Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
A study of selected low-mass X-ray binary dip sources observed with INTEGRAL
Date
2007-08-17
Author
Balman, Şölen
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
189
views
0
downloads
Cite This
I present archival data of the dipping LMXB systems, XB 1916-053, XB 1323-619, X1624-490, and 4U 1746-371obtained by the ISGRI and JEM-X detectors on-board the INTEGRAL Observatory. The spectral parameters derived from the fits to the data are consistent with hot coronal regions in these systems where the electron temperatures are in a range 4.9-18.8 keV with the exception of XB 1323-62 having an unbounded temperature. The optical depth to Compton scattering, tau is low and consistent with electron densities n(e) < 10 x 10(15) cm(-3). We interpret that the three of the dipping LMXBs in the scope of this work host hot extended large coronal structures which constitute a symmetric region on the disk responsible for the Comptonization in the systems. We find absorption differences between dipping and non-dipping intervals for XB 1916-053 and X 1624-490 in the JEM-X energy range. The dip and non-dip spectra in the ISGRI energy range (above 20 keV) show no significant difference four the sources. Fits including an additional photo-ionized absorber model for the two sources show that XB 1916-053 has the highest ionized absorber.
Subject Keywords
Stars : neutron
,
Stars : Coronae
,
X-Ray : Binaries
,
Accretion
,
Accretion Disks
,
Radiation Mechanisms : General
URI
https://hdl.handle.net/11511/54600
Collections
Department of Physics, Conference / Seminar
Suggestions
OpenMETU
Core
A comprehensive study of RXTE and INTEGRAL observations of the X-ray pulsar 4U 1907+09
Sahiner, S.; İNAM, SITKI ÇAĞDAŞ; Baykal, Altan (2012-04-01)
We analyse observations of the accretion-powered pulsar 4U 1907+09 from the International Gamma-Ray Astrophysics Laboratory (INTEGRAL; between 2005 October and 2007 November) and from the Rossi X-ray Timing Explorer (RXTE; between 2007 June and 2011 March). Using observations from the Imager on-board the INTEGRAL satellite (IBIS), the INTEGRAL Soft Gamma-Ray Imager (ISGRI) and the RXTE Proportional Counter Array (PCA), we update the pulse period history of the source. We construct power spectrum density of ...
Modelling of quasi-periodic oscillations with wave packets
Alpar, MA; Yilmaz, A (1997-01-01)
Model dispersion relations are introduced to explore power spectra of the normal-branch (NB) and horizontal-branch (HB) quasi-periodic oscillations (QPOs; for reviews see Van der Klis (1989)[ARA&A, 27, 517], (1992) [Proc. of NATO ASI X-Ray Binaries and Recycled Pulsars, eds. E.P.J. Van den Heuvel & S.A. Rappaport, Kluwer, Dordrecht], (1995)[Proc, of NATO ASI The Lives of the Neutron Stars, eds. M.A. Alpar, Omit Kiziloglu, & J. van Paradijs, Kluwer, Dordrecht]) of low mass X-ray binaries (LMXBs) in terms of ...
A study of temeporal characteristics of selected Cataclysmic Variables: The broad-band noise structure between 2-20 kev
Balman, Şölen; Kulebi, B; Beklen, E (2005-09-30)
We present the preliminary analysis of the band-limited noise structure of Cataclysmic Variables (CVs) in the 220 keV energy band. We have currently analyzed Rossi X-ray Timing Explorer (RXTE) PCA data and derived time series from 30 CVs using the RXTE archive. In general, CVs of different types all show broad band noise which can be fitted with power laws, using exponential cut-offs, and Lorenzians in a similar way to power spectral (noise) characteristics of X-ray Binaries (XRBs). In general terms the pow...
The broad-band noise characteristics of selected cataclysmic variables (CVS), anomalous x-ray pulsars (AXPS) and soft gamma repeaters (SGRS)
Külebi, Baybars; Balman, Şölen; Department of Physics (2006)
In this work present the broad-band noise structure in the 2-60 keV data of Cataclysmic Variables (CVs) with Anomalous X-Ray Pulsars (AXPs) and Soft Gamma Repeaters (SGRs). We analyzed Rossi X-ray Timing Explorer (RXTE) PCA data and derived time series from 27 CVs, 4 AXPs and 1 SGR using the RXTE archive. In general, CVs of different types all show broad band noise which can be fitted with power laws, using exponentional cut-offs, and Lorentzians in a similar way to power spectral (noise) characteristics of...
Comprehensive timing and X-ray spectral analysis of GX 1+4
Serim, M. M.; Sahiner, S.; Cerri-Serim, D.; İNAM, SITKI ÇAĞDAŞ; Baykal, Altan (2017-08-01)
We present the analysis of RXTE-PCA observations of GX 1+4 between 2001 March 3 and 2003 January 31 together with the CGRO-BATSE X-ray flux and frequency derivative time series between 1991 and 1999. From the timing analysis of RXTE-PCA observations, we are able to phase connect pulse arrival times of the source within two different time intervals and obtain corresponding timing solutions. Using these pulse arrival times, we contribute to long-term pulse frequency history of the source. We look for episodic...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
Ş. Balman, “A study of selected low-mass X-ray binary dip sources observed with INTEGRAL,” 2007, vol. 983, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54600.
