Collapse of axion stars
Abstract
Axion stars, gravitationally bound states of low-energy axion particles, have a maximum mass allowed by gravitational stability. Weakly bound states obtaining this maximum mass have sufficiently large radii such that they are dilute, and as a result, they are well described by a leading-order expansion of the axion potential. Here, heavier states are susceptible to gravitational collapse. Inclusion of higher-order interactions, present in the full potential, can give qualitatively different results in the analysis of collapsing heavy states, as compared to the leading-order expansion. In this work, we find that collapsing axion stars are stabilized by repulsive interactions present in the full potential, providing evidence that such objects do not form black holes. In the last moments of collapse, the binding energy of the axion star grows rapidly, and we provide evidence that a large amount of its energy is lost through rapid emission of relativistic axions.
- Authors:
-
- Univ. of Cincinnati, Cincinnati, OH (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Univ. of Cincinnati, Cincinnati, OH (United States)
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1353475
- Report Number(s):
- arXiv:1608.06911; FERMILAB-PUB-16-678-T
Journal ID: ISSN 1029-8479; 1483092
- Grant/Contract Number:
- AC02-07CH11359
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 12; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; classical theories of gravity; cosmology of theories beyond the SM
Citation Formats
Eby, Joshua, Leembruggen, Madelyn, Suranyi, Peter, and Wijewardhana, L. C. R. Collapse of axion stars. United States: N. p., 2016.
Web. doi:10.1007/JHEP12(2016)066.
Eby, Joshua, Leembruggen, Madelyn, Suranyi, Peter, & Wijewardhana, L. C. R. Collapse of axion stars. United States. https://doi.org/10.1007/JHEP12(2016)066
Eby, Joshua, Leembruggen, Madelyn, Suranyi, Peter, and Wijewardhana, L. C. R. Thu .
"Collapse of axion stars". United States. https://doi.org/10.1007/JHEP12(2016)066. https://www.osti.gov/servlets/purl/1353475.
@article{osti_1353475,
title = {Collapse of axion stars},
author = {Eby, Joshua and Leembruggen, Madelyn and Suranyi, Peter and Wijewardhana, L. C. R.},
abstractNote = {Axion stars, gravitationally bound states of low-energy axion particles, have a maximum mass allowed by gravitational stability. Weakly bound states obtaining this maximum mass have sufficiently large radii such that they are dilute, and as a result, they are well described by a leading-order expansion of the axion potential. Here, heavier states are susceptible to gravitational collapse. Inclusion of higher-order interactions, present in the full potential, can give qualitatively different results in the analysis of collapsing heavy states, as compared to the leading-order expansion. In this work, we find that collapsing axion stars are stabilized by repulsive interactions present in the full potential, providing evidence that such objects do not form black holes. In the last moments of collapse, the binding energy of the axion star grows rapidly, and we provide evidence that a large amount of its energy is lost through rapid emission of relativistic axions.},
doi = {10.1007/JHEP12(2016)066},
journal = {Journal of High Energy Physics (Online)},
number = 12,
volume = 2016,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2016},
month = {Thu Dec 15 00:00:00 EST 2016}
}
Web of Science
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