Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-05-28
Astronomy and Astrophysics
Astrophysics
6 pages, 4 figures, accepted by Astronomy and Astrophysics
Scientific paper
10.1051/0004-6361:20010618
This article is the first in the series that analyze about 1.87 million periods of PSR B0531+21 (Crab pulsar), observed by the PCA detector aboard the RXTE x-ray observatory. The Crab pulsar's x-ray light curve shows little variation over time scales ranging from days to a period (33.46 milli seconds). The standard deviation of its x-ray flux variation is $\approx$ 0.7% of its mean value, which is negligible compared to its radio flux variations. The phase resolved power spectrum of pulse to pulse x-ray flux variation shows no spectral feature; an upper limit to the peak of any possible broad spectral feature is 0.06% of the mean power. The x-ray fluxes in the two components of its integrated profile are unrelated to each other; their linear correlation coefficient is 0.0004$\pm$0.0010. ``Giant pulses'' that are routinely seen at radio wavelengths are absent here. This work sets very strong constraints on the connection (if any) between the flux variations at radio and x-ray energies, for example due to variation in the degree of coherence of the basic emitters. Its phase resolved x-ray flux variation shows a weak correlation with the integrated profile. If confirmed, this might be an important clue to understanding the x-ray emission mechanism of Crab pulsar.
No associations
LandOfFree
RXTE observations of single pulses of PSR B0531+21 I: Flux variations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with RXTE observations of single pulses of PSR B0531+21 I: Flux variations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and RXTE observations of single pulses of PSR B0531+21 I: Flux variations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-313123