NICER detects a soft x-ray kilohertz quasi-periodic oscillation in 4U 0614+09
NICER detects a soft x-ray kilohertz quasi-periodic oscillation in 4U 0614+09
We report on the detection of a kilohertz quasi-periodic oscillation (QPO) with the Neutron Star Interior Composition Explorer (NICER). Analyzing approximately 165 ks of NICER exposure on the X-ray burster 4U 0614+09, we detect multiple instances of a single-peak upper kHz QPO, with centroid frequencies that range from 400 to 750 Hz. We resolve the kHz QPO as a function of energy, and measure, for the first time, the QPO amplitude below 2 keV. We find the fractional amplitude at 1 keV is on the order of 2% rms, and discuss the implications for the QPO emission process in the context of Comptonization models.
L9
Bult, Peter
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Altamirano, Diego
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Arzoumanian, Zaven
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Cackett, Edward M.
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Chakrabarty, Deepto
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Doty, John
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Enoto, Teruaki
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Gendreau, Keith C.
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Guillot, Sebastien
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Homan, Jeroen
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Jaisawal, Gaurava K.
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Lamb, Frederick K.
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Ludlam, Renee M.
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Mahmoodifar, Simin
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Markwardt, Craig
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Okajima, Takashi
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Price, Sam
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Strohmayer, Tod E.
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Winternitz, Luke
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2018
Bult, Peter
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Altamirano, Diego
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Arzoumanian, Zaven
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Cackett, Edward M.
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Chakrabarty, Deepto
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Doty, John
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Enoto, Teruaki
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Gendreau, Keith C.
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Guillot, Sebastien
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Homan, Jeroen
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Jaisawal, Gaurava K.
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Lamb, Frederick K.
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Ludlam, Renee M.
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Mahmoodifar, Simin
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Markwardt, Craig
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Okajima, Takashi
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Price, Sam
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Strohmayer, Tod E.
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Winternitz, Luke
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Bult, Peter, Altamirano, Diego, Arzoumanian, Zaven, Cackett, Edward M., Chakrabarty, Deepto, Doty, John, Enoto, Teruaki, Gendreau, Keith C., Guillot, Sebastien, Homan, Jeroen, Jaisawal, Gaurava K., Lamb, Frederick K., Ludlam, Renee M., Mahmoodifar, Simin, Markwardt, Craig, Okajima, Takashi, Price, Sam, Strohmayer, Tod E. and Winternitz, Luke
(2018)
NICER detects a soft x-ray kilohertz quasi-periodic oscillation in 4U 0614+09.
The Astrophysical Journal Letters, 860 (1), .
(doi:10.3847/2041-8213/aac893).
Abstract
We report on the detection of a kilohertz quasi-periodic oscillation (QPO) with the Neutron Star Interior Composition Explorer (NICER). Analyzing approximately 165 ks of NICER exposure on the X-ray burster 4U 0614+09, we detect multiple instances of a single-peak upper kHz QPO, with centroid frequencies that range from 400 to 750 Hz. We resolve the kHz QPO as a function of energy, and measure, for the first time, the QPO amplitude below 2 keV. We find the fractional amplitude at 1 keV is on the order of 2% rms, and discuss the implications for the QPO emission process in the context of Comptonization models.
Text
NICER Detects a Soft X-Ray Kilohertz Quasi-periodic Oscillation in 4U 0614+09
- Accepted Manuscript
More information
Accepted/In Press date: 28 May 2018
e-pub ahead of print date: 11 June 2018
Published date: 2018
Identifiers
Local EPrints ID: 422741
URI: http://eprints.soton.ac.uk/id/eprint/422741
ISSN: 2041-8205
PURE UUID: 72f2c8c3-33df-49ba-8014-b667d0321469
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Date deposited: 01 Aug 2018 16:30
Last modified: 16 Mar 2024 06:54
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Contributors
Author:
Peter Bult
Author:
Zaven Arzoumanian
Author:
Edward M. Cackett
Author:
Deepto Chakrabarty
Author:
John Doty
Author:
Teruaki Enoto
Author:
Keith C. Gendreau
Author:
Sebastien Guillot
Author:
Jeroen Homan
Author:
Gaurava K. Jaisawal
Author:
Frederick K. Lamb
Author:
Renee M. Ludlam
Author:
Simin Mahmoodifar
Author:
Craig Markwardt
Author:
Takashi Okajima
Author:
Sam Price
Author:
Tod E. Strohmayer
Author:
Luke Winternitz
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