilometre Array, South Africa
Adam, Rémi M.
South Africa, Pinelands
Square Kilometre Array, South Africa
Adams, Grant B.
South Africa, Pinelands
Square Kilometre Array, South Africa
Alberts, T.
South Africa, Pinelands
Square Kilometre Array, South Africa
Andreas, R.
South Africa, Pinelands
Square Kilometre Array, South Africa
Asad, K. M.B.
South Africa, Pinelands
Square Kilometre Array, South Africa
South Africa, Bellville
University of the Western Cape
South Africa, Grahamstown
Rhodes University
Baker, Daniel E.
South Africa, Pretoria
Dirk Baker Consulting
Baloyi, T.
South Africa, Pinelands
Square Kilometre Array, South Africa
Bauermeister, Etienne F.
South Africa, Pinelands
Square Kilometre Array, South Africa
Baxana, T.
South Africa, Pinelands
Square Kilometre Array, South Africa
Bennett, T. G.H.
South Africa, Pinelands
Square Kilometre Array, South Africa
Bernardi, Gianni
South Africa, Grahamstown
Rhodes University
Italy, Bologna
Istituto Di Radioastronomia, Bologna
Booisen, D.
South Africa, Pinelands
Square Kilometre Array, South Africa
Booth, Roy S.
Sweden, Gothenburg
Chalmers University of Technology
Botha, D. H.
South Africa, Stellenbosch
Emss Antennas
Boyana, L.
South Africa, Pinelands
Square Kilometre Array, South Africa
Brederode, Leonardus R.S.
South Africa, Pinelands
Square Kilometre Array, South Africa
Burger, Johan Petrus
South Africa, Pinelands
Square Kilometre Array, South Africa
Cheetham, T.
South Africa, Pinelands
Square Kilometre Array, South Africa
Conradie, J.
South Africa, Stellenbosch
Emss Antennas
Conradie, J. P.
South Africa, Stellenbosch
Emss Antennas
Davidson, David B.
South Africa, Stellenbosch
Stellenbosch University
Bruin, G. De
South Africa, Pinelands
Square Kilometre Array, South Africa
Swardt, B. De
South Africa, Pinelands
Square Kilometre Array, South Africa
Villiers, C. De
South Africa, Pinelands
Square Kilometre Array, South Africa
Villiers, D. De L.De
South Africa, Stellenbosch
Stellenbosch University
Villiers, M. S.De
South Africa, Pinelands
Square Kilometre Array, South Africa
Villiers, W. De
South Africa, Stellenbosch
Emss Antennas
Waal, C. De
South Africa, Pinelands
Square Kilometre Array, South Africa
Dikgale, M. A.
South Africa, Pinelands
Square Kilometre Array, South Africa
Toit, G. Du
South Africa, Stellenbosch
Emss Antennas
Toit, L. J.Du
South Africa, Stellenbosch
Emss Antennas
Esterhuyse, S. W.P.
South Africa, Pinelands
Square Kilometre Array, South Africa
Fanaroff, Bernie L.
South Africa, Pinelands
Square Kilometre Array, South Africa
Fataar, S.
South Africa, Pinelands
Square Kilometre Array, South Africa
Foley, A. R.
South Africa, Pinelands
Square Kilometre Array, South Africa
Foster, Griffin S.
United Kingdom, Oxford
University of Oxford
United States, Berkeley
University of California, Berkeley
Fourie, D. J.
South Africa, Pinelands
Square Kilometre Array, South Africa
Gamatham, Romeo Reginald Gunther
South Africa, Pinelands
Square Kilometre Array, South Africa
Gatsi, T. G.
South Africa, Pinelands
Square Kilometre Array, South Africa
Geschke, Riana Helena
South Africa, Cape Town
University of Cape Town
Goedhart, Sharmila
South Africa, Pinelands
Square Kilometre Array, South Africa
Grobler, Trienko Lups
South Africa, Stellenbosch
Stellenbosch University
Gumede, S. C.
South Africa, Pinelands
Square Kilometre Array, South Africa
Hlakola, Marcus J.
South Africa, Pinelands
Square Kilometre Array, South Africa
Hokwana, A.
South Africa, Pinelands
Square Kilometre Array, South Africa
Hoorn, D. H.
South Africa, Pinelands
Square Kilometre Array, South Africa
Horn, D. M.
South Africa, Pinelands
Square Kilometre Array, South Africa
Horrell, Jasper M.G.
South Africa, Pinelands
Square Kilometre Array, South Africa
Hugo, Benjamin V.
South Africa, Pinelands
Square Kilometre Array, South Africa
South Africa, Grahamstown
Rhodes University
Isaacson, Adam R.
South Africa, Pinelands
Square Kilometre Array, South Africa
Jacobs, Ockert B.
South Africa, Stellenbosch
Emss Antennas
van Rensburg, J. P.Jansen
South Africa, Stellenbosch
Emss Antennas
Jonas, Justin L.
South Africa, Grahamstown
Rhodes University
Jordaan, B.
