SIMBAD references

2018ApJ...863..194L - Astrophys. J., 863, 194-194 (2018/August-3)

Multiwavelength observations of a new redback millisecond pulsar candidate: 3FGL J0954.8-3948.

LI K.-L., HOU X., STRADER J., TAKATA J., KONG A.K.H., CHOMIUK L., SWIHART S.J., HUI C.Y. and CHENG K.S.

Abstract (from CDS):

We present a multiwavelength study of the unassociated Fermi Large Area Telescope (LAT) source, 3FGL J0954.8-3948, which is likely the γ-ray counterpart of a 9.3 hr binary in the field. With more than 9 years of Pass 8 LAT data, we updated the γ-ray spectral properties and the LAT localization of the γ-ray source. While the binary lies outside the cataloged 95% error ellipse, the optimized LAT ellipse is 0.°1 closer and encloses the binary. The system is likely spectrally hard in X-rays (photon index ΓX=1.4–1.0+1.2) with orbital modulations detected in optical, ultraviolet, and possibly X-rays. A steep spectrum radio counterpart (spectral index α ≃ -1.6) is also found in the TIFR GMRT Sky Survey, implying that it is a pulsar system. We obtained a series of SOAR and Gemini spectroscopic observations in 2017/2018, which show a low-mass secondary orbiting in a close circular orbit with K2 = 272 ± 4 km s–1 under strong irradiation by the primary compact object. All the observations as well as the modeling of the X/γ-ray high-energy emission suggest that 3FGL J0954.8-3948 is a redback millisecond pulsar in a rotation-powered state.

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

Journal keyword(s): binaries: close - gamma rays: stars - pulsars: general - X-rays: binaries

Simbad objects: 22

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2021.06.25-16:35:44

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