XMM-Newton Observes the Intrabinary Shock of PSR J1959+2048
| Autor: | D. Kandel, Hongjun An, Roger W. Romani |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
High Energy Astrophysical Phenomena (astro-ph.HE) Astrophysics::High Energy Astrophysical Phenomena Flux FOS: Physical sciences Astronomy and Astrophysics Astrophysics Light curve Shock (mechanics) Pulsar Space and Planetary Science Physics::Accelerator Physics Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics - High Energy Astrophysical Phenomena Eclipse |
| Popis: | In a multi-orbit (100 ks) $\mathrm{\it XMM-Newton}$ exposure of the original black widow pulsar, PSR J1959+2048, we measure the strong orbital modulation caused by intrabinary shock (IBS) emission. The IBS light curve peak appears asymmetric, which we attribute to sweep-back effects in the companion wind. We also see evidence for an X-ray eclipse by the companion and its wind. Together with the IBS fit, this supports an edge-on $i\sim 90^\circ$ view of the system and a modest $\sim 1.8M_\odot$ mass for the recycled pulsar. Our IBS fit parameters imply a wind flux that, if persistent, would evaporated the companion within a few Gyr. To appear in the Astrophysical Journal Letters |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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