The optical spectroscopic and photometric observations of the optical counterparts to the be/x-ray binary systems: gro j2058+42 and v0332+53

Download

index.pdf

Date

2008

Author

Özbey, Mehtap

Metadata

Show full item record

Item Usage Stats

176
views

50
downloads

The spectroscopic and photometric observations of the optical counterparts to the Be/X-ray binary systems GRO J2058+42 and V0332+53 (BQ Cam), taken with RTT150 (Russian-Turkish 1.5 meter Telescope), are presented in this study. The distance, color and the reddening estimates for both sources, obtained via photometric observations, are consistent with the previous results. The results of our spectroscopic observations performed between May 2006 and June 2008 for optical counterpart to GRO J2058+42 indicate that the double-peaked emission line profile turns into a single-peaked emission after the last outburst of the system. Furthermore, the spectra of the source show clear evidence for the changes in the ratio of the double peaks of H alpha emission line indicative of the precession of the high-density regions confined in the disk. Unlike the spectra of counterpart to GRO J2058+42, the spectra of BQ Cam, taken between September 2006 and December 2007, exhibit single-peaked H alpha and HeI (Lambda 7065 Angstrom) emission lines. In addition, the equivalent width values of H alpha emission lines, shifts from the the laboratory wavelengths for H alpha and HeI emission lines and the variation in optical brightness of BQ Cam show a close correlation.

Subject Keywords

Physics., Spectrum analysis.

URI

http://etd.lib.metu.edu.tr/upload/12609774/index.pdf
https://hdl.handle.net/11511/17744

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Terahertz (THz) spectroscopy of Freon-11 (CCl3F, CFC-11) at room temperature Altan, Hakan; Alfano, S. A.; Alfano, R. R. (2006-08-31) The rotational spectrum for the lowest vibrational mode for CCl3F has been measured in the 0.1-2 THz frequency range using a compact time-resolved terahertz spectrometer. The peak of the population spectrum for the ground state rotational manifold was observed at 0.3 THz. The observed absorption profile was modeled with rotational and vapor pressure parameters. The limits of detectivity of the compact THz system are discussed in context of atmospheric sensing.
The first optical light from the supernova remnant G182.4+4.3 located in the Galactic anticentre region Sezer, A.; GÖK, FATMA; Aktekin, E. (2012-12-01) We report the discovery of optical filamentary and diffuse emission from G182.4+4.3 using the 1.5-m Russian-Turkish telescope. We present the optical CCD images obtained with the H alpha filter, revealing the presence of mainly filamentary structure to the north-west and filamentary and diffuse structure in the centre, south and north regions of the remnant. The bright optical filaments located in the north-west and south regions are well correlated with the prominent radio shell of the remnant, strongly su...
The controlled drift detector as an x-ray imaging device for diffraction enhanced imaging Özkan, Çiğdem; Serin, Meltem; Department of Physics (2009) Diffraction Enhanced Imaging (DEI) is an X-ray imaging technique providing specific information about the molecular structure of a tissue by means of coherently scattered photons. A Controlled Drift Detector (CDD) is a novel 2D silicon imager developed to be used in X-ray imaging techniques. In this work a final (complete and detailed) analysis of DEI data taken with the CDD in the ELETTRA synchrotron light source facility in Trieste (Italy) in 2005, is presented and the applicability of both this new techn...
Selection of light source and implementation of data acquisition system of an optical experimental setup Reyhanioğlu, Erinç; Öke, Gülay; Department of Physics (2004) The construction of an optical experimental setup is the objective, to measure transmission coefficient of optical components used in plasma investigations. Thus, proper light source either with continuous or line radiation spectrum should be used. In addition, the detectors̕ output signal is recorded on a PC based data recorder after being digitized by an analog to digital converter card.
X-ray spectral and timing studies of the high mass x-ray binary pulsar 4u 1907+09 Şahiner, Şeyda; Baykal, Altan; Department of Physics (2009) In this thesis, X-ray spectral and pulse timing analysis of the high mass X-ray binary pulsar 4U 1907+09, based on the observations with Rossi X-ray Timing Explorer (RXTE) and International Gamma-Ray Astrophysics Laboratory (INTEGRAL), are presented. INTEGRAL (October 2005 - November 2007) and RXTE (June 2007 - December 2008) observations confirm that the luminosity of the source is highly variable such that, flaring and dipping activities are observed. The results of time-averaged energy spectra of RXTE an...

Citation Formats

M. Özbey, “The optical spectroscopic and photometric observations of the optical counterparts to the be/x-ray binary systems: gro j2058+42 and v0332+53,” M.S. - Master of Science, Middle East Technical University, 2008.