South Africa, Pinelands
Square Kilometre Array, South Africa
South Africa, Stellenbosch
Emss Antennas
Joubert, Anton F.
South Africa, Pinelands
Square Kilometre Array, South Africa
Joubert, F.
South Africa, Pinelands
Square Kilometre Array, South Africa
Józsa, Gyula I.G.
South Africa, Pinelands
Square Kilometre Array, South Africa
South Africa, Grahamstown
Rhodes University
Germany, Bonn
Universität Bonn
Julie, Roufurd P.M.
South Africa, Pinelands
Square Kilometre Array, South Africa
Julius, C. C.
South Africa, Pinelands
Square Kilometre Array, South Africa
Kapp, Francois B.
South Africa, Pinelands
Square Kilometre Array, South Africa
Karastergiou, Aris
South Africa, Bellville
University of the Western Cape
South Africa, Grahamstown
Rhodes University
United Kingdom, Oxford
University of Oxford
Karels, F.
South Africa, Pinelands
Square Kilometre Array, South Africa
Kariseb, MacCalvin
South Africa, Pinelands
Square Kilometre Array, South Africa
Karuppusamy, Ramesh
Germany, Bonn
Max Planck Institute for Radio Astronomy
Kasper, V. A.
South Africa, Pinelands
Square Kilometre Array, South Africa
Knox-Davies, Evan C.
South Africa, Stellenbosch
Emss Antennas
Koch, D.
South Africa, Pinelands
Square Kilometre Array, South Africa
Kotzé, Paul P.A.
South Africa, Pinelands
Square Kilometre Array, South Africa
Krebs, A.
South Africa, Stellenbosch
Emss Antennas
Kriek, N.
South Africa, Pinelands
Square Kilometre Array, South Africa
Kriel, Henno K.
South Africa, Pinelands
Square Kilometre Array, South Africa
Kusel, Thomas W.
South Africa, Pinelands
Square Kilometre Array, South Africa
Lamoor, S.
South Africa, Pinelands
Square Kilometre Array, South Africa
Lehmensiek, Robert
South Africa, Stellenbosch
Emss Antennas
Liebenberg, D.
South Africa, Pinelands
Square Kilometre Array, South Africa
Liebenberg, I. J.V.
South Africa, Stellenbosch
Emss Antennas
Lord, R. T.
South Africa, Pinelands
Square Kilometre Array, South Africa
Lunsky, B. M.
South Africa, Pinelands
Square Kilometre Array, South Africa
Mabombo, N.
South Africa, Pinelands
Square Kilometre Array, South Africa
MacDonald, Timothy
South Africa, Stellenbosch
Emss Antennas
Macfarlane, P. S.
South Africa, Pinelands
Square Kilometre Array, South Africa
Madisa, K.
South Africa, Pinelands
Square Kilometre Array, South Africa
Mafhungo, L.
South Africa, Pinelands
Square Kilometre Array, South Africa
Magnus, Lindsay G.
South Africa, Pinelands
Square Kilometre Array, South Africa
Magozore, C. M.
South Africa, Pinelands
Square Kilometre Array, South Africa
Mahgoub, Omer
South Africa, Pinelands
Square Kilometre Array, South Africa
Main, J. P.L.
South Africa, Pinelands
Square Kilometre Array, South Africa
Makhathini, Sphesihle
South Africa, Pinelands
Square Kilometre Array, South Africa
South Africa, Grahamstown
Rhodes University
Malan, Jocias A.
South Africa, Pinelands
Square Kilometre Array, South Africa
Manley, Jason R.
South Africa, Pinelands
Square Kilometre Array, South Africa
Marais, L.
South Africa, Stellenbosch
Emss Antennas
Marais, Neilen
South Africa, Pinelands
Square Kilometre Array, South Africa
Marais, Sarel J.
South Africa, Stellenbosch
Emss Antennas
Maree, Matthys D.J.
South Africa, Pinelands
Square Kilometre Array, South Africa
Martens, Andrew
South Africa, Pinelands
Square Kilometre Array, South Africa
Matshawule, Siyambonga D.
South Africa, Bellville
University of the Western Cape
Mauch, Thomas
South Africa, Pinelands
Square Kilometre Array, South Africa
Merry, Bruce C.
South Africa, Pinelands
Square Kilometre Array, South Africa
Millenaar, Robert P.
South Africa, Pinelands
Square Kilometre Array, South Africa
Mnyandu, N.
South Africa, Pinelands
Square Kilometre Array, South Africa
Moeng, I. P.T.
South Africa, Pinelands
Square Kilometre Array, South Africa
Mokone, O. J.
South Africa, Pinelands
Square Kilometre Array, South Africa
Monama, T. E.
South Africa, Pinelands
Square Kilometre Array, South Africa
Moss, Vanessa A.
South Africa, Pinelands
Square Kilometre Array, South Africa
Mphego, M. C.
South Africa, Pinelands
Square Kilometre Array, South Africa
New, Wesley S.
South Africa, Pinelands
Square Kilometre Array, South Africa
Ngcebetsha, B.
South Africa, Pinelands
Square Kilometre Array, South Africa
South Africa, Grahamstown
Rhodes University
Ngoasheng, K. J.
