2019MNRAS.488.5225V

Query : 2019MNRAS.488.5225V

2019MNRAS.488.5225V - Mon. Not. R. Astron. Soc., 488, 5225-5231 (2019/October-1)

NGC 300 ULX1: spin evolution, super-Eddington accretion, and outflows.

VASILOPOULOS G., PETROPOULOU M., KOLIOPANOS F., RAY P.S., BAILYN C.B., HABERL F. and GENDREAU K.

Abstract (from CDS):

NGC 300 ULX1 is an ultraluminous X-ray pulsar, showing an unprecedented spin evolution, from about 126 s to less than 20 s in only 4 yr, consistent with steady mass accretion rate. Following its discovery we have been monitoring the system with Swift and NICER to further study its properties. We found that even though the observed flux of the system dropped by a factor of >=20, the spin-up rate remained almost constant. A possible explanation is that the decrease in the observed flux is a result of increased absorption of obscuring material due to outflows or a precessing accretion disc.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: neutron - pulsars: individual: NGC 300 ULX1 - galaxies: individual: NGC 300 - X-rays: binaries

Simbad objects: 5

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Number of rows : 5
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 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1614 2
2 NAME NGC 300 2010da s*b 00 55 04.86 -37 41 43.7           LBV 189 0
3 [KCF2005] M82 G ULX 09 55 51.040 +69 40 45.49           ~ 284 1
4 NAME NGC 5907 ULX ULX 15 15 58.60 +56 18 10.0           ~ 180 0
5 NAME NGC 7793 P13 ULX 23 57 50.90 -32 37 26.6           ~ 225 0

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