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The complete z-diagram of lmc x-2
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Smale, A. P. White, Nicholas E. Technical Monitor Homan, J. Kuulkers, E. |
| Copyright Year | 2003 |
| Description | We present results from four Rossi X-ray Timing Explorer (RXTE) observations of the bright low mass X-ray binary LMC X-2. During these observations, which span a year and include over 160 hrs of data, the source exhibits clear evolution through three branches on its hardness-intensity and color-color diagrams, consistent with the flaring, normal, and horizontal branches (FB, NB, HB) of a Z-source, and remarkably similar to Z-tracks derived for GX 17+2, Sco X-1 and GX 349+2. LMC X-2 was observed in the FB, NB, and HB for roughly 30%, 40%, and 30% respectively of the total time covered. The source traces out the full extent of the Z in approximately 1 day, and the Z-track shows evidence for secular shifts on a timescale in excess of a few days. Although the count rate of LMC X-2 is low compared with the other known 2-sources due to its greater distance, the power density spectra selected by branch show very-low-frequency noise characteristics at least consistent with those from other Z-sources. We thus confirm the identification of LMC X-2 as a Z-source, the first identified outside our Galaxy. |
| File Size | 549789 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20030025362 |
| Archival Resource Key | ark:/13960/t6741qs1v |
| Language | English |
| Publisher Date | 2003-01-30 |
| Access Restriction | Open |
| Subject Keyword | Astronomy Mass Neutron Stars Power Spectra Galaxies X Ray Binaries Variability Very Low Frequencies Color-color Diagram Space Observations From Earth Light Curve X Ray Timing Explorer Accretion Disks Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
