Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A systematic study of photoionized emission and warm absorption
  signatures of the NLS1 Mrk 335   We present an analysis of all the archival high resolution spectra of the
Narrow-line Seyfert 1 galaxy Mrk~335 obtained with Reflection Grating
Spectrometer (RGS) on board \textit{XMM-Newton}. The spectra show rich emission
and absorption features in low and intermediate flux intervals. We model the
emission lines with the \textsc{pion\_xs} grid and try to find any possible
correlation between the properties of the emitting gas and the source flux.
Current data does not allow detailed trace of the response of the line emitting
gas to the X-ray flux of Mrk~335, but the flux of the X-ray lines is
significantly less variable than the X-ray continuum. We also find that the
warm absorber's properties are not correlated with the flux variability. From
the latest \textit{XMM-Newton} observation in 2019 December, we find that the
photoionized emission and distant reflection components have not responded to
the flux drop of Mrk~335 from 2018 July. However, the possible existence of
partial covering absorber in the 2018--2019 low state of Mrk~335 makes it
difficult to constrain the scale of the emitting gas using this lack of
response.

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The categories of this paper are: funct-an
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The categories of this paper are: q-alg
19
The categories of this paper are: eess
3
The categories of this paper are: physics
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The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
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The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
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The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
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The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas