J/A+A/542/A56 Spectral analysis of 2010-11 outburst of GX 339-4 (Nandi+, 2012)
Accretion flow dynamics during the evolution of timing and spectral properties
of GX 339-4 in 2010-11 outburst.
Nandi A., Debnath D., Mandal S., Chakrabarti S.K.
<Astron. Astrophys. 542, A56 (2012)>
=2012A&A...542A..56N 2012A&A...542A..56N
ADC_Keywords: Binaries, X-ray ; Spectroscopy
Keywords: stars: individual: GX 339-4 - X-ray: binaries -
accretion, accretion disks - black hole physics - shock waves
Abstract:
The Galactic transient black hole candidate (BHC) GX 339-4 exhibited
several outbursts at regular intervals of about two to three years in
the Rossi X-ray Timing Explorer (RXTE) era. After remaining in an
almost quiescent state for three long years, it again became X-ray
active in January, 2010, continuing to be so over the next ∼14 months.
We study the timing and spectral properties of the BHC during its
recent outburst and understand the behavioral change in the accretion
flow dynamics associated with the evolution of the various X-ray
features.
The detailed analysis of the temporal and spectral properties of the
source during this outburst are carried out using archival data of the
RXTE PCA instrument. We analyze a total of 236 observational intervals
consisting of 419 days of data observed by RXTE, from 2010 January 12
to 2011 March 6.
Description:
The online data contains 3 tables A.1-A.3 of detailed timing and
spectral data analysis results of Galactic low-mass black hole X-ray
binary GX 339-4 using RXTE PCA data.
Objects:
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RA (2000) DE Designation(s)
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17 02 49.36 -48 47 22.8 GX 339-4 = V* V821 Ara
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 85 236 PCA Count rates and hardness ratios
tablea2.dat 92 39 *Observed QPO fitted parameters (rising phase)
tablea3.dat 168 126 2.5-25keV PCA spectrum fitted parameters
tables.pdf 512 159 PDF version of the tables
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Note on tablea2.dat: Only information about principal quasi-periodic
oscillations (QPOs) are tabulated here.
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Obs Observation sequential number
5- 18 A14 --- ID Observation ID (NNNNN-NN-NN-NN)
19 A1 --- m_ID [G] Multiplicity index on ID
21- 30 A10 "DD/MM/YYYY" ObsDate UT Date of observation
32- 41 F10.4 d MJD Modified Julian date of observation
43- 49 F7.3 ct/s CR2-6 PCA 2-6keV count rate
51- 57 F7.3 ct/s CR6-20 PCA 6-20keV count rate
59- 63 F5.3 --- HR1 PCA count rate ratio 6-20keV/2-6keV
65- 71 F7.3 ct/s CR2-4 PCA 2-4keV count rate
73- 79 F7.3 ct/s CR4-30 PCA 4-30keV count rate
81- 85 F5.3 --- HR2 PCA count rate ratio 4-30keV/2-4keV
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Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Obs Observation sequential number
5- 19 A15 --- ID Observation ID (NNNNN-NN-NN-NN)
21- 30 A10 "DD/MM/YYYY" ObsDate UT Date of observation
32- 41 F10.4 d MJD Modified Julian date of observation
43- 47 F5.3 Hz nu Centroid frequency of the primary
quasi-periodic oscillation (QPO) peak
49- 53 F5.3 Hz e_nu Error on nu (lower value)
55- 59 F5.3 Hz E_nu Error on nu (upper value)
62- 66 F5.3 Hz Dnu FWHM of QPO
68- 72 F5.3 Hz e_Dnu Error on Dnu (lower value)
74- 78 F5.3 Hz E_Dnu Error on Dnu (upper value)
80- 85 F6.3 --- Q Coherence factor of QPOs, Q=nu/Dnu
87- 92 F6.3 --- rms rms
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Byte-by-byte Description of file: tablea3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Obs Observation sequential number
4 A1 --- n_Obs [*] Note (1)
6- 19 A14 --- ID ID (NNNNN-NN-NN-NN)
20 A1 --- m_ID [G] Multiplicity index on ID
22- 31 A10 "DD/MM/YYYY" ObsDate UT Date
33- 42 F10.4 d MJD Modified Julian date of Observation
44- 48 F5.3 keV Tin Disk black body spectrum fitted model
component color temperature of the
accretion disk
50- 54 F5.3 keV e_Tin Error on Tin (lower value)
56- 60 F5.3 keV E_Tin Error on Tin (upper value)
62- 69 F8.3 --- NDBB Disk black body spectrum fitted model
component normalization
72- 78 F7.3 --- e_NDBB Error on NDBB (lower value)
80- 86 F7.3 --- E_NDBB Error on NDBB (upper value)
88- 92 F5.3 --- Gamma ?=- Power-law spectrum fitted model
component photon index Γ
94- 98 F5.3 --- e_Gamma ? Error on Gamma (lower value)
100-104 F5.3 --- E_Gamma ? Error on Gamma (upper value)
106-110 F5.3 --- NPL ?=- Power-law spectrum fitted model
component normalization
112-116 F5.3 --- e_NPL ? Error on NPL (lower value)
118-122 F5.3 --- E_NPL ? Error on NPL (upper value)
124-128 F5.3 pW/m2 FDBB Flux in disk black body spectrum fitted
model component (in 10-9erg/cm2/s)
130-134 F5.3 pW/m2 e_FDBB Error on FDBB (lower value)
136-140 F5.3 pW/m2 E_FDBB Error on FDBB (upper value)
142-147 F6.3 pW/m2 FPL ?=- Flux in power-law spectrum fitted model
component (in 10-9erg/cm2/s)
149-153 F5.3 pW/m2 e_FPL ? Error on FPL (lower value)
155-159 F5.3 pW/m2 E_FPL ? Error on FPL (upper value)
161-165 F5.2 --- chi2 χ2 value
166 A1 --- --- [/]
167-168 I2 --- dof Degree Of Freedom
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Note (1): *: spectrum is fitted and flux are in 2.5-17keV
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Acknowledgements:
Dipak Debnath, dipakcsp(at)gmail.com
(End) Patricia Vannier [CDS] 02-Apr-2012