Extraordinary luminous soft x-ray transient maxi j0158-744 as an ignition of a nova on a very massive o-ne white dwarf
We present the observation of an extraordinary luminous soft X-ray transient, MAXI J0158-744, by the Monitor of All-sky X-ray Image (MAXI) on 2011 November 11. This transient is characterized by a soft X-ray spectrum, a short duration (1.3 × 103 s < Td < 1.10 × 104 s), a very rapid...
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| Format: | Journal Article |
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Institute of Physics Publishing
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/7188 |
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| author | Morii, M. Tomida, H. Kimura, M. Suwa, F. Negoro, H. Serino, M. Kennea, J. Curran, Peter Walter, F. Kuin, N. Pritchard, T. Nakahira, S. Hiroi, K. Usui, R. Kawai, N. Osborne, J. Mihara, T. Sugizaki, M. Gehrels, N. Kohama, M. Kotani, T. Matsuoka, M. Nakajima, M. Roming, P. Sakamoto, T. Sugimori, K. Tsuboi, Y. Tsunemi, H. Ueda, Y. Ueno, S. Yoshida, A. |
| author_facet | Morii, M. Tomida, H. Kimura, M. Suwa, F. Negoro, H. Serino, M. Kennea, J. Curran, Peter Walter, F. Kuin, N. Pritchard, T. Nakahira, S. Hiroi, K. Usui, R. Kawai, N. Osborne, J. Mihara, T. Sugizaki, M. Gehrels, N. Kohama, M. Kotani, T. Matsuoka, M. Nakajima, M. Roming, P. Sakamoto, T. Sugimori, K. Tsuboi, Y. Tsunemi, H. Ueda, Y. Ueno, S. Yoshida, A. |
| author_sort | Morii, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present the observation of an extraordinary luminous soft X-ray transient, MAXI J0158-744, by the Monitor of All-sky X-ray Image (MAXI) on 2011 November 11. This transient is characterized by a soft X-ray spectrum, a short duration (1.3 × 103 s < Td < 1.10 × 104 s), a very rapid rise (< 5.5 × 103 s), and a huge peak luminosity of 2×1040 erg s-1 in 0.7-7.0 keV band. With Swift observations and optical spectroscopy from the Small and Moderate Aperture Research Telescope System (SMARTS), we confirmed that the transient is a nova explosion, on a white dwarf in a binary with a Be star, located near the Small Magellanic Cloud. An extremely early turn-on of the super-soft X-ray source (SSS) phase (< 0.44 d), the short SSS phase duration of about one month, and a 0.92 keV neon emission line found in the third MAXI scan, 1296 s after the first detection, suggest that the explosion involves a small amount of ejecta and is produced on an unusually massive O-Ne white dwarf close to, or possibly over, the Chandrasekhar limit. We propose that the huge luminosity detected with MAXI was due to the fireball phase, a direct manifestation of the ignition of the thermonuclear runaway process in a nova explosion. |
| first_indexed | 2025-11-14T06:15:05Z |
| format | Journal Article |
| id | curtin-20.500.11937-7188 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:15:05Z |
| publishDate | 2013 |
| publisher | Institute of Physics Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-71882017-09-13T14:42:16Z Extraordinary luminous soft x-ray transient maxi j0158-744 as an ignition of a nova on a very massive o-ne white dwarf Morii, M. Tomida, H. Kimura, M. Suwa, F. Negoro, H. Serino, M. Kennea, J. Curran, Peter Walter, F. Kuin, N. Pritchard, T. Nakahira, S. Hiroi, K. Usui, R. Kawai, N. Osborne, J. Mihara, T. Sugizaki, M. Gehrels, N. Kohama, M. Kotani, T. Matsuoka, M. Nakajima, M. Roming, P. Sakamoto, T. Sugimori, K. Tsuboi, Y. Tsunemi, H. Ueda, Y. Ueno, S. Yoshida, A. X-ray: bursts stars: individual: (MAXI J0158-744) white dwarfs We present the observation of an extraordinary luminous soft X-ray transient, MAXI J0158-744, by the Monitor of All-sky X-ray Image (MAXI) on 2011 November 11. This transient is characterized by a soft X-ray spectrum, a short duration (1.3 × 103 s < Td < 1.10 × 104 s), a very rapid rise (< 5.5 × 103 s), and a huge peak luminosity of 2×1040 erg s-1 in 0.7-7.0 keV band. With Swift observations and optical spectroscopy from the Small and Moderate Aperture Research Telescope System (SMARTS), we confirmed that the transient is a nova explosion, on a white dwarf in a binary with a Be star, located near the Small Magellanic Cloud. An extremely early turn-on of the super-soft X-ray source (SSS) phase (< 0.44 d), the short SSS phase duration of about one month, and a 0.92 keV neon emission line found in the third MAXI scan, 1296 s after the first detection, suggest that the explosion involves a small amount of ejecta and is produced on an unusually massive O-Ne white dwarf close to, or possibly over, the Chandrasekhar limit. We propose that the huge luminosity detected with MAXI was due to the fireball phase, a direct manifestation of the ignition of the thermonuclear runaway process in a nova explosion. 2013 Journal Article http://hdl.handle.net/20.500.11937/7188 10.1088/0004-637X/779/2/118 Institute of Physics Publishing fulltext |
| spellingShingle | X-ray: bursts stars: individual: (MAXI J0158-744) white dwarfs Morii, M. Tomida, H. Kimura, M. Suwa, F. Negoro, H. Serino, M. Kennea, J. Curran, Peter Walter, F. Kuin, N. Pritchard, T. Nakahira, S. Hiroi, K. Usui, R. Kawai, N. Osborne, J. Mihara, T. Sugizaki, M. Gehrels, N. Kohama, M. Kotani, T. Matsuoka, M. Nakajima, M. Roming, P. Sakamoto, T. Sugimori, K. Tsuboi, Y. Tsunemi, H. Ueda, Y. Ueno, S. Yoshida, A. Extraordinary luminous soft x-ray transient maxi j0158-744 as an ignition of a nova on a very massive o-ne white dwarf |
| title | Extraordinary luminous soft x-ray transient maxi j0158-744 as an ignition of a nova on a very massive o-ne white dwarf |
| title_full | Extraordinary luminous soft x-ray transient maxi j0158-744 as an ignition of a nova on a very massive o-ne white dwarf |
| title_fullStr | Extraordinary luminous soft x-ray transient maxi j0158-744 as an ignition of a nova on a very massive o-ne white dwarf |
| title_full_unstemmed | Extraordinary luminous soft x-ray transient maxi j0158-744 as an ignition of a nova on a very massive o-ne white dwarf |
| title_short | Extraordinary luminous soft x-ray transient maxi j0158-744 as an ignition of a nova on a very massive o-ne white dwarf |
| title_sort | extraordinary luminous soft x-ray transient maxi j0158-744 as an ignition of a nova on a very massive o-ne white dwarf |
| topic | X-ray: bursts stars: individual: (MAXI J0158-744) white dwarfs |
| url | http://hdl.handle.net/20.500.11937/7188 |