Loading...
Please wait, while we are loading the content...
Similar Documents
Super-Orbital Variability in Hard X-rays
| Content Provider | Semantic Scholar |
|---|---|
| Author | Barret, Didier |
| Copyright Year | 2008 |
| Abstract | We present the results of a study with the Swift Burst Alert Telescope in the 14 – 195 keV range of the long-term variability of 5 low mass X-ray binaries with reported or suspected super-orbital periods — 4U 1636-536, 4U 1820-303, 4U 1916-053, Cyg X-2 and Sco X-1. No significant persistent periodic modulation was detected around the previously reported periods in the 4U 1916-053, Cyg X-2 or Sco X-1 light curves. The ∼170 d period of 4U 1820-303 was detected up to 24 keV, consistent with variable accretion due to the previously proposed triple system model. The ∼46 d period in 4U 1636-536 was detected up to 100 keV, with the modulation in the low and high energy bands found to be phase shifted by ∼180◦ with respect to each other. This phase shift, when taken together with the near-coincident onset of the ∼46 d modulation and the low/hard X-ray state, leads us to speculate that the modulation could herald transient jet formation. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/0810.5311v1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Alert:Type:Point in time:^Patient:Nominal Bands Batch file Delta modulation Diagnostic radiologic examination Electronic band structure Kiloelectronvolt Molecular orbital Onset (audio) Photoelectric effect Rajiformes Spatial variability Spindle Cell Oncocytoma of the Adenohypophysis Swift (programming language) X-Ray (Amazon Kindle) wavelength |
| Content Type | Text |
| Resource Type | Article |
