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Coordinated observations of x-ray bright bl lacertae objects
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Urry, C. M. |
| Copyright Year | 1985 |
| Description | Simultaneous multifrequency observations of the BL Lac object Mkn421 covering radio through X-ray wavelengths were performed. Composite multifrequency spectra of the central nonthermal component were obtained at the two epochs after subtracting the optical and infrared light of the underlying galaxy. Physical parameters of Mkn421 are discussed in terms of the synchrotron self-Compton model. Taking the spectral turnover between infrared and radio for synchrotrom self absorption, the radio emmision originates in a more extended region than the infrared to X-ray emission, the source size of which should be less than .01 milliarcseconds. Relativistic beaming is required if the angular size is smaller than a few times .001 milliarcseconds. A possible explanation of the spectral change during the two epochs is also discussed. |
| File Size | 1443793 |
| Page Count | 50 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19860018565 |
| Archival Resource Key | ark:/13960/t2g788d38 |
| Language | English |
| Publisher Date | 1985-01-01 |
| Access Restriction | Open |
| Subject Keyword | Astronomy Heao 1 Bl Lacertae Objects Ultraviolet Spectra Proportional Counters Infrared Spectra Radio Sources Astronomy Luminous Intensity Scintillation Counters Flux Density Spectrum Analysis Astronomical Models Iue Polarization Waves X Ray Sources Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
