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A Possible Mass Distribution of Primordial Black Holes Implied by LIGO-Virgo
06/01
2021
Seminar
- Title A Possible Mass Distribution of Primordial Black Holes Implied by LIGO-Virgo
- Speaker 邓鹤凌
- Date 10:00 am, Tuesday, June 1st, 2021 (Beijing Time)
- Venue Online Zoom meeting: 954 8794 0061
Abstract
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CAS Key Laboratory of Theoretical Physics | |
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Institute of Theoretical Physics | |
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Chinese Academy of Sciences | |
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Seminar | |
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Title 题目 |
A Possible Mass Distribution of Primordial Black Holes Implied by LIGO-Virgo |
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Speaker 报告人 |
邓鹤凌 |
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Affiliation 所在单位 |
亚利桑那州立大学 |
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Date 日期 |
10:00 am, Tuesday, June 1st, 2021 (Beijing Time) |
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Venue 地点 |
Online Zoom meeting: 954 8794 0061 |
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Contact Person 所内联系人 |
王少江 Shao-Jiang Wang |
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Abstract 摘要 |
The LIGO-Virgo Collaboration has so far detected around 90 black holes, whose mass distribution appears to have a peak at ～ 30M☉ and two tails on the ends. By assuming that they all have a primordial origin, we analyze the GWTC-1 (O1&O2) and GWTC-2 (O3a) datasets by performing maximum likelihood estimation on a broken power-law mass function, which appears to behave better than the popular log-normal mass function. Surprisingly, such a simple distribution can be realized in our previously proposed mechanism of PBH formation, where the black holes are formed by vacuum bubbles that nucleate during inflation via quantum tunneling. |