Detection of high-frequency quasi-periodic oscillation during the reflare of MAXI J1348-630

Raj Kumar; Nilay Bhatt; Subir Bhattacharyya

doi:10.1093/mnrasl/slad065

Detection of high-frequency quasi-periodic oscillation during the reflare of MAXI J1348-630

Raj Kumar
, Nilay Bhatt
, Subir Bhattacharyya

Homi Bhabha National Institute

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

In this work, we report the detection of high-frequency quasi-periodic oscillation (QPO) in the black hole X-ray binary MAXI J1348-630 in its hard spectral state. MAXI J1348-630 went through a reflare during MJD 58634 to MJD 58674 after a 104 d long outburst which began on MJD 58509. During the reflare, the binary system evolved through a series of hard states of varying luminosity. We detected a high-frequency QPO at 98.3 Hz with a significance of 3.7σ in one of the NICER observations during its evolution. It was argued that the QPO frequency might be related to the Keplerian frequency of the accretion flow at the inner radius around a Kerr black hole.

Original language	English
Pages (from-to)	L55-L60
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	524
Issue number	1
DOIs	https://doi.org/10.1093/mnrasl/slad065
State	Published - 1 Sep 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.

Keywords

accretion, accretion discs
X-rays: binaries
X-rays: individual: MAXI J1348-630

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10.1093/mnrasl/slad065

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abstract = "In this work, we report the detection of high-frequency quasi-periodic oscillation (QPO) in the black hole X-ray binary MAXI J1348-630 in its hard spectral state. MAXI J1348-630 went through a reflare during MJD 58634 to MJD 58674 after a 104 d long outburst which began on MJD 58509. During the reflare, the binary system evolved through a series of hard states of varying luminosity. We detected a high-frequency QPO at 98.3 Hz with a significance of 3.7σ in one of the NICER observations during its evolution. It was argued that the QPO frequency might be related to the Keplerian frequency of the accretion flow at the inner radius around a Kerr black hole.",

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Detection of high-frequency quasi-periodic oscillation during the reflare of MAXI J1348-630

Abstract

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Keywords

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