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Spectra of cosmic x-ray sources
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Holt, S. S. McCray, R. |
| Copyright Year | 1982 |
| Description | X-ray measurements provide the most direct probes of astrophysical environments with temperatures exceeding one million K. Progress in experimental research utilizing dispersive techniques (e.g., Bragg and grating spectroscopy) is considerably slower than that in areas utilizing photometric techniques, because of the relative inefficiency of the former for the weak X-ray signals from celestial sources. As a result, the term "spectroscopy" as applied to X-ray astronomy has traditionally satisfied a much less restrictive definition (in terms of resolving power) than it has in other wavebands. Until quite recently, resolving powers of order unity were perfectly respectable, and still provide (in most cases) the most useful spectroscopic data. In the broadest sense, X-ray photometric measurements are spectroscopic, insofar as they represent samples of the overall electromagnetic continua of celestial objects. |
| File Size | 6379163 |
| Page Count | 75 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19820017211 |
| Archival Resource Key | ark:/13960/t7tn2230n |
| Language | English |
| Publisher Date | 1982-02-01 |
| Access Restriction | Open |
| Subject Keyword | Space Radiation Stellar Spectra Neutron Stars White Dwarf Stars Stellar Mass X Ray Spectroscopy Cosmic Gases X Ray Astronomy Magnetic Fields Stellar Coronas Deposition Black Holes Astronomy Galactic Nuclei Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
