Rotating black holes can have short bristles
The elegant ‘no short hair’ theorem states that, if a spherically-symmetric static black hole has hair, then this hair must extend beyond 3/2 the horizon radius. In the present paper we provide evidence for the failure of this theorem beyond the regime of spherically-symmetric static black holes. In...
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| Format: | Article |
| Language: | English |
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Elsevier
2014-12-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269314007953 |
| _version_ | 1819208633778438144 |
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| author | Shahar Hod |
| author_facet | Shahar Hod |
| author_sort | Shahar Hod |
| collection | DOAJ |
| description | The elegant ‘no short hair’ theorem states that, if a spherically-symmetric static black hole has hair, then this hair must extend beyond 3/2 the horizon radius. In the present paper we provide evidence for the failure of this theorem beyond the regime of spherically-symmetric static black holes. In particular, we show that rotating black holes can support extremely short-range stationary scalar configurations (linearized scalar ‘clouds’) in their exterior regions. To that end, we solve analytically the Klein–Gordon–Kerr–Newman wave equation for a linearized massive scalar field in the regime of large scalar masses. |
| first_indexed | 2024-12-23T05:42:30Z |
| format | Article |
| id | doaj.art-794c2994f3414e19945a0a54393bb819 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-23T05:42:30Z |
| publishDate | 2014-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-794c2994f3414e19945a0a54393bb8192022-12-21T17:58:08ZengElsevierPhysics Letters B0370-26932014-12-01739196200Rotating black holes can have short bristlesShahar Hod0The Ruppin Academic Center, Emeq Hefer 40250, Israel; The Hadassah Institute, Jerusalem 91010, Israel; Correspondence to: The Ruppin Academic Center, Emeq Hefer 40250, Israel.The elegant ‘no short hair’ theorem states that, if a spherically-symmetric static black hole has hair, then this hair must extend beyond 3/2 the horizon radius. In the present paper we provide evidence for the failure of this theorem beyond the regime of spherically-symmetric static black holes. In particular, we show that rotating black holes can support extremely short-range stationary scalar configurations (linearized scalar ‘clouds’) in their exterior regions. To that end, we solve analytically the Klein–Gordon–Kerr–Newman wave equation for a linearized massive scalar field in the regime of large scalar masses.http://www.sciencedirect.com/science/article/pii/S0370269314007953 |
| spellingShingle | Shahar Hod Rotating black holes can have short bristles Physics Letters B |
| title | Rotating black holes can have short bristles |
| title_full | Rotating black holes can have short bristles |
| title_fullStr | Rotating black holes can have short bristles |
| title_full_unstemmed | Rotating black holes can have short bristles |
| title_short | Rotating black holes can have short bristles |
| title_sort | rotating black holes can have short bristles |
| url | http://www.sciencedirect.com/science/article/pii/S0370269314007953 |
| work_keys_str_mv | AT shaharhod rotatingblackholescanhaveshortbristles |