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- W3102325268 abstract "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 01 closer and encloses the binary. The system is likely spectrally hard in X-rays (photon index ) 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." @default.
- W3102325268 created "2020-11-23" @default.
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- W3102325268 date "2018-08-23" @default.
- W3102325268 modified "2023-10-03" @default.
- W3102325268 title "Multiwavelength Observations of a New Redback Millisecond Pulsar Candidate: 3FGL J0954.8–3948" @default.
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- W3102325268 doi "https://doi.org/10.3847/1538-4357/aad243" @default.
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