Sub-second periodic radio oscillations in a microquasar

Abstract

Powerful relativistic jets are one of the ubiquitous features of accreting black holes in all scales. GRS 1915+105 is a well-known fast-spinning black-hole X-ray binary with a relativistic jet, termed as a ``microquasar'', as indicated by its superluminal motion of radio emission. It exhibits persistent x-ray activity over the last 30 years, with quasi-periodic oscillations of $\sim 1-10$ Hz and 34 and 67 Hz in the x-ray band. These oscillations likely originate in the inner accretion disk, but other origins have been considered. Radio observations found variable light curves with quasi-periodic flares or oscillations with periods of $\sim 20-50$ minutes. Here we report two instances of $\sim$5 Hz transient periodic oscillation features from the source detected in the 1.05-1.45 GHz radio band that occurred in January 2021 and June 2022, respectively. Circular polarization was also observed during the oscillation phase.

The author version of the article which will appear in Nature on 26 July 2023, 32 pages including the extended data. The online publication version can be found at the following URL: https://www.nature.com/articles/s41586-023-06336-6

References in corpus (15)

• X-ray Properties of Black-Hole Binaries
• PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
• A Parallax Distance to the Microquasar GRS 1915+105 and a Revised Estimate of its Black Hole Mass
• Discovery of oscillations above 200 keV in a black hole X-ray binary with Insight-HXMT
• A rapidly-changing jet orientation in the stellar-mass black hole V404 Cygni
• Evolution of the quasi-periodic oscillation frequency in GRO J1655-40 -- Implications for accretion disk dynamics
• Radio and $\gamma$-ray variability in the BL Lac PKS 0219 -164: Detection of quasi-periodic oscillations in the radio light curve
• Observations of a radio-bright, X-ray obscured GRS 1915+105
• A NICER View of a Highly-Absorbed Flare in GRS 1915+105
• Identification of QPO frequency of GRS 1915+105 as the relativistic dynamic frequency of a truncated accretion disk
• The Novel Obscured State of Stellar-mass Black Hole GRS 1915+105
• ALMA/NICER observations of GRS 1915+105 indicate a return to a hard state
• Wavelet analysis of MAXI J1535-571 with Insight-HXMT
• Wavelet analysis of the transient QPOs in MAXI J1535$-$571 with Insight-HXMT
• Radio QPO in the $\gamma$-ray-loud X-ray binary LS I +61${}^{\circ }$303

Cited by in corpus (1)

• The FAST Core Array