X-ray flaring in LMXBs as a diagnostic of strong changes in the inner disk

Monika Balucinska-Church; Michael Church; A Szostek

doi:10.1016/j.nuclphysbps.2004.04.097

X-ray flaring in LMXBs as a diagnostic of strong changes in the inner disk

Monika Balucinska-Church
, Michael Church
, A Szostek

Physics and Astronomy

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

We present results from Rossi-XTE and BeppoSAX on X-ray flaring in three sources: Sco X-1, GX 349+2 and X 1624-490 which demonstrate major changes in the neutron star blackbody emission during flaring. In X 1624490 and GX 349+2, there are dramatic decreases in the neutron star emitting area while the blackbody kT rises during flaring. In Sco X-1, with much higher luminosity, it appears that a similar decrease in emitting area had taken place before the source arrived at the Flaring Branch. We suggest that these changes in all 3 sources are due to a previously unrecognized Eddington limit effect in disk accretion due to the radiation pressure of the neutron star as flaring progresses, leading to major changes at the inner disk.

Original language	English
Pages (from-to)	576-579
Number of pages	4
Journal	Nuclear Physics B - Proceedings Supplements
Volume	132
DOIs	https://doi.org/10.1016/j.nuclphysbps.2004.04.097
Publication status	Published - 1 Jan 2004

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title = "X-ray flaring in LMXBs as a diagnostic of strong changes in the inner disk",

abstract = "We present results from Rossi-XTE and BeppoSAX on X-ray flaring in three sources: Sco X-1, GX 349+2 and X 1624-490 which demonstrate major changes in the neutron star blackbody emission during flaring. In X 1624490 and GX 349+2, there are dramatic decreases in the neutron star emitting area while the blackbody kT rises during flaring. In Sco X-1, with much higher luminosity, it appears that a similar decrease in emitting area had taken place before the source arrived at the Flaring Branch. We suggest that these changes in all 3 sources are due to a previously unrecognized Eddington limit effect in disk accretion due to the radiation pressure of the neutron star as flaring progresses, leading to major changes at the inner disk.",

author = "Monika Balucinska-Church and Michael Church and A Szostek",

year = "2004",

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doi = "10.1016/j.nuclphysbps.2004.04.097",

language = "English",

volume = "132",

pages = "576--579",

journal = "Nuclear Physics B - Proceedings Supplements",

publisher = "Elsevier",

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TY - JOUR

T1 - X-ray flaring in LMXBs as a diagnostic of strong changes in the inner disk

AU - Balucinska-Church, Monika

AU - Church, Michael

AU - Szostek, A

PY - 2004/1/1

Y1 - 2004/1/1

N2 - We present results from Rossi-XTE and BeppoSAX on X-ray flaring in three sources: Sco X-1, GX 349+2 and X 1624-490 which demonstrate major changes in the neutron star blackbody emission during flaring. In X 1624490 and GX 349+2, there are dramatic decreases in the neutron star emitting area while the blackbody kT rises during flaring. In Sco X-1, with much higher luminosity, it appears that a similar decrease in emitting area had taken place before the source arrived at the Flaring Branch. We suggest that these changes in all 3 sources are due to a previously unrecognized Eddington limit effect in disk accretion due to the radiation pressure of the neutron star as flaring progresses, leading to major changes at the inner disk.

AB - We present results from Rossi-XTE and BeppoSAX on X-ray flaring in three sources: Sco X-1, GX 349+2 and X 1624-490 which demonstrate major changes in the neutron star blackbody emission during flaring. In X 1624490 and GX 349+2, there are dramatic decreases in the neutron star emitting area while the blackbody kT rises during flaring. In Sco X-1, with much higher luminosity, it appears that a similar decrease in emitting area had taken place before the source arrived at the Flaring Branch. We suggest that these changes in all 3 sources are due to a previously unrecognized Eddington limit effect in disk accretion due to the radiation pressure of the neutron star as flaring progresses, leading to major changes at the inner disk.

U2 - 10.1016/j.nuclphysbps.2004.04.097

DO - 10.1016/j.nuclphysbps.2004.04.097

M3 - Article

VL - 132

SP - 576

EP - 579

JO - Nuclear Physics B - Proceedings Supplements

JF - Nuclear Physics B - Proceedings Supplements

ER -

X-ray flaring in LMXBs as a diagnostic of strong changes in the inner disk

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