Abstract
The X-ray source 3U 1207+39, associated with the Seyfert galaxy NGC 4151, was observed for two days in 1974 November and again for six days in 1976 January by the University College London proportional counter spectrometer on the satellite Ariel-5. The observed intensity was significantly different from that reported from Uhuru data. A model relating the X-ray absorption and optical absorption lines is developed which suggests that the X-ray and optical sources are coincident and that the absorption takes place in a shell approx.5 x 10/sup 14/ cm thick and approx.4 x 10/sup 15/ cm in diameter. (AIP)
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
