Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: ULXs, Microblazars, and the Unidentified EGRET sources   We suggest that ultraluminous X-ray sources (ULXs) and some of the variable
low latitude EGRET gamma-ray sources may be two different manifestations of the
same underlying phenomena: high-mass microquasars with relativistic jets
forming a small angle with the line of sight (i.e. microblazars). Microblazars
with jets formed by relatively cool plasma (Lorentz factors for the leptons up
to a few hundreds) naturally lead to ULXs. If the jet contains very energetic
particles (high-energy cutoff above Lorentz factors of several thousands) the
result is a relatively strong gamma-ray source. As pointed out by Kaufman
Bernado, Romero & Mirabel (2002), a gamma-ray microblazar will always have an
X-ray counterpart (although it might be relatively weak), whereas X-ray
microblazars might have no gamma-ray counterparts.

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The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
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The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con