Absorption dips in GRO J1655-40: mapping the inner accretion disk

Using the RXTE PCA we discovered dips in the X-ray light curves of the black-hole candidate GRO J1655-40 during outburst. They are short (~minute) and deep (down to ~8% of the out-of-dip intensity). Similar kind of dips were found in 90s measurements of the RXTE ASM during the same outburst. The occ...

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Autores principales: Kuulkers, Erik, Wijnands, Rudy, Belloni, Tomaso, Méndez, Mariano R., Klis, Michiel van der, Paradijs, Jan van
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 1999
Materias:
Ciencias Astronómicas
Physics
Light curve
Accretion disc
Orbital period
Astrophysics
Absorption (electromagnetic radiation)
Astronomy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123172
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-123172
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
Physics
Light curve
Accretion disc
Orbital period
Astrophysics
Absorption (electromagnetic radiation)
Astronomy
spellingShingle Ciencias Astronómicas
Physics
Light curve
Accretion disc
Orbital period
Astrophysics
Absorption (electromagnetic radiation)
Astronomy
Kuulkers, Erik
Wijnands, Rudy
Belloni, Tomaso
Méndez, Mariano R.
Klis, Michiel van der
Paradijs, Jan van
Absorption dips in GRO J1655-40: mapping the inner accretion disk
topic_facet Ciencias Astronómicas
Physics
Light curve
Accretion disc
Orbital period
Astrophysics
Absorption (electromagnetic radiation)
Astronomy
description Using the RXTE PCA we discovered dips in the X-ray light curves of the black-hole candidate GRO J1655-40 during outburst. They are short (~minute) and deep (down to ~8% of the out-of-dip intensity). Similar kind of dips were found in 90s measurements of the RXTE ASM during the same outburst. The occurrences of the dips 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. Using these results we are able constrain the extent of the absorbing medium and the central X-ray source. GRO J1655-40 was in the canonical high state during our PCA observations.
format Articulo
Preprint
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 GRO J1655-40: mapping the inner accretion disk
title_short Absorption dips in GRO J1655-40: mapping the inner accretion disk
title_full Absorption dips in GRO J1655-40: mapping the inner accretion disk
title_fullStr Absorption dips in GRO J1655-40: mapping the inner accretion disk
title_full_unstemmed Absorption dips in GRO J1655-40: mapping the inner accretion disk
title_sort absorption dips in gro j1655-40: mapping the inner accretion disk
publishDate 1999
url http://sedici.unlp.edu.ar/handle/10915/123172
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AT mendezmarianor absorptiondipsingroj165540mappingtheinneraccretiondisk
AT klismichielvander absorptiondipsingroj165540mappingtheinneraccretiondisk
AT paradijsjanvan absorptiondipsingroj165540mappingtheinneraccretiondisk
bdutipo_str Repositorios
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