Primordial gravastar from inflation
The de Sitter (dS) bubbles can nucleate spontaneously during inflation, and will be stretched by the cosmological expansion to astrophysical scale. We report on a novel phenomenon that some of such bubbles might develop into the gravastar (the ultra-compact object with a dS core) after inflation, wh...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-08-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269319304186 |
| _version_ | 1818442340152377344 |
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| author | Yu-Tong Wang Jun Zhang Yun-Song Piao |
| author_facet | Yu-Tong Wang Jun Zhang Yun-Song Piao |
| author_sort | Yu-Tong Wang |
| collection | DOAJ |
| description | The de Sitter (dS) bubbles can nucleate spontaneously during inflation, and will be stretched by the cosmological expansion to astrophysical scale. We report on a novel phenomenon that some of such bubbles might develop into the gravastar (the ultra-compact object with a dS core) after inflation, which witnessed the occurrence of inflation and might survive till today. It is pointed out that if such a primordial star was involved in one of the LIGO/Virgo events, the post-merger object will eventually collapse into a black hole. As a result, the late-time gravitational wave ringdown waveform will exhibit a series of “echoes” with intervals increasing with time. |
| first_indexed | 2024-12-14T18:42:35Z |
| format | Article |
| id | doaj.art-b0c27d79680e4c7d9afdae83115afab5 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-14T18:42:35Z |
| publishDate | 2019-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-b0c27d79680e4c7d9afdae83115afab52022-12-21T22:51:28ZengElsevierPhysics Letters B0370-26932019-08-01795314318Primordial gravastar from inflationYu-Tong Wang0Jun Zhang1Yun-Song Piao2School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding author.Department of Physics and Astronomy, York University, Toronto, Ontario, M3J 1P3, CanadaSchool of Physics, University of Chinese Academy of Sciences, Beijing 100049, China; Institute of Theoretical Physics, Chinese Academy of Sciences, P.O. Box 2735, Beijing 100190, ChinaThe de Sitter (dS) bubbles can nucleate spontaneously during inflation, and will be stretched by the cosmological expansion to astrophysical scale. We report on a novel phenomenon that some of such bubbles might develop into the gravastar (the ultra-compact object with a dS core) after inflation, which witnessed the occurrence of inflation and might survive till today. It is pointed out that if such a primordial star was involved in one of the LIGO/Virgo events, the post-merger object will eventually collapse into a black hole. As a result, the late-time gravitational wave ringdown waveform will exhibit a series of “echoes” with intervals increasing with time.http://www.sciencedirect.com/science/article/pii/S0370269319304186 |
| spellingShingle | Yu-Tong Wang Jun Zhang Yun-Song Piao Primordial gravastar from inflation Physics Letters B |
| title | Primordial gravastar from inflation |
| title_full | Primordial gravastar from inflation |
| title_fullStr | Primordial gravastar from inflation |
| title_full_unstemmed | Primordial gravastar from inflation |
| title_short | Primordial gravastar from inflation |
| title_sort | primordial gravastar from inflation |
| url | http://www.sciencedirect.com/science/article/pii/S0370269319304186 |
| work_keys_str_mv | AT yutongwang primordialgravastarfrominflation AT junzhang primordialgravastarfrominflation AT yunsongpiao primordialgravastarfrominflation |