First Ejection from the PSR B1259-63/LS 2883 High Mass Gamma-Ray Binary Detected During the 2021-2024 Binary Cycle
Abstract
LS 2883/PSR B1259-63 is a high mass, eccentric gamma-ray binary that has previously been observed to eject X-ray emitting material. We report the results of recent Chandra observations near binary apastron in which a new X-ray emitting clump of matter was detected. The clump has a high projected velocity of v ⊥ ≈ 0.07c and hard X-ray spectrum, which fits an absorbed power-law model with Γ = 1.1 ± 0.3. Although clumps with similar velocities and spectra were detected in some of the previous binary cycles, no resolved clumps were seen near apastron in the preceding cycle of 2017-2021.
- Publication:
-
Research Notes of the American Astronomical Society
- Pub Date:
- March 2023
- DOI:
- 10.3847/2515-5172/acc382
- arXiv:
- arXiv:2303.13595
- Bibcode:
- 2023RNAAS...7...52H
- Keywords:
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- High mass x-ray binary stars;
- Neutron stars;
- Pulsars;
- 733;
- 1108;
- 1306;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- RNAAS