Black hole shadow in an asymptotically flat, stationary, and axisymmetric spacetime: The Kerr-Newman and rotating regular black holes
The shadow of a black hole can be one of the strong observational evidences for stationary black holes. If we see shadows at the center of galaxies, we would say whether the observed compact objects are black holes. In this paper, we consider a formula for the contour of a shadow in an asymptoticall...
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| Veröffentlicht in: | Physical review. D 2018-03, Vol.97 (6), Article 064021 |
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| creator | Tsukamoto, Naoki |
| description | The shadow of a black hole can be one of the strong observational evidences for stationary black holes. If we see shadows at the center of galaxies, we would say whether the observed compact objects are black holes. In this paper, we consider a formula for the contour of a shadow in an asymptotically-flat, stationary, and axisymmetric black hole spacetime. We show that the formula is useful for obtaining the contour of the shadow of several black holes such as the Kerr-Newman black hole and rotating regular black holes. Using the formula, we can obtain new examples of the contour of the shadow of rotating black holes if assumptions are satisfied. |
| doi_str_mv | 10.1103/PhysRevD.97.064021 |
| format | Article |
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If we see shadows at the center of galaxies, we would say whether the observed compact objects are black holes. In this paper, we consider a formula for the contour of a shadow in an asymptotically-flat, stationary, and axisymmetric black hole spacetime. We show that the formula is useful for obtaining the contour of the shadow of several black holes such as the Kerr-Newman black hole and rotating regular black holes. Using the formula, we can obtain new examples of the contour of the shadow of rotating black holes if assumptions are satisfied.</description><identifier>ISSN: 2470-0010</identifier><identifier>EISSN: 2470-0029</identifier><identifier>DOI: 10.1103/PhysRevD.97.064021</identifier><language>eng</language><publisher>College Park: American Physical Society</publisher><subject>Asymptotic properties ; Black holes ; Contours ; Galaxies ; Rotation ; Shadows ; Shape ; Spacetime</subject><ispartof>Physical review. 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If we see shadows at the center of galaxies, we would say whether the observed compact objects are black holes. In this paper, we consider a formula for the contour of a shadow in an asymptotically-flat, stationary, and axisymmetric black hole spacetime. We show that the formula is useful for obtaining the contour of the shadow of several black holes such as the Kerr-Newman black hole and rotating regular black holes. Using the formula, we can obtain new examples of the contour of the shadow of rotating black holes if assumptions are satisfied.</description><subject>Asymptotic properties</subject><subject>Black holes</subject><subject>Contours</subject><subject>Galaxies</subject><subject>Rotation</subject><subject>Shadows</subject><subject>Shape</subject><subject>Spacetime</subject><issn>2470-0010</issn><issn>2470-0029</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNo9kM1OwzAQhC0EEhX0BThZ4tqUtfPjhhuUX1EBQuVsOY7dpCRxsV1KHoD3xlWh0ko7h29ntIPQGYExIRBfvFa9e1NfN-OcjSFLgJIDNKAJgwiA5od7TeAYDZ1bQpAZ5IyQAfq5boT8wJVpFHaVKM0G1x0WYVzfrrzxtRRN02PdCD_Czgtfm07YfhSYEovvOmCt8raW2K2EVL5u1SWeVwo_KWujZ7Vpt2aBtWZ73C2wVYt1Iywu9snuFB1p0Tg1_Nsn6P3udj59iGYv94_Tq1kkY5r4SDKlY8V0ISeakaxgOSFC6kKQIhM6y2lcSkbzlAKREmiqkgLKVBaTOIGUyjI-Qec735U1n2vlPF-ate1CJKeEsoQm2QQCRXeUtMY5qzRf2boNT3MCfNs4_2-c54zvGo9_AZq_eAw</recordid><startdate>20180315</startdate><enddate>20180315</enddate><creator>Tsukamoto, Naoki</creator><general>American Physical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20180315</creationdate><title>Black hole shadow in an asymptotically flat, stationary, and axisymmetric spacetime: The Kerr-Newman and rotating regular black holes</title><author>Tsukamoto, Naoki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c324t-c7ef3e7fbc8f716b7911acfba1b6af6923dc7295201cc025e4b0d5cb834052cd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Asymptotic properties</topic><topic>Black holes</topic><topic>Contours</topic><topic>Galaxies</topic><topic>Rotation</topic><topic>Shadows</topic><topic>Shape</topic><topic>Spacetime</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tsukamoto, Naoki</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physical review. D</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tsukamoto, Naoki</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Black hole shadow in an asymptotically flat, stationary, and axisymmetric spacetime: The Kerr-Newman and rotating regular black holes</atitle><jtitle>Physical review. D</jtitle><date>2018-03-15</date><risdate>2018</risdate><volume>97</volume><issue>6</issue><artnum>064021</artnum><issn>2470-0010</issn><eissn>2470-0029</eissn><abstract>The shadow of a black hole can be one of the strong observational evidences for stationary black holes. If we see shadows at the center of galaxies, we would say whether the observed compact objects are black holes. In this paper, we consider a formula for the contour of a shadow in an asymptotically-flat, stationary, and axisymmetric black hole spacetime. We show that the formula is useful for obtaining the contour of the shadow of several black holes such as the Kerr-Newman black hole and rotating regular black holes. Using the formula, we can obtain new examples of the contour of the shadow of rotating black holes if assumptions are satisfied.</abstract><cop>College Park</cop><pub>American Physical Society</pub><doi>10.1103/PhysRevD.97.064021</doi></addata></record> |
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| source | American Physical Society Journals |
| subjects | Asymptotic properties Black holes Contours Galaxies Rotation Shadows Shape Spacetime |
| title | Black hole shadow in an asymptotically flat, stationary, and axisymmetric spacetime: The Kerr-Newman and rotating regular black holes |
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