Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-09-12
Astrophys.J.655:458-465,2007
Astronomy and Astrophysics
Astrophysics
Accepted for publication in The Astrophysical Journal
Scientific paper
10.1086/509319
Observations of the high-mass X-ray binary 4U 2206+54 with the Swift Burst Alert Telescope (BAT) do not show modulation at the previously reported period of 9.6 days found from observations made with the Rossi X-ray Timing Explorer (RXTE) All-Sky Monitor (ASM). Instead, the strongest peak in the power spectrum of the BAT light curve occurs at a period of 19.25 +/- 0.08 days, twice the period found with the RXTE ASM. The maximum of the folded BAT light curve is also delayed compared to the maximum of the folded ASM light curve. The most recent ASM data folded on twice the 9.6 day period show similar morphology to the folded BAT light curve. This suggests that the apparent period doubling is a recent secular change rather than an energy-dependent effect. The 9.6 day period is thus not a permanent strong feature of the light curve. We suggest that the orbital period of 4U 2206+54 may be twice the previously proposed value.
Corbet Robin H. D.
Markwardt Craig B.
Tueller Jack
No associations
LandOfFree
Swift/BAT and RXTE Observations of the Peculiar X-ray Binary 4U 2206+54 - Disappearance of the 9.6 Day Modulation 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 Swift/BAT and RXTE Observations of the Peculiar X-ray Binary 4U 2206+54 - Disappearance of the 9.6 Day Modulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Swift/BAT and RXTE Observations of the Peculiar X-ray Binary 4U 2206+54 - Disappearance of the 9.6 Day Modulation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-690782