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NICER uncovers the transient nature of the type-B quasi-periodic oscillation in the black hole candidate MAXI J1348-630

NICER uncovers the transient nature of the type-B quasi-periodic oscillation in the black hole candidate MAXI J1348-630
NICER uncovers the transient nature of the type-B quasi-periodic oscillation in the black hole candidate MAXI J1348-630
We present a systematic spectral-timing analysis of a fast appearance/disappearance of a type-B quasi-periodic oscillation (QPO), observed in four Neutron Star Interior Composition Explorer (NICER) observations of MAXI J1348−630. By comparing the spectra of the period with and without the type-B QPO, we found that the main difference appears at energy bands above ∼2 keV, suggesting that the QPO emission is dominated by the hard Comptonized component. During the transition, a change in the relative contribution of the disc and Comptonized emission was observed. The disc flux decreased while the Comptonized flux increased from non-QPO to type-B QPO. However, the total flux did not change too much in the NICER band. Our results reveal that the type-B QPO is associated with a redistribution of accretion power between the disc and Comptonized emission. When the type-B QPO appears, more accretion power is dissipated into the Comptonized region than in the disc. Our spectral fits give a hint that the increased Comptonized emission may come from an additional component that is related to the base of the jet.
0035-8711
3823–3843
Zhang, L.
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Altamirano, Diego
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Uttley, P.
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García, F.
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Méndez, M.
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Homan, J.
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Steiner, J.F.
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Alabarta, K.
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Buisson, D.J.K.
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Remillard, R.A.
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Gendreau, K.C.
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Arzoumanian, Z .
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Markwardt, C.
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Strohmayer, T.E.
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Neilsen, J.
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Basak, A.
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Zhang, L.
ff8a9464-5e30-4901-9c74-32172b552399
Altamirano, Diego
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Uttley, P.
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García, F.
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Méndez, M.
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Homan, J.
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Steiner, J.F.
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Alabarta, K.
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Buisson, D.J.K.
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Remillard, R.A.
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Gendreau, K.C.
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Arzoumanian, Z .
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Markwardt, C.
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Strohmayer, T.E.
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Neilsen, J.
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Basak, A.
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Zhang, L., Altamirano, Diego, Uttley, P., García, F., Méndez, M., Homan, J., Steiner, J.F., Alabarta, K., Buisson, D.J.K., Remillard, R.A., Gendreau, K.C., Arzoumanian, Z ., Markwardt, C., Strohmayer, T.E., Neilsen, J. and Basak, A. (2021) NICER uncovers the transient nature of the type-B quasi-periodic oscillation in the black hole candidate MAXI J1348-630. Monthly Notices of the Royal Astronomical Society, 3823–3843.

Record type: Article

Abstract

We present a systematic spectral-timing analysis of a fast appearance/disappearance of a type-B quasi-periodic oscillation (QPO), observed in four Neutron Star Interior Composition Explorer (NICER) observations of MAXI J1348−630. By comparing the spectra of the period with and without the type-B QPO, we found that the main difference appears at energy bands above ∼2 keV, suggesting that the QPO emission is dominated by the hard Comptonized component. During the transition, a change in the relative contribution of the disc and Comptonized emission was observed. The disc flux decreased while the Comptonized flux increased from non-QPO to type-B QPO. However, the total flux did not change too much in the NICER band. Our results reveal that the type-B QPO is associated with a redistribution of accretion power between the disc and Comptonized emission. When the type-B QPO appears, more accretion power is dissipated into the Comptonized region than in the disc. Our spectral fits give a hint that the increased Comptonized emission may come from an additional component that is related to the base of the jet.

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NICER uncovers the transient nature of the type-B quasi-periodic oscillation in the black hole candidate MAXI J1348-630 - Accepted Manuscript
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More information

Accepted/In Press date: 25 May 2021
e-pub ahead of print date: 31 May 2021
Additional Information: arxiv is am

Identifiers

Local EPrints ID: 451003
URI: http://eprints.soton.ac.uk/id/eprint/451003
ISSN: 0035-8711
PURE UUID: 0bb880bc-ccaa-46b5-aa3a-1b660f6b1a0b
ORCID for Diego Altamirano: ORCID iD orcid.org/0000-0002-3422-0074

Catalogue record

Date deposited: 01 Sep 2021 16:31
Last modified: 02 Sep 2021 01:46

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Contributors

Author: L. Zhang
Author: P. Uttley
Author: F. García
Author: M. Méndez
Author: J. Homan
Author: J.F. Steiner
Author: K. Alabarta
Author: D.J.K. Buisson
Author: R.A. Remillard
Author: K.C. Gendreau
Author: Z . Arzoumanian
Author: C. Markwardt
Author: T.E. Strohmayer
Author: J. Neilsen
Author: A. Basak

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