Query : 2018A&A...620L..12V

2018A&A...620L..12V - Astronomy and Astrophysics, volume 620, L12-12 (2018/12-1)

NGC 300 ULX1: A test case for accretion torque theory.


Abstract (from CDS):

NGC 300 ULX1 is a newly identified ultra-luminous X-ray pulsar. The system is associated with the supernova impostor SN 2010da that was later classified as a possible supergiant Be X-ray binary. In this work we report on the spin period evolution of the neutron star based on all the currently available X-ray observations of the system. We argue that the X-ray luminosity of the system has remained almost constant since 2010, at a level above ten times the Eddington limit. Moreover, we find evidence that the spin period of the neutron star evolved from ∼126s down to ∼18s within a period of about 4 years. We explain this unprecedented spin evolution in terms of the standard accretion torque theory. An intriguing consequence for NGC 300 ULX1 is that a neutron star spin reversal should have occurred a few years after the SN 2010da event.

Abstract Copyright: © ESO 2018

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

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
1 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1424 2
2 NAME NGC 300 2010da s*b 00 55 04.86 -37 41 43.7           LBV 149 0

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