NICER Detects a Soft X-Ray Kilohertz Quasi-periodic Oscillation in 4U 0614+09
Name
Bult_2018_ApJL_860_L9.pdf
Size
536.17 KB
Format
Adobe PDF
Checksum (MD5)
4a4eff5aa8ece069c9161fddc7467f9e
Author(s)
Bult, Peter
Altamirano, Diego
Arzoumanian, Zaven
Cackett, Edward M.
Chakrabarty, Deepto
Doty, John
Enoto, Teruaki
Gendreau, Keith C.
Guillot, Sebastien
Homan, Jeroen
Date Issued
June 2018
Journal
The Astrophysical Journal
Publisher
American Astronomical Society
Citation
Bult, Peter, Diego Altamirano, Zaven Arzoumanian, Edward M. Cackett, Deepto Chakrabarty, John Doty, Teruaki Enoto, et al. “NICER Detects a Soft X-Ray Kilohertz Quasi-Periodic Oscillation in 4U 0614+09.” The Astrophysical Journal 860, no. 1 (June 11, 2018): L9. © 2018 The American Astronomical Society.
Version
Final published version
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. Key words: accretion, accretion disks – stars: neutron – X-rays: binaries – X-rays: individual (4U 0614+09
MIT Department
Massachusetts Institute of Technology. Department of Physics
MIT Kavli Institute for Astrophysics and Space Research
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.3847/2041-8213/AAC893
