Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Can mixed star-plus-wormhole systems mimic black holes?   We consider mixed strongly gravitating configurations consisting of a
wormhole threaded by two types of ordinary matter. For such systems, the
possibility of obtaining static spherically symmetric solutions describing
compact massive central objects enclosed by high-redshift surfaces
(black-hole-like configurations) is studied. Using the standard thin accretion
disk model, we exhibit potentially observable differences allowing to
distinguish the mixed systems from ordinary black holes with the same masses.

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The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
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The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con
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The categories of this paper are: hep-th
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: funct-an