The apparent energy-dependent frequency shift of the ~6 Hz QPO in GRS 1915+105 is better reproduced by two fixed-frequency Lorentzian components, a QPO and a QPO shoulder, with distinct fractional rms and phase-lag energy spectra.
Characterizing the Low-Frequency QPO behavior of the X-ray Nova XTE J1550-564
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
For all 209 RXTE observations of the 7-Crab X-ray nova XTE J1550-564, we analyzed the X-ray power spectra, phase lags, and coherence functions. These observations cover the entire 250 day outburst cycle of the source and are the most complete and arguably the richest data set for any black hole X-ray nova. We find that there are three fundamental types of QPO behavior--one more than reported by Wijnands, Homan, & van der Klis (1999, ApJ, 526, 33). The new type occurred during the first half of the outburst. These three types of QPO behavior can be grouped according to the relative contributions of the disk and power-law components to the total flux.
fields
astro-ph.HE 1years
2026 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Complex Energy-Dependent Behaviour of Quasi-Periodic Oscillation Observed in GRS 1915+105
The apparent energy-dependent frequency shift of the ~6 Hz QPO in GRS 1915+105 is better reproduced by two fixed-frequency Lorentzian components, a QPO and a QPO shoulder, with distinct fractional rms and phase-lag energy spectra.