Mass and Spin of GRS 1915+105 Based on a Resonance Model of QPOs
نویسنده
چکیده
We demonstrate that the four high-frequency QPOs observed in GRS 1915+105 can be interpreted as the oscillation modes on disks that non-linearly and resonantly interact with a warp. The warp is assumed to be a low-frequency global pattern on the disk. This identification suggests that the relevant mass, M , and spin parameter, a, are M = 13–14M⊙ and a= 0–0.15.
منابع مشابه
Spin of Stellar-Mass Black Holes Estimated by a Model of Quasi-Periodic Oscillations
We have proposed in previous papers that the high-frequency pair QPOs observed in black-hole binaries with frequency ratio 3:2 are inertial-acoustic oscillations (nearly horizontal oscillations with no node in the vertical direction) or g-mode oscillations, which are resonantly excited on warped relativistic disks. The resonance occurs through horizontal motions. In this model the dimensionless...
متن کاملPredicting spin of compact objects from their QPOs: A global QPO model
We establish a unified model to explain Quasi-Periodic-Oscillation (QPO) observed from black hole and neutron star systems globally. This is based on the accreting systems thought to be damped harmonic oscillators with higher order nonlinearity. The model explains multiple properties parallelly independent of the nature of the compact object. It describes QPOs successfully for several compact s...
متن کاملHigher Order Nonlinearity in Accretion Disks: Qpos of Black Hole and Neutron Star Sources and Their Spin
We propose a unified model to explain Quasi-Periodic-Oscillation (QPO), particularly of high frequency, observed from black hole and neutron star systems globally. We consider accreting systems to be damped harmonic oscillators exhibiting epicyclic oscillations with higher order nonlinear resonance to explain QPO. The resonance is expected to be driven by the disturbance from the compact object...
متن کاملComplex Phase Lag Behaviors of the 0 . 5 – 10 Hz Qpos in Grs 1915 + 105
Through studying the hard lags between the soft (3.3 – 5.8 keV) and hard (13.0 – 41.0 keV) photons of the 0.5 – 10 Hz QPOs in GRS 1915+105, we have classified them into three types: 0.5 – 2.0 Hz QPOs, 2.0 – 4.5 Hz QPOs, and 4.5 – 10 Hz QPOs. They are closely related to different temporal and spectral states. The first type of QPOs (0.5 – 2 Hz) have positive hard lags at both the QPO fundamental...
متن کاملOn the source of QPO of the black hole candidate GRS 1915 + 105 : some new observations and their interpretation
A few classes of the light curve of the black hole candidate GRS 1915+105 have been analyzed in detail. We discover that unlike the previous findings, QPOs occasionally occur even in the so-called ‘On’ or softer states. Such findings may require a revision of the accretion/wind scenario of the black hole candidates. We conjecture that considerable winds which is produced in ‘Off’ states, cool d...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2004