Document detail
ID
oai:arXiv.org:2407.21262
Topic
High Energy Physics - Phenomenolog... Astrophysics - Cosmology and Nonga... Astrophysics - Astrophysics of Gal... General Relativity and Quantum Cos...Author
Flambaum, V. V. Samsonov, I. B.Category
sciences: astrophysics
Year
2024
listing date
11/20/2024
Keywords
bose star molecules velocity astrophysicsAbstract
A Bose star passing through cold molecular clouds may capture atoms, molecules and dust particles.
The observational signature of such an event would be a relatively small amount of matter that is gravitationally bound.
This binding may actually be provided by invisible dark matter forming the Bose star.
We may expect a relative excess of heavier atoms, molecules, and solid dust compared to the content of giant cold molecular clouds since the velocity of heavy particles at a given temperature is lower and it may be small compared to the escape velocity, $v_\mathrm{rms} = \sqrt{3k_\mathrm{B} T/m_\mathrm{gas}} \ll v_\mathrm{esc}=\sqrt{2GM/R}$.
Finally, the velocity of this captured matter cloud may correlate with the expected velocity of free dark matter particles (e.g. expected axion wind velocity relative to Earth).
Flambaum, V. V.,Samsonov, I. B., 2024, Captured molecules could make a Bose star visible
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