2018ApJ...866...83S


Query : 2018ApJ...866...83S

2018ApJ...866...83S - Astrophys. J., 866, 83-83 (2018/October-3)

A multiwavelength view of the neutron star binary 1FGL J1417.7-4402 a progenitor to canonical millisecond pulsars.

SWIHART S.J., STRADER J., SHISHKOVSKY L., CHOMIUK L., BAHRAMIAN A., HEINKE C.O., MILLER-JONES J.C.A., EDWARDS P.G. and CHEUNG C.C.

Abstract (from CDS):

The Fermi γ-ray source 1FGL J1417.7-4407 (J1417) is a compact X-ray binary with a neutron star primary and a red giant companion in a ∼5.4 days orbit. This initial conclusion, based on optical and X-ray data, was confirmed when a 2.66 ms radio pulsar was found at the same location (and with the same orbital properties) as the optical/X-ray source. However, these initial studies found conflicting evidence about the accretion state and other properties of the binary. We present new optical, radio, and X-ray observations of J1417 that allow us to better understand this unusual system. We show that one of the main pieces of evidence previously put forward for an accretion disk-the complex morphology of the persistent Hα emission line-can be better explained by the presence of a strong, magnetically driven stellar wind from the secondary and its interaction with the pulsar wind. The radio spectral index derived from VLA/ATCA observations is broadly consistent with that expected from a millisecond pulsar, further disfavoring an accretion disk scenario. X-ray observations show evidence for a double-peaked orbital light curve, similar to that observed in some redback millisecond pulsar binaries and likely due to an intrabinary shock. Refined optical light-curve fitting gives a distance of 3.1 ± 0.6 kpc, confirmed by a Gaia DR2 parallax measurement. At this distance the X-ray luminosity of J1417 is (1.0–0.3+0.4) x1033 erg s–1, which is more luminous than all known redback systems in the rotational-powered pulsar state, perhaps due to the wind from the giant companion. The unusual phenomenology of this system and its differing evolutionary path from redback millisecond pulsar binaries points to a new eclipsing pulsar "spider" subclass that is a possible progenitor of normal field millisecond pulsar binaries.

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

Journal keyword(s): binaries: spectroscopic - pulsars: general - radio continuum: general - X-rays: binaries - X-rays: general

VizieR on-line data: <Available at CDS (J/ApJ/866/83): table5.dat>

CDS comments: In the title, 1FGL J1417.7-4402 is a misprint for 1FGL J1417.7-4407.

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 2FGL J0427.2-6705 gam 04 27 49.8 -67 04 54           ~ 30 0
2 ICRF J054236.1+495107 Sy1 05 42 36.13789843 +49 51 07.2337251   18.45 17.80 17.210   ~ 1325 1
3 2FGL J0846.0+2820 gam 08 46 03 +28 20.9           ~ 14 0
4 PSR J1023+0038 LXB 10 23 47.6840307966 +00 38 41.006983532     17.31     GV 332 0
5 XSS J12270-4859 LXB 12 27 58.7475950389 -48 53 42.826034125           ~ 218 0
6 V* FK Com PM* 13 30 46.7993742986 +24 13 57.786184235   9.04 8.245   7.204 G4III 356 1
7 ICRF J135256.5-441240 BLL 13 52 56.53491 -44 12 40.3874   16.95 16.37     ~ 107 3
8 2FGL J1417.5-4404 LXB 14 17 16.80 -44 04 40.5           ~ 38 0
9 QSO B1424-41 QSO 14 27 56.29756536 -42 06 19.4375991   18.48 17.7 16.30   ~ 400 1
10 1FGL J1544.5-1127 Psr 15 44 14.33 -11 24 42.0           ~ 44 0
11 PSR J1740-5340 Psr 17 40 44.589 -53 40 40.90   17.43   16.25   ~ 135 2
12 ICRF J193925.0-634245 Sy2 19 39 25.02671 -63 42 45.6255   18.87 18.37 17.64   ~ 1031 1
13 V* V404 Cyg HXB 20 24 03.820 +33 52 01.90 14.50 14.20 12.7     K0IV 1137 0

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2021.08.05-01:39:59

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