The relationship between accretion disks and jets
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional Autónoma de México
2007
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| _version_ | 1866817196062146560 |
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| author | Julian H. Krolik |
| author_facet | Julian H. Krolik |
| contents | The relationship between accretion disks and jets Julian H. Krolik John F. Hawley Shigenobu Hirose Física, Astronomía y Matemáticas Accretion instabilities galaxies: jets accretion disks black hole physics Recent results are reported from a program of large-scale numerical simulation of accretion and jet ows utilizing a code that computes 3-d MHD in full general relativity. We find that out ows arise as a directconsequence of accretion and have a generic geometric form: a funnel along the black hole rotation axis thathas very low matter density but strong helical magnetic fields, surrounded by a funnel-wall flow of much greatermatter density. Large-scale field is created spontaneously in the funnel as a consequence of accretion, despitethe absence of large-scale field originally. Coronal pressure both accelerates and collimates the funnel-wall outflow. The strength of all quantities associated with the outow is a strongly increasing function of black hole spin parameter a/M. Measured in terms of conventional rest-mass effciency, both the matter and theelectromagnetic components of the outow can be comparable in power to the radiation expected from theaccretion disk. 2007 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57102702 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.27 |
| format | Artículo científico |
| id | redalyc_57102702 |
| language | en |
| publishDate | 2007 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | The relationship between accretion disks and jets Julian H. Krolik Física, Astronomía y Matemáticas Accretion instabilities galaxies: jets accretion disks black hole physics The relationship between accretion disks and jets Julian H. Krolik John F. Hawley Shigenobu Hirose Física, Astronomía y Matemáticas Accretion instabilities galaxies: jets accretion disks black hole physics Recent results are reported from a program of large-scale numerical simulation of accretion and jet ows utilizing a code that computes 3-d MHD in full general relativity. We find that out ows arise as a directconsequence of accretion and have a generic geometric form: a funnel along the black hole rotation axis thathas very low matter density but strong helical magnetic fields, surrounded by a funnel-wall flow of much greatermatter density. Large-scale field is created spontaneously in the funnel as a consequence of accretion, despitethe absence of large-scale field originally. Coronal pressure both accelerates and collimates the funnel-wall outflow. The strength of all quantities associated with the outow is a strongly increasing function of black hole spin parameter a/M. Measured in terms of conventional rest-mass effciency, both the matter and theelectromagnetic components of the outow can be comparable in power to the radiation expected from theaccretion disk. 2007 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57102702 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Vol.27 |
| title | The relationship between accretion disks and jets |
| topic | Física, Astronomía y Matemáticas Accretion instabilities galaxies: jets accretion disks black hole physics |
| url | https://www.redalyc.org/articulo.oa?id=57102702 |