2018ApJ...857L...3W

Query : 2018ApJ...857L...3W

2018ApJ...857L...3W - Astrophys. J., 857, L3-L3 (2018/April-2)

A potential cyclotron resonant scattering feature in the ultraluminous X-ray source pulsar NGC 300 ULX1 seen by NuSTAR and XMM-Newton.

WALTON D.J., BACHETTI M., FURST F., BARRET D., BRIGHTMAN M., FABIAN A.C., GREFENSTETTE B.W., HARRISON F.A., HEIDA M., KENNEA J., KOSEC P., LAU R.M., MADSEN K.K., MIDDLETON M.J., PINTO C., STEINER J.F. and WEBB N.

Abstract (from CDS):

Based on phase-resolved broadband spectroscopy using XMM-Newton and NuSTAR, we report on a potential cyclotron resonant scattering feature (CRSF) at E ∼ 13 keV in the pulsed spectrum of the recently discovered ultraluminous X-ray source (ULX) pulsar NGC 300 ULX1. If this interpretation is correct, the implied magnetic field of the central neutron star is B ∼ 1012 G (assuming scattering by electrons), similar to that estimated from the observed spin-up of the star, and also similar to known Galactic X-ray pulsars. We discuss the implications of this result for the connection between NGC 300 ULX1 and the other known ULX pulsars, particularly in light of the recent discovery of a likely proton cyclotron line in another ULX, M51 ULX-8.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

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

Simbad objects: 10

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Number of rows : 10
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 X SMC X-2 HXB 00 54 33.43 -73 41 01.3 13.77 16.40 16.38   14.67 O9.5III-V 143 0
2 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1614 2
3 NAME NGC 300 2010da s*b 00 55 04.86 -37 41 43.7           LBV 189 0
4 CXOU J005510.0-374212 HXB 00 55 09.990 -37 42 12.16     22.44     WNE 139 1
5 V* BQ Cam HXB 03 34 59.9116110096 +53 10 23.296879776   17.16 15.42 14.26 13.04 O8.5Ve 525 1
6 [KCF2005] M82 G ULX 09 55 51.040 +69 40 45.49           ~ 284 1
7 M 51 Sy2 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 4565 4
8 RX J133007+47110 UX? 13 30 07.55 +47 11 06.1   25.17 25.49   26.04 ~ 83 1
9 NAME NGC 5907 ULX ULX 15 15 58.60 +56 18 10.0           ~ 180 0
10 NAME NGC 7793 P13 ULX 23 57 50.90 -32 37 26.6           ~ 225 0

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