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Discovery of Jet-Induced Soft Lags of XTE J1550-564 during Its 1998 Outburst

1
S. N. Bose National Centre for Basic Sciences, Salt Lake, Kolkata 700106, India
2
Rishi Bankim Chandra College, Naihati, West Bengal 743165, India.
3
Indian Centre for Space Physics, 43 Chalantika, Garia St. Rd., Kolkata 700084, India
*
Author to whom correspondence should be addressed.
Presented at the meeting Recent Progress in Relativistic Astrophysics, Shanghai, China, 6–8 May 2019.
Speaker.
Proceedings 2019, 17(1), 8; https://doi.org/10.3390/proceedings2019017008
Published: 16 September 2019
(This article belongs to the Proceedings of Recent Progress in Relativistic Astrophysics)
X-ray time lags are complicated in nature. The exact reasons for complex lag spectra are as yet unknown. However, the hard lags, in general, are believed to be originated due to inverse Comptonization process. However, the origin of soft lags remained mischievous. Recent studies on “Disk–Jet Connections” revealed that the jets are also contributing in the X-ray spectral and timing properties in a magnitude which was more than what was predicted earlier. In this article, we first show an exact anticorrelation between X-ray time lag and radio flux for XTE J1550-546 during its 1998 outburst. We propose that the soft lags might be generated due to the change in the accretion disk structure along the line of sight during higher jet activity.
Keywords: accretion disks; radio jets and outflows; individual—XTE J1550-564; X-ray time lags accretion disks; radio jets and outflows; individual—XTE J1550-564; X-ray time lags
MDPI and ACS Style

Chatterjee, A.; Dutta, B.G.; Patra, D.; Chakrabarti, S.K.; Nandi, P. Discovery of Jet-Induced Soft Lags of XTE J1550-564 during Its 1998 Outburst . Proceedings 2019, 17, 8.

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