2001ApJ...549L.229L

Query : 2001ApJ...549L.229L

2001ApJ...549L.229L - Astrophys. J., 549, L229-L232 (2001/March-2)

A Compton upscattering model for soft lags in the lower kilohertz quasi-periodic oscillation in 4U 1608-52.

LEE H.C., MISRA R. and TAAM R.E.

Abstract (from CDS):

An empirical Compton upscattering model is described that reproduces both the fractional amplitude (rms) versus energy and the soft time lags in the ~830 Hz quasi-periodic oscillation (QPO) observed in 4U 1608-52 on 1996 March 3. A combination of two coherent variations in the coronal and soft photon temperatures (with their relative contributions determined by enforcing energy conservation) gives rise to the QPO's energy-dependent characteristics. All input parameters to the model, save a characteristic plasma size and the fraction of Comptonized photons impinging on the soft photon source, are derived from the time-averaged photon energy spectrum of the same observation. Fits to the fractional rms and phase lag data for this kilohertz QPO imply that the spatial extent of the plasma is in the range from ∼4 to 15 km.

Abstract Copyright: ∼

Journal keyword(s): Accretion, Accretion Disks - Radiation Mechanisms: Thermal - Stars: Neutron - X-Rays: Stars

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* QX Nor LXB 16 12 43.0 -52 25 26           ~ 946 1

Query : 2001ApJ...549L.229L

Basic data :
V* QX Nor -- Low Mass X-ray Binary
Other object types: otypes_help 		X (2022MNRAS,4U,...), LXB (2013ApJS), gam (INTEGRAL1,INTREF), N* (2014MNRAS), N*? (2007ApJS), V* (V*)
ICRS coord. (ep=J2000) : 		16 12 43.0 -52 25 26 (X-ray) [ 5000 5000 90 ] D 2022A&A...661A..38P
FK4 coord. (ep=B1950 eq=1950) : 		16 08 52.2 -52 17 46 [ 5000 5000 90 ]
Gal coord. (ep=J2000) : 		330.9258 -00.8509 [ 5000 5000 90 ]
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Identifiers (21) :
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4U 1608-52 H 1608-522 SRGA J161243.0-522526 1XRS 16088-522
1ES 1609-52.2 INTEGRAL1 18 SWIFT J1612.9-5227 [BM83] X1608-522
GPS 1609-523 INTREF 675 SWIFT J1612.7-5225 [KRL2007b] 178
GX 331-01 1M 1608-522 4U 1608-522
1H 1608-522 PBC J1612.7-5225 V* QX Nor
H 1604-52 2S 1608-523 XB 1608-522

References (946 between 1850 and 2026) (Total 946)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Distance : 1   

   

Observing logs
XMM : 4   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : V* QX Nor

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V* QX Nor

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