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Gravitational wave hints black hole remnants as dark matter
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Description
<jats:title>Abstract</jats:title><jats:p>The end state of Hawking evaporation of a black hole is uncertain. Some candidate quantum gravity theories, such as loop quantum gravity and asymptotic safe gravity, hint towards Planck sized remnants. If so, the Universe might be filled with remnants of tiny primordial black holes, which formed with mass<jats:inline-formula><jats:tex-math/><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi>M</mml:mi><mml:mo><</mml:mo><mml:msup><mml:mn>10</mml:mn><mml:mn>9</mml:mn></mml:msup></mml:math><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cqgace493ieqn1.gif" xlink:type="simple"/></jats:inline-formula> g. A unique scenario is the case of<jats:inline-formula><jats:tex-math/><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi>M</mml:mi><mml:mo>∼</mml:mo><mml:mn>5</mml:mn><mml:mo>×</mml:mo><mml:msup><mml:mn>10</mml:mn><mml:mn>5</mml:mn></mml:msup></mml:math><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cqgace493ieqn2.gif" xlink:type="simple"/></jats:inline-formula> g, where tiny primordial black holes reheat the Universe by Hawking evaporation and their remnants dominate the dark matter (DM). Here, we point out that this scenario leads to a cosmological gravitational wave signal at frequencies ∼100 Hz. Finding such a particular gravitational wave signature with, e.g. the Einstein telescope, would suggest black hole remnants as DM.</jats:p>
Journal
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- Classical and Quantum Gravity
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Classical and Quantum Gravity 40 (17), 177001-, 2023-07-26
IOP Publishing
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Keywords
- High Energy Physics - Theory
- black hole remnants
- Cosmology and Nongalactic Astrophysics (astro-ph.CO)
- primordial black holes
- FOS: Physical sciences
- General Relativity and Quantum Cosmology (gr-qc)
- General Relativity and Quantum Cosmology
- dark matter
- gravitational waves
- High Energy Physics - Theory (hep-th)
- Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
- Astrophysics - Cosmology and Nongalactic Astrophysics
Details 詳細情報について
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- CRID
- 1360584340510891520
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- ISSN
- 13616382
- 02649381
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- Article Type
- journal article
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- Data Source
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- Crossref
- KAKEN
- OpenAIRE