South Africa, Pinelands
Square Kilometre Array, South Africa
Ockards, M. T.O.
South Africa, Pinelands
Square Kilometre Array, South Africa
Oozeer, N.
South Africa, Pinelands
Square Kilometre Array, South Africa
South Africa, Potchefstroom
North-west University
South Africa, Muizenberg
African Institute for Mathematical Sciences
Otto, Abraham J.
South Africa, Pinelands
Square Kilometre Array, South Africa
Passmoor, Sean S.
South Africa, Pinelands
Square Kilometre Array, South Africa
Patel, Amish A.
South Africa, Pinelands
Square Kilometre Array, South Africa
Peens-Hough, Adriaan
South Africa, Pinelands
Square Kilometre Array, South Africa
Prozesky, P.
South Africa, Pinelands
Square Kilometre Array, South Africa
Ramaila, Athanaseus J.T.
South Africa, Pinelands
Square Kilometre Array, South Africa
Rammala, I.
South Africa, Pinelands
Square Kilometre Array, South Africa
Ramudzuli, Zwivhuya Romeo
South Africa, Pinelands
Square Kilometre Array, South Africa
Ratcliffe, Simon M.
South Africa, Pinelands
Square Kilometre Array, South Africa
Reader, Howard Charles
South Africa, Stellenbosch
Stellenbosch University
South Africa, Stellenbosch
Mesa Solutions Pty Ltd.
Renil, Rosly
South Africa, Pinelands
Square Kilometre Array, South Africa
Richter, Laura L.
South Africa, Pinelands
Square Kilometre Array, South Africa
South Africa, Grahamstown
Rhodes University
Robyntjies, A.
South Africa, Pinelands
Square Kilometre Array, South Africa
Rosekrans, D.
South Africa, Pinelands
Square Kilometre Array, South Africa
Rust, Alec N.
South Africa, Pinelands
Square Kilometre Array, South Africa
Salie, S.
South Africa, Pinelands
Square Kilometre Array, South Africa
Sambu, N.
South Africa, Pinelands
Square Kilometre Array, South Africa
Schollar, C. T.G.
South Africa, Pinelands
Square Kilometre Array, South Africa
Schwardt, Ludwig C.
South Africa, Pinelands
Square Kilometre Array, South Africa
Seranyane, S.
South Africa, Pinelands
Square Kilometre Array, South Africa
Siebrits, Renier
South Africa, Pinelands
Square Kilometre Array, South Africa
Sirothia, Sandeep K.
South Africa, Pinelands
Square Kilometre Array, South Africa
South Africa, Grahamstown
Rhodes University
Slabber, Martin J.
South Africa, Pinelands
Square Kilometre Array, South Africa
Smirnov, Oleg M.
South Africa, Pinelands
Square Kilometre Array, South Africa
South Africa, Grahamstown
Rhodes University
Sofeya, L.
South Africa, Pinelands
Square Kilometre Array, South Africa
Spann, R.
South Africa, Pinelands
Square Kilometre Array, South Africa
Stappers, Benjamin W.
United Kingdom, Manchester
The University of Manchester
Swart, Paul S.
South Africa, Pinelands
Square Kilometre Array, South Africa
Taljaard, B.
South Africa, Pinelands
Square Kilometre Array, South Africa
Tasse, Cyril
South Africa, Grahamstown
Rhodes University
France, Paris
Université Psl
Taylor, Gregory B.
South Africa, Pinelands
Square Kilometre Array, South Africa
Theron, Isak Petrus
South Africa, Stellenbosch
Emss Antennas
Thondikulam, Venkatasubramani L.
South Africa, Pinelands
Square Kilometre Array, South Africa
Thorat, Kshitij
South Africa, Pinelands
Square Kilometre Array, South Africa
South Africa, Grahamstown
Rhodes University
Tiplady, Adrian J.
South Africa, Pinelands
Square Kilometre Array, South Africa
Toruvanda, O.
South Africa, Pinelands
Square Kilometre Array, South Africa
Byl, A. Van Der
South Africa, Pinelands
Square Kilometre Array, South Africa
Merwe, C. Van Der
South Africa, Pinelands
Square Kilometre Array, South Africa
Merwe, Peet Van Der
South Africa, Stellenbosch
Mesa Solutions Pty Ltd.
Tonder, V. Van
South Africa, Pinelands
Square Kilometre Array, South Africa
Walker, Andre L.
South Africa, Pinelands
Square Kilometre Array, South Africa
Wallace, Bruce H.
South Africa, Pinelands
Square Kilometre Array, South Africa
Welz, Marc G.
South Africa, Pinelands
Square Kilometre Array, South Africa
Williams, L. P.
South Africa, Pinelands
Square Kilometre Array, South Africa
Young, N. J.
South Africa, Pinelands
Square Kilometre Array, South Africa
Statistics
Citations: 114
Authors: 170
Affiliations: 27
Identifiers
Doi:
10.3847/1538-4357/aab35a
ISSN:
0004637X
Research Areas
Environmental