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All-sky monitor observations of flares from aquila x-1
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Serlemitsos, P. J. Boldt, E. A. Holt, S. S. Kaluzienski, L. J. |
| Copyright Year | 1976 |
| Description | The All-Sky Monitor on Ariel 5 has observed the Aquila-Serpens region on a quasi-continuous basis since launch in 1974 October. During this time Aql X-1 exhibited major flares in 1975 June and 1976 June, with the measured X-ray intensities increasing more than an order of magnitude to approximately that measured from the Crab nebula, and remaining above the experiment threshold (approximately 0.1 x s crab) for almost two months in both instances. These outbursts resemble the X-ray light curves of transient sources such as A0620-00 and are interpreted in terms of episodic accretion in a dwarf nova-like binary. Combination of the epoch of phase minimum for the 1.3d period (1976) with the 1975 data yields a value of P = 1.28d + or - 0.02d with a corresponding modulation of approximately 3% (3-6 keV). Modulation at this period is not apparent in the 1976 data, with an upper limit of 2% during that time. |
| File Size | 626691 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19760026014 |
| Archival Resource Key | ark:/13960/t0vq7qk93 |
| Language | English |
| Publisher Date | 1976-10-01 |
| Access Restriction | Open |
| Subject Keyword | Astronomy All Sky Photography Crab Nebula Binary Stars Novae Ariel 5 Satellite Flares Dwarf Stars X Ray Astronomy Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
