A Rapid Change in X-Ray Variability and a Jet Ejection in the Black Hole Transient MAXI J1820+070
Name
Homan_2020_ApJL_891_L29.pdf
Description
Published version
Size
1.88 MB
Format
Adobe PDF
Checksum (MD5)
526114e9f54b0391ee28bbce02bf1f4b
Author(s)
Homan, Jeroen
Motta, Sara E.
Bright, Joe
Altamirano, Diego
Arzoumanian, Zaven
Basak, Arkadip
Belloni, Tomaso M.
Cackett, Edward M.
Fender, Rob
Gendreau, Keith C.
Date Issued
March 2020
Journal
Astrophysical Journal Letters
Publisher
American Astronomical Society
Citation
Homan, Jeroen et al. "A Rapid Change in X-Ray Variability and a Jet Ejection in the Black Hole Transient MAXI J1820+070." Astrophysical Journal Letters 891, 2 (March 2020): L29 © 2020 The American Astronomical Society
Version
Final published version
Abstract
We present Neutron Star Interior Composition Explorer X-ray and Arcminute Microkelvin Imager Large Array radio observations of a rapid hard-to-soft state transition in the black hole X-ray transient MAXI J1820+070. During the transition from the hard state to the soft state a switch between two particular types of quasiperiodic oscillations (QPOs) was seen in the X-ray power density spectra, from type-C to type-B, along with a drop in the strength of the broadband X-ray variability and a brief flare in the 7-12 keV band. Soon after this switch (∼2-2.5 hr) a strong radio flare was observed that corresponded to the launch of superluminal ejecta. Although hints of a connection between QPO transitions and radio flares have been seen in other black hole X-ray transients, our observations constitute the strongest observational evidence to date for a link between the appearance of type-B QPOs and the launch of discrete jet ejections.
MIT Department
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/ab7932
