2018MNRAS.479.3366T

Query : 2018MNRAS.479.3366T

2018MNRAS.479.3366T - Mon. Not. R. Astron. Soc., 479, 3366-3372 (2018/September-3)

NuSTAR rules out a cyclotron line in the accreting magnetar candidate 4U2206+54.

TORREJON J.M., REIG P., FURST F., MARTINEZ-CHICHARRO M., POSTNOV K. and OSKINOVA L.

Abstract (from CDS):

Based on our new NuSTAR X-ray telescope data, we rule out any cyclotron line up to 60 keV in the spectra of the high-mass X-ray binary 4U2206+54. In particular, we do not find any evidence of the previously claimed line around 30 keV, independently of the source flux, along the spin pulse. The spin period has increased significantly, since the last observation, up to 5750 ± 10 s, confirming the rapid spin-down rate {dot}ν=-1.8×10–14 Hz s–1. This behaviour might be explained by the presence of a strongly magnetized neutron star (Bs > several times 1013 G) accreting from the slow wind of its main-sequence O9.5 companion.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): Stars: individual: (4U2206+54, BD+53 2790) - X-rays: binaries

Simbad objects: 3

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Number of rows : 3
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 V* V662 Cas HXB 01 18 02.6976641952 +65 17 29.829200388 12.27 11.99 11.14 10.33 9.58 B1Iae 289 0
2 2E 4200 HXB 19 10 43.551 +09 16 29.83           B 26 0
3 BD+53 2790 HXB 22 07 56.2366802328 +54 31 06.408879888 9.4 10.11 9.84 9.64 9.43 O9.5Vep 233 0

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