A multi-wavelength study of PSR J1119$-$6127 after 2016 outburst
| Autor: | Xian Hou, Huai-Hai Wang, K. L. Li, L. C.-C. Lin, Shi Dai, Chin-Ping Hu, Jumpei Takata |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Phase difference High Energy Astrophysical Phenomena (astro-ph.HE) 010504 meteorology & atmospheric sciences Astrophysics::High Energy Astrophysical Phenomena Magnetosphere FOS: Physical sciences Astronomy and Astrophysics Astrophysics Magnetar 01 natural sciences Spectral line Neutron star Wavelength High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Pulsar Space and Planetary Science 0103 physical sciences Black-body radiation Astrophysics - High Energy Astrophysical Phenomena 010303 astronomy & astrophysics 0105 earth and related environmental sciences |
| Popis: | PSR~J1119$-$6127, a high-magnetic field pulsar detected from radio to high-energy wavelengths, underwent a magnetar-like outburst beginning on July 27, 2016. In this paper, we study the post-outburst multi-wavelength properties of this pulsar from the radio to GeV bands and discuss its similarity with the outburst of the magnetar XTE~J1810$-$197. In phase-resolved spectral analysis of 0.5--10\,keV X-ray data collected in August 2016, the on-pulse and off-pulse spectra are both characterized by two blackbody components and also require a power-law component similar to the hard X-ray spectra of magnetars. This power-law component is no longer distinguishable in data from December, 2016. We likewise find that there was no substantial shift between the radio and X-ray pulse peaks after the 2016 X-ray outburst. The gamma-ray pulsation after the X-ray outburst is confirmed with data taken after 2016 December and the pulse structure and phase difference between the gamma-ray and radio peaks ($\sim$0.4 cycle) are also consistent with those before the X-ray outburst. These multi-wavelength observations suggest that the re-configuration of the global magnetosphere after 2016 magnetar-like outburst at most continued for about six months. We discuss the evolution of the X-ray emission after the 2016 outburst with the untwisting magnetosphere model. 12 pages,11 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|