Accession Number : AD0717671

Title :   Study of the Diffuse X-Ray Background Radiation in the Spectral Range from 44 to 100 A and the Determination of the Polarization of the X-Ray Emission from the Crab Nebula.

Descriptive Note : Final rept. 1 Mar 69-28 Feb 70,

Corporate Author : COLUMBIA UNIV NEW YORK COLUMBIA ASTROPHYSICS LAB

Personal Author(s) : Novick,Robert

Report Date : NOV 1970

Pagination or Media Count : 53

Abstract : A system for the detection of ultra-soft x rays (0.100 - 0.300 keV) employing grazing-incidence optics and thin window gas-flow proportional counters has been developed. This system is especially suited to photometric measurements of low-energy cosmic x-ray intensities. A rocket-borne x-ray polarimeter was flown to search for polarization in Taurus X-1. Although a result consistent with zero polarization was obtained, the statistics were such that x-ray polarization comparable in magnitude and direction to that of radio and optical continuum emission cannot be excluded. (Author)

Descriptors :   (*NEBULAE, X RAY SPECTRA), (*X RAYS, POLARIZATION), INTERSTELLAR MATTER, ULTRAVIOLET RADIATION, PHOTOMULTIPLIER TUBES, COLLIMATORS, SOUNDING ROCKETS

Subject Categories : Astrophysics

Distribution Statement : APPROVED FOR PUBLIC RELEASE