2018ApJ...856..180C

Query : 2018ApJ...856..180C

2018ApJ...856..180C - Astrophys. J., 856, 180-180 (2018/April-1)

Revival of the magnetar PSR J1622-4950 observations with MeerKAT, Parkes, XMM-Newton, Swift, Chandra, and NuSTAR.

CAMILO F., SCHOLZ P., SERYLAK M., BUCHNER S., MERRYFIELD M., KASPI V.M., ARCHIBALD R.F., BAILES M., JAMESON A., VAN STRATEN W., 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.F., BAXANA T., BENNETT T.G.H., BERNARDI G., BOOISEN D., BOOTH R.S., BOTHA D.H., BOYANA L., BREDERODE L.R.S., BURGER J.P., CHEETHAM T., CONRADIE J., CONRADIE J.P., DAVIDSON D.B., DE BRUIN G., DE SWARDT B., DE VILLIERS C., DE VILLIERS D.I.L., DE VILLIERS M.S., DE VILLIERS W., DE WAAL C., DIKGALE M.A., DU TOIT G., DU TOIT L.J., ESTERHUYSE S.W.P., 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., JANSEN VAN RENSBURG J.P., JONAS J.L., JORDAAN B., JOUBERT A., JOUBERT F., JOZSA G.I.G., JULIE R., JULIUS C.C., KAPP F., KARASTERGIOU A., KARELS F., KARISEB M., KARUPPUSAMY R., KASPER V., KNOX-DAVIES E.C., KOCH D., KOTZE P.P.A., KREBS A., KRIEK N., KRIEL H., KUSEL T., LAMOOR S., LEHMENSIEK R., LIEBENBERG D., LIEBENBERG I., LORD R.T., LUNSKY B., MABOMBO N., MACDONALD T., MACFARLANE P., MADISA K., MAFHUNGO L., MAGNUS L.G., MAGOZORE C., MAHGOUB O., MAIN J.P.L., MAKHATHINI S., MALAN J.A., MALGAS P., MANLEY J.R., MANZINI M., MARAIS L., MARAIS N., MARAIS S.J., MAREE M., MARTENS A., MATSHAWULE S.D., MATTHYSEN N., MAUCH T., McNALLY L.D., MERRY B., MILLENAAR R.P., MJIKELO C., MKHABELA N., MNYANDU N., MOENG I.T., MOKONE O.J., MONAMA T.E., MONTSHIWA K., MOSS V., MPHEGO M., NEW W., NGCEBETSHA B., NGOASHENG K., NIEHAUS H., NTULI P., NZAMA A., OBIES F., OBROCKA M., OCKARDS M.T., OLYN C., OOZEER N., OTTO A.J., PADAYACHEE Y., PASSMOOR S., PATEL A.A., PAULA S., PEENS-HOUGH A., PHOLOHOLO B., PROZESKY P., RAKOMA S., RAMAILA A.J.T., RAMMALA I., RAMUDZULI Z.R., RASIVHAGA M., RATCLIFFE S., READER H.C., RENIL R., RICHTER L., ROBYNTJIES A., ROSEKRANS D., RUST A., SALIE S., SAMBU N., SCHOLLAR C.T.G., SCHWARDT L., SERANYANE S., SETHOSA G., SHARPE C., SIEBRITS R., SIROTHIA S.K., SLABBER M.J., SMIRNOV O., SMITH S., SOFEYA L., SONGQUMASE N., SPANN R., STAPPERS B., STEYN D., STEYN T.J., STRONG R., STRUTHERS A., STUART C., SUNNYLALL P., SWART P.S., TALJAARD B., TASSE C., TAYLOR G., THERON I.P., THONDIKULAM V., THORAT K., TIPLADY A., TORUVANDA O., VAN AARDT J., VAN BALLA T., VAN DEN HEEVER L., VAN DER BYL A., VAN DER MERWE C., VAN DER MERWE P., VAN NIEKERK P.C., VAN ROOYEN R., VAN STADEN J.P., VAN TONDER V., VAN WYK R., WAIT I., WALKER A.L., WALLACE B., WELZ M., WILLIAMS L.P., XAIA B., YOUNG N. and ZITHA S.

Abstract (from CDS):

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 100x larger than during its dormant state. The X-ray flux one month after reactivation was at least 800x 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.

Abstract Copyright: © 2018. The American Astronomical Society.

Journal keyword(s): pulsars: general - pulsars: individual: PSR J1622-4950 - stars: magnetars - stars: neutron

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PSR J0146+6145 Psr 01 46 22.21 +61 45 03.8   28.100 25.620     ~ 613 0
2 PSR J0501+4516 Psr 05 01 06.600 +45 16 33.96           ~ 142 0
3 2E 2336 HXB 10 50 08.93 -59 53 19.9           Be 419 0
4 PSR J1550-5418 Psr 15 50 54.18 -54 18 23.9           ~ 463 1
5 PSR J1622-4950 Psr 16 22 44.80000 -49 50 54.5000           ~ 169 0
6 PSR B1641-45 Psr 16 44 49.28482 -45 59 09.6360     12.60     ~ 217 0
7 PSR J1745-2900 Psr 17 45 40.1640 -29 00 29.818           ~ 358 0
8 AX J1809.8-1943 Psr 18 09 51.07 -19 43 51.8           ~ 532 0
9 NAME Sgr 1833-0832 gam 18 33 46.0 -08 32 13           ~ 87 0
10 NAME Sgr 1935+2154 * 19 34 55.68 +21 53 48.2           ~ 820 1
11 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1332 2

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