Ultrasoft X-ray background observations of the Local Interstellar Medium

Technical Report · Wed Oct 31 23:00:00 EST 1984

OSTI ID:5925942

Sanders, W T; Snowden, S L; Bloch, J J; Juda, M; Jahoda, K M; Mccammon, D

Preliminary results from a May 8, 1984 sounding rocket survey of the soft X-ray background are presented. The X-ray detectors are sensitive to X-rays in three soft X-ray bandpasses: 80 to 110 eV, 90 to 188 eV, and 284 to 532 eV (at 20% of peak response). The lowest energy X-rays in this range have a mean free path of order 10 to the 19th power/sq cm and provide information about the Local Interstellar Medium. The count rate in the 80 to 110 eV energy band (the Be band) tracks the 90 to 188 (eV band (the B band) very well, indicating that the same approx. 1 million degree gas that is responsible for the B band emission may be responsible for the bulk of the Be band X-rays as well.

• Research Organization: Wisconsin Univ., Madison (USA)
• OSTI ID: 5925942
• Report Number(s): N-85-15571
• Country of Publication: United States
• Language: English

Related Subjects

640103* -- Astrophysics & Cosmology-- Quasi-Stellar
Radio
& X-Ray Sources-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BACKGROUND RADIATION
COSMIC GASES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
FLUIDS
FLUX DENSITY
GALAXIES
GASES
INTERSTELLAR SPACE
IONIZING RADIATIONS
MILKY WAY
RADIATIONS
SOFT X RADIATION
SPACE
SPATIAL DISTRIBUTION
SPECTRA
X RADIATION
X-RAY SPECTRA