2020MNRAS.497.5498W

Query : 2020MNRAS.497.5498W

2020MNRAS.497.5498W - Mon. Not. R. Astron. Soc., 497, 5498-5506 (2020/October-1)

Insight-HXMT observations of Swift J0243.6+6124: the evolution of RMS pulse fractions at super-Eddington luminosity.

WANG P.J., KONG L.D., ZHANG S., CHEN Y.P., ZHANG S.N., QU J.L., JI L., TAO L., GE M.Y., LU F.J., CHEN L., SONG L.M., LI T.P., XU Y.P., CAO X.L., CHEN Y., LIU C.Z., BU Q.C., CAI C., CHANG Z., CHEN G., CHEN T.X., CHEN Y.B., CUI W., CUI W.W., DENG J.K., DONG Y.W., DU Y.Y., FU M.X., GAO G.H., GAO H., GAO M., GU Y.D., GUAN J., GUO C.C., HAN D.W., HUANG Y., HUO J., JIA S.M., JIANG L.H., JIANG W.C., JIN J., JIN Y.J., LI B., LI C.K., LI G., LI M.S., LI W., LI X., LI X.B., LI X.F., LI Y.G., LI Z.W., LIANG X.H., LIAO J.Y., LIU B.S., LIU G.Q., LIU H.W., LIU X.J., LIU Y.N., LU B., LU X.F., LUO Q., LUO T., MA X., MENG B., NANG Y., NIE J.Y., OU G., SAI N., SHANG R.C., SONG X.Y., SUN L., TAN Y., TUO Y.L., WANG C., WANG G.F., WANG J., WANG L.J., WANG W.S., WANG Y.S., WEN X.Y., WU B.Y., WU B.B., WU M., XIAO G.C., XIAO S., XIONG S.L., YANG J.W., YANG S., YANG Y.J., YANG Y.J., YI Q.B., YIN Q.Q., YOU Y., ZHANG A.M., ZHANG C.M., ZHANG F., ZHANG H.M., ZHANG J., ZHANG T., ZHANG W.C., ZHANG W., ZHANG W.Z., ZHANG Y., ZHANG Y.F., ZHANG Y.J., ZHANG Y., ZHANG Z., ZHANG Z., ZHANG Z.L., ZHAO H.S., ZHAO X.F., ZHENG S.J., ZHENG Y.G., ZHOU D.K., ZHOU J.F., ZHU Y.X., ZHU Y. and ZHUANG R.L.

Abstract (from CDS):

Based on Insight-HXMT data, we report on the pulse fraction evolution during the 2017-2018 outburst of the newly discovered first Galactic ultraluminous X-ray (ULX) source Swift J0243.6+6124. The pulse fractions of 19 observation pairs selected in the rising and fading phases with similar luminosity are investigated. The results show a general trend of the pulse fraction increasing with luminosity and energy at supercritical luminosity. However, the relative strength of the pulsation between each pair evolves strongly with luminosity. The pulse fraction in the rising phase is larger at luminosity below 7.71 x 1038 erg s–1, but smaller at above. A transition luminosity is found to be energy independent. Such a phenomenon is first confirmed by Insight-HXMT observations and we speculate that it may have relation with the radiation-pressure-dominated accretion disc.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: neutron - pulsars: individual: Swift J0243.6+6124 - X-rays: binaries

Simbad objects: 8

goto Full paper

goto View the references in ADS

Number of rows : 8
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 NAME NGC 300 2010da s*b 00 55 04.86 -37 41 43.7           LBV 189 0
2 SWIFT J0243.6+6124 HXB 02 43 40.4252869512 +61 26 03.757456824   13.71 12.84 12.57   O9.5Ve 208 0
3 2E 756 ULX 03 18 22.00 -66 36 04.3   23.5 23.6     O9.5 262 3
4 V* BQ Cam HXB 03 34 59.9116110096 +53 10 23.296879776   17.16 15.42 14.26 13.04 O8.5Ve 525 1
5 [KCF2005] M82 G ULX 09 55 51.040 +69 40 45.49           ~ 284 1
6 RX J133001+47137 UX? 13 30 01.01 +47 13 43.9           ~ 108 0
7 NAME NGC 5907 ULX ULX 15 15 58.60 +56 18 10.0           ~ 180 0
8 NAME NGC 7793 P13 ULX 23 57 50.90 -32 37 26.6           ~ 225 0

To bookmark this query, right click on this link: simbad:objects in 2020MNRAS.497.5498W and select 'bookmark this link' or equivalent in the popup menu