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The evolution of x-ray bursts in the "Bursting Pulsar" GRO J1744-28

The evolution of x-ray bursts in the "Bursting Pulsar" GRO J1744-28
The evolution of x-ray bursts in the "Bursting Pulsar" GRO J1744-28
GRO J1744-28, commonly known as the 'Bursting Pulsar', is a low mass X-ray binary containing a neutron star and an evolved giant star. This system, together with the Rapid Burster (MXB 1730-33), are the only two systems that display the so-called Type II X-ray bursts. These type of bursts, which last for 10s of seconds, are thought to be caused by viscous instabilities in the disk; however the Type II bursts seen in GRO J1744-28 are qualitatively very different from those seen in the archetypal Type II bursting source the Rapid Burster. To understand these differences and to create a framework for future study, we perform a study of all X-ray observations of all 3 known outbursts of the Bursting Pulsar which contained Type II bursts, including a population study of all Type II X-ray bursts seen by RXTE. We find that the bursts from this source are best described in four distinct phenomena or 'classes' and that the characteristics of the bursts evolve in a predictable way. We compare our results with what is known for the Rapid Burster and put out results in the context of models that try to explain this phenomena.
astro-ph.HE
0035-8711
2273-2298
Court, J.M.C.
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Altamirano, D.
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Albayati, A. C.
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Sanna, A.
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Belloni, T.
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Overton, T.
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Degenaar, N.
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Wijnands, R.
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Yamaoka, K.
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Hill, A.B.
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Knigge, C.
ac320eec-631a-426e-b2db-717c8bf7857e
Court, J.M.C.
6e39b3e2-c269-49eb-9e06-cc47981117f1
Altamirano, D.
d5ccdb09-0b71-4303-9538-05b467be075b
Albayati, A. C.
1ff2ecd8-1643-4ec7-bd6c-51aea7407a85
Sanna, A.
b925b305-171b-461f-bbf7-1c8fe246293c
Belloni, T.
a6a0a7f0-68d9-411a-97ee-75479ce1aeac
Overton, T.
c7ae4062-575b-46fa-8aa8-c81ff5469942
Degenaar, N.
54149051-d74e-4e43-a7cd-501ec4023511
Wijnands, R.
382893ee-0e03-45e3-9321-db8b9fc74914
Yamaoka, K.
5657d3f1-e732-47c1-bf9f-a4c9a8a077e9
Hill, A.B.
5b17aa71-0c14-4fbf-8bc9-807c8294d4ae
Knigge, C.
ac320eec-631a-426e-b2db-717c8bf7857e

Court, J.M.C., Altamirano, D., Albayati, A. C., Sanna, A., Belloni, T., Overton, T., Degenaar, N., Wijnands, R., Yamaoka, K., Hill, A.B. and Knigge, C. (2018) The evolution of x-ray bursts in the "Bursting Pulsar" GRO J1744-28. Monthly Notices of the Royal Astronomical Society, 481 (2), 2273-2298. (doi:10.1093/mnras/sty2312).

Record type: Article

Abstract

GRO J1744-28, commonly known as the 'Bursting Pulsar', is a low mass X-ray binary containing a neutron star and an evolved giant star. This system, together with the Rapid Burster (MXB 1730-33), are the only two systems that display the so-called Type II X-ray bursts. These type of bursts, which last for 10s of seconds, are thought to be caused by viscous instabilities in the disk; however the Type II bursts seen in GRO J1744-28 are qualitatively very different from those seen in the archetypal Type II bursting source the Rapid Burster. To understand these differences and to create a framework for future study, we perform a study of all X-ray observations of all 3 known outbursts of the Bursting Pulsar which contained Type II bursts, including a population study of all Type II X-ray bursts seen by RXTE. We find that the bursts from this source are best described in four distinct phenomena or 'classes' and that the characteristics of the bursts evolve in a predictable way. We compare our results with what is known for the Rapid Burster and put out results in the context of models that try to explain this phenomena.

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The evolution of X-ray bursts in the 'Bursting Pulsar' GRO J1744-28 - Accepted Manuscript
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Accepted/In Press date: 20 August 2018
e-pub ahead of print date: 29 August 2018
Published date: September 2018
Keywords: astro-ph.HE

Identifiers

Local EPrints ID: 426601
URI: http://eprints.soton.ac.uk/id/eprint/426601
ISSN: 0035-8711
PURE UUID: 43280acd-0f62-46e2-a9f6-2a19098c5e3e
ORCID for D. Altamirano: ORCID iD orcid.org/0000-0002-3422-0074
ORCID for A.B. Hill: ORCID iD orcid.org/0000-0002-4418-0379

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Date deposited: 30 Nov 2018 17:30
Last modified: 23 May 2020 00:34

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