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

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

Camilo, F. (author)

Scholz, P. (author): National Research Council Canada

Serylak, M. (author): Station de Radioastronomie de Nançay,University of the Western Cape

Buchner, S. (author)

Merryfield, M. (author): University of Victoria,National Research Council Canada

Kaspi, V. M. (author): McGill University

Archibald, R. F. (author): McGill University,University of Toronto

Bailes, M. (author): Swinburne University of Technology

Jameson, A. (author): Swinburne University of Technology

Straten, W. Van (author): Auckland University of Technology,Swinburne University of Technology

Sarkissian, J. (author): Commonwealth Scientific and Industrial Research Organisation (CSIRO)

Reynolds, J.E. (author): Commonwealth Scientific and Industrial Research Organisation (CSIRO)

Johnston, S. (author): Commonwealth Scientific and Industrial Research Organisation (CSIRO)

Hobbs, G. (author): Commonwealth Scientific and Industrial Research Organisation (CSIRO)

Abbott, T. D. (author)

Adam, R. M. (author)

Adams, G. B. (author)

Alberts, T. (author)

Andreas, R. (author)

Asad, K. M.B. (author): University of the Western Cape,Rhodes University

Baker, D. E. (author)

Baloyi, T. (author)

Bauermeister, E. F. (author)

Baxana, T. (author)

Bennett, T. G.H. (author)

Bernardi, G. (author): Istituto di Radioastronomia,Rhodes University

Booisen, D. (author)

Booth, Roy, 1938 (author): Chalmers tekniska högskola,Chalmers University of Technology

Botha, D. H. (author)

Boyana, L. (author)

Brederode, L. R.S. (author)

Burger, J. P. (author)

Cheetham, T. (author)

Conradie, J. (author)

Conradie, J. P. (author)

Davidson, D. B. (author): Universiteit Stellenbosch,Stellenbosch University

Bruin, G. De (author)

Swardt, B. De (author)

Villiers, C. De (author)

Villiers, D. I.L.De (author): Universiteit Stellenbosch,Stellenbosch University

Villiers, M. S.De (author)

Villiers, W. De (author)

Waal, C. De (author)

Dikgale, M. A. (author)

Toit, G. Du (author)

Toit, L. J.Du (author)

Esterhuyse, S. W.P. (author)

Fanaroff, B. (author)

Fataar, S. (author)

Foley, A. R. (author)

Foster, G. (author): University Of Oxford,University of California

Fourie, D. (author)

Gamatham, R. (author)

Gatsi, T. (author)

Geschke, R. (author): University of Cape Town

Goedhart, S. (author)

Grobler, T. L. (author): Universiteit Stellenbosch,Stellenbosch University

Gumede, S. C. (author)

Hlakola, M. J. (author)

Hokwana, A. (author)

Hoorn, D. H. (author)

Horn, D. (author)

Horrell, J. (author)

Hugo, B. (author): Rhodes University

Isaacson, A. (author)

Jacobs, O. (author)

Van Rensburg, J. P.Jansen (author)

Jonas, J. L. (author): Rhodes University

Jordaan, B. (author)

Joubert, A. (author)

Joubert, F. (author)

Józsa, G. I.G. (author): Rhodes University

Julie, R. (author)

Julius, C. C. (author)

Kapp, F. (author)

Karastergiou, A. (author): Rhodes University,University of the Western Cape,University Of Oxford

Karels, F. (author)

Kariseb, M. (author)

Karuppusamy, R. (author): Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)

Kasper, V. (author)

Knox-Davies, E. C. (author)

Koch, D. (author)

Kotzé, P. P.A. (author)

Krebs, A. (author)

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(creator_code:org_t)

2018-04-05
2018
English.
In: Astrophysical Journal. - : American Astronomical Society. - 1538-4357 .- 0004-637X. ; 856:2

Related links:: https://research.cha... (primary) (free); show more...; https://doi.org/10.3...; https://research.cha...; https://doi.org/10.3...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

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.

Subject headings

NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)

Keyword

stars: magnetars
pulsars: individual (PSR J16224950)
pulsars: general
stars: neutron

Publication and Content Type

art (subject category)
ref (subject category)

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By the author/editor: Camilo, F.; Scholz, P.; Serylak, M.; Buchner, S.; Merryfield, M.; Kaspi, V. M.; show more...; Archibald, R. F.; Bailes, M.; Jameson, A.; Straten, W. Van; Sarkissian, J.; Reynolds, J.E.; Johnston, S.; Hobbs, G.; Abbott, T. D.; Adam, R. M.; Adams, G. B.; Alberts, T.; Andreas, R.; Asad, K. M.B.; Baker, D. E.; Baloyi, T.; Bauermeister, E. ...; Baxana, T.; Bennett, T. G.H.; Bernardi, G.; Booisen, D.; Booth, Roy, 1938; Botha, D. H.; Boyana, L.; Brederode, L. R. ...; Burger, J. P.; Cheetham, T.; Conradie, J.; Conradie, J. P.; Davidson, D. B.; Bruin, G. De; Swardt, B. De; Villiers, C. De; Villiers, D. I.L ...; Villiers, M. S.D ...; Villiers, W. De; Waal, C. De; Dikgale, M. A.; Toit, G. Du; Toit, L. J.Du; Esterhuyse, S. W ...; Fanaroff, B.; Fataar, S.; Foley, A. R.; Foster, G.; Fourie, D.; Gamatham, R.; Gatsi, T.; Geschke, R.; Goedhart, S.; Grobler, T. L.; Gumede, S. C.; Hlakola, M. J.; Hokwana, A.; Hoorn, D. H.; Horn, D.; Horrell, J.; Hugo, B.; Isaacson, A.; Jacobs, O.; Van Rensburg, J. ...; Jonas, J. L.; Jordaan, B.; Joubert, A.; Joubert, F.; Józsa, G. I.G.; Julie, R.; Julius, C. C.; Kapp, F.; Karastergiou, A.; Karels, F.; Kariseb, M.; Karuppusamy, R.; Kasper, V.; Knox-Davies, E. ...; Koch, D.; Kotzé, P. P.A.; Krebs, A.; show less...

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NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Meteorology and ...

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Astronomy Astrop ...

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Fusion Plasma an ...

Articles in the publication: Astrophysical Jo ...

By the university: Chalmers University of Technology

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