Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Swift Supergiant Fast X-ray Transients Project: a review, new
  results, and future perspectives   We present a review of the Supergiant Fast X-ray Transients (SFXT) Project, a
systematic investigation of the properties of SFXTs with a strategy that
combines Swift monitoring programs with outburst follow-up observations. This
strategy has quickly tripled the available sets of broad-band data of SFXT
outbursts, and gathered a wealth of out-of-outburst data, which have led us to
a broad-band spectral characterization, an assessment of the fraction of the
time these sources spend in each phase, and their duty cycle of inactivity. We
present some new observational results obtained through our outburst
follow-ups, as fitting examples of the exceptional capabilities of Swift in
catching bright flares and monitor them panchromatically.

14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat