Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitational Lensing by Black Holes in Einstein Quartic Gravity   We investigate gravitational lensing effects of spherically symmetric black
holes in Einstein Quartic Gravity (EQG). Using an approximate analytic solution
obtained by continued fraction methods we consider the predictions of EQG for
lensing effects by supermassive black holes at the center of our galaxy and
others in comparison with general relativity (GR). We numerically compute both
time delays and angular positions of images and find that they can deviate from
GR by as much as milliarcseconds, suggesting that observational tests of EQG
are feasible in the near future. We discuss the challenges of distinguishing
the predictions of EQG from those of Einstein Cubic Gravity.

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The categories of this paper are: funct-an
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
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The categories of this paper are: q-alg
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
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The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg
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The categories of this paper are: bayes-an
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph