| dc.creator |
Inam, S. C. |
|
| dc.creator |
Beklen, E. |
|
| dc.creator |
Baykal, A. |
|
| dc.date |
2010-03-21T01:00:00Z |
|
| dc.date.accessioned |
2021-12-03T12:05:38Z |
|
| dc.date.available |
2021-12-03T12:05:38Z |
|
| dc.identifier |
fcbf1b69-3d1d-4256-a681-8f754dedf9f2 |
|
| dc.identifier |
10.1111/j.1365-2966.2009.16121.x |
|
| dc.identifier |
https://avesis.sdu.edu.tr/publication/details/fcbf1b69-3d1d-4256-a681-8f754dedf9f2/oai |
|
| dc.identifier.uri |
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/96020 |
|
| dc.description |
We present timing and spectral analysis of Rossi X-ray Timing Explorer-Proportional Counter Array observations of SMCX-1 between 1996 January and 2003 December. From observations around 1996 August 30 with a time-span of similar to 6 d, we obtain a precise timing solution for the source and resolve the eccentricity as 0.00089(6). We find an orbital decay rate of (P) over dot(orb)/P(orb) = -3.402(7) x 10(-6) yr(-1) which is close to the previous results. Using our timing analysis and the previous studies, we construct a similar to 30 yr long pulse period history of the source. We show that frequency derivative shows long- (i.e. more than a few years) and short-term (i.e. order of days) fluctuations. From the spectral analysis, we found that all spectral parameters except Hydrogen column density showed no significant variation with time and X-ray flux. Hydrogen column density is found to be higher as X-ray flux gets lower. This may be due to the increase in soft absorption when the pulsar is partially obscured as in Her X-1 or may just be an artefact of the tail of a soft excess in energy spectrum. |
|
| dc.language |
eng |
|
| dc.rights |
info:eu-repo/semantics/closedAccess |
|
| dc.title |
Analysis of RXTE-PCA Observations of SMC X-1 |
|
| dc.type |
info:eu-repo/semantics/article |
|