Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000head....5.2308l&link_type=abstract
American Astronomical Society, HEAD Meeting #5, #23.08; Bulletin of the American Astronomical Society, Vol. 32, p.1216
Astronomy and Astrophysics
Astronomy
Scientific paper
An empirical Compton up-scattering model is described which reproduces both the fractional RMS vs. energy and the soft lags (of up to 60 μ sec) in the 830 Hz QPO observed in 4U1608-52 on Mar. 6, 1996. These RXTE observations , which cover photon energies from 5 keV to 30 keV, contain the most constraining lag data publicly available. The model assumes that a hot, uniform corona is cooled by input photons, characterized by a Wien spectrum, from cooler, underlying material. Oscillations in the temperature of the corona, which also heats the underlying material, lead to oscillations in the input photon temperature. A combination of the two variations gives rise to the observed QPO, with their relative contributions determined by enforcing energy conservation. All input parameters to the model, save a characteristic coronal size, are derived from the photon energy spectrum of the Mar. 6 observation. Fits to the fractional RMS and phase lag data for this kilohertz QPO imply that the corona involved is less than 20 km in extent. HL is supported by NASA GSRP grant NGT 5-50172.
Lee Hyun C.
Misra Rajiv
No associations
LandOfFree
A Compton Up-scattering Model for Soft Lags in Kilohertz QPO does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Compton Up-scattering Model for Soft Lags in Kilohertz QPO, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Compton Up-scattering Model for Soft Lags in Kilohertz QPO will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-871368