Discovery of Jet-Induced Soft Lags of XTE J1550-564 during Its 1998 Outburst. (arXiv:1911.04085v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Chatterjee_A/0/1/0/all/0/1">Arka Chatterjee</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dutta_B/0/1/0/all/0/1">Broja G. Dutta</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Patra_D/0/1/0/all/0/1">Dusmanta Patra</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Chakrabarti_S/0/1/0/all/0/1">Sandip K. Chakrabarti</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Nandi_P/0/1/0/all/0/1">Prantik Nandi</a>

X-ray time lags are complicated in nature. The exact reasons for complex lag
spectra are yet to be known. However, the hard lags, in general, are believed
to be originated due to the inverse Comptonization process. But, the origin of
soft lags remained mischievous. Recent studies on “Disk-Jet Connections”
revealed that the jets are also contributing to 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 anti-correlation 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.

X-ray time lags are complicated in nature. The exact reasons for complex lag
spectra are yet to be known. However, the hard lags, in general, are believed
to be originated due to the inverse Comptonization process. But, the origin of
soft lags remained mischievous. Recent studies on “Disk-Jet Connections”
revealed that the jets are also contributing to 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 anti-correlation 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.

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