The Island state of the Atoll Source 4U 1820--30

Details The Island state of the Atoll Source 4U 1820--30 The Island state of the Atoll Source 4U 1820--30

2005-07-05

arxiv.org/abs/astro-ph/0507097v1

Astrophys.J.633:358-366,2005

Astronomy and Astrophysics

Astrophysics

21 pages, 8 Figures, submitted to ApJ

Scientific paper

10.1086/447761

We study the rapid X-ray time variability in all public data available from the \textit{Rossi X-ray Timing Explorer's} Proportional Counter Array on the atoll source 4U 1820--30 in the low-luminosity island state. A total of $\sim46$ ks of data were used. We compare the frequencies of the variability components of 4U 1820--30 with those in other atolls sources. These frequencies were previously found to follow a universal scheme of correlations. We find that 4U 1820--30 shows correlations that are shifted by factors of $1.13\pm0.01$ and $1.21\pm0.02$ with respect to those in other atoll sources. These shifts are similar to, but smaller than the shift factor $\sim1.45$ previously reported for some accreting millisecond pulsars. Therefore, 4U 1820--30 is the first atoll source which shows no significant pulsations but has a significant shift in the frequency correlations compared with other 3 non-pulsating atoll sources.

Affiliated with

Also associated with

No associations

Rating

The Island state of the Atoll Source 4U 1820--30 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 The Island state of the Atoll Source 4U 1820--30, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Island state of the Atoll Source 4U 1820--30 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-58956