Accession Number : AD0717665

Title :   Optical and Radio Investigations of Sources of Cosmic X-Rays.

Descriptive Note : Final rept.,

Corporate Author : LOCKHEED MISSILES AND SPACE CO PALO ALTO CALIF

Personal Author(s) : Johnson,Hugh M.

Report Date : 31 DEC 1969

Pagination or Media Count : 5

Abstract : The work of 1969 has been based primarily on four trips to observatories, where the observations were made as a guest investigator. The 36-inch and 60-inch CTIO reflectors were used for Photoelectric photometry with a special set of narrow-band filters on some identified X-ray sources and on what the author refers to as their 'analogues'--objects with optical peculiarities that somewhat resemble those of X-ray sources and so may shed light on them. The 50-inch and 16-inch KPNO reflectors were used with instrumentation practically identical to that at CTIO on T CrB, CH Cyg, Cyg X-2, and the field of nebulae within 18 degrees of Sco X-1. A new attack on the problem of the effect of interstellar absorption on the observed X-radiation of Sco X-1, and the inverse problem of the effect of the radiation of Sco X-1 on interstellar matter, has been the object of a 21-cm study of neutral hydrogen in the field of Sco X-1. The 48-inch Palomar Schmidt telescope was used as described in quarterly reports with a special pair of filters that pass lambda 4686.

Descriptors :   (*EXTRATERRESTRIAL RADIO WAVES, SOURCES), (*X RAYS, ASTROPHYSICS), INTERSTELLAR MATTER, NEBULAE, STARS, ASTRONOMICAL OBSERVATORIES

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE