Absorption Dips in the Light Curves of GRO J1655–40 and 4U 1630–47 during Outburst
Using the RXTE PCA, we discovered deep dips in the X-ray light curves of the black hole candidates GRO J1655-40 and 4U 1630-47 during outburst. Similar kind of dips for GRO J1655-40 were found in 90 s measurements of the RXTE ASM during the same outburst. The duration of the dips in both sources is...
| Autores principales: | , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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1998
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/123633 |
| Aporte de: |
| id |
I19-R120-10915-123633 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas accretion, accretion disks binaries: close black hole physics stars: individual (GRO J1655-40, 4U 1630-47) X-rays: stars |
| spellingShingle |
Ciencias Astronómicas accretion, accretion disks binaries: close black hole physics stars: individual (GRO J1655-40, 4U 1630-47) X-rays: stars Kuulkers, Erik Wijnands, Rudy Belloni, Tomaso Méndez, Mariano R. Klis, Michiel van der Paradijs, Jan van Absorption Dips in the Light Curves of GRO J1655–40 and 4U 1630–47 during Outburst |
| topic_facet |
Ciencias Astronómicas accretion, accretion disks binaries: close black hole physics stars: individual (GRO J1655-40, 4U 1630-47) X-rays: stars |
| description |
Using the RXTE PCA, we discovered deep dips in the X-ray light curves of the black hole candidates GRO J1655-40 and 4U 1630-47 during outburst. Similar kind of dips for GRO J1655-40 were found in 90 s measurements of the RXTE ASM during the same outburst. The duration of the dips in both sources is of the order of minutes. The occurrences of the dips observed with the RXTE PCA and ASM in GRO J1655-40 are consistent with the optically determined orbital period, and were found between photometric orbital phases 0.72 and 0.86. This constitutes the first evidence for orbital variations in X-rays for GRO J1655-40. The PCA data indicate that an absorbing medium is responsible for these dips. The X-ray spectra during the dips can be best described by a heavily absorbed component and an unabsorbed component. In the case of GRO J1655-40 we are able constrain the extent of the absorbing medium and the central X-ray source. |
| format |
Articulo Articulo |
| author |
Kuulkers, Erik Wijnands, Rudy Belloni, Tomaso Méndez, Mariano R. Klis, Michiel van der Paradijs, Jan van |
| author_facet |
Kuulkers, Erik Wijnands, Rudy Belloni, Tomaso Méndez, Mariano R. Klis, Michiel van der Paradijs, Jan van |
| author_sort |
Kuulkers, Erik |
| title |
Absorption Dips in the Light Curves of GRO J1655–40 and 4U 1630–47 during Outburst |
| title_short |
Absorption Dips in the Light Curves of GRO J1655–40 and 4U 1630–47 during Outburst |
| title_full |
Absorption Dips in the Light Curves of GRO J1655–40 and 4U 1630–47 during Outburst |
| title_fullStr |
Absorption Dips in the Light Curves of GRO J1655–40 and 4U 1630–47 during Outburst |
| title_full_unstemmed |
Absorption Dips in the Light Curves of GRO J1655–40 and 4U 1630–47 during Outburst |
| title_sort |
absorption dips in the light curves of gro j1655–40 and 4u 1630–47 during outburst |
| publishDate |
1998 |
| url |
http://sedici.unlp.edu.ar/handle/10915/123633 |
| work_keys_str_mv |
AT kuulkerserik absorptiondipsinthelightcurvesofgroj165540and4u163047duringoutburst AT wijnandsrudy absorptiondipsinthelightcurvesofgroj165540and4u163047duringoutburst AT bellonitomaso absorptiondipsinthelightcurvesofgroj165540and4u163047duringoutburst AT mendezmarianor absorptiondipsinthelightcurvesofgroj165540and4u163047duringoutburst AT klismichielvander absorptiondipsinthelightcurvesofgroj165540and4u163047duringoutburst AT paradijsjanvan absorptiondipsinthelightcurvesofgroj165540and4u163047duringoutburst |
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Repositorios |
| _version_ |
1764820449889353728 |