X-ray spectral data from GX3 plus 1.
Galactic X ray source spectral data observed by rocket, presenting graph with corrections
Giacconi, R.↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Interstellar absorption of 10-angstrom X-rays.
Interstellar absorption of 10 A X rays from sources in Scorpio-Sagittarius region, noting gas density between earth and Crab Nebula
Bradt, H. V.↗
X-rays from the Coma cluster of galaxies
X ray source from Coma cluster of galaxies, interpreting observed flux on basis of missing mass suggested by Virial theorem
Felten, J. E.↗
Cosmic rays and cosmic X-rays. III
Cosmic rays and cosmic X rays, considering galactic and extragalactic sources, diffuse background, detection devices, etc
Felten, J. E.↗
X-ray and gamma-ray astronomy at the turning point
X and gamma ray astronomy instrumentation, point sources, continuum emission, line spectra, etc
Peterson, L. E.↗
A multiple-plate, multiple-pinhole camera for X-ray gamma-ray imaging
Plates with identical patterns of precisely aligned pinholes constitute lens system which, when rotated about optical axis, produces continuous high resolution image of small energy X-ray or gamma ray source. Camera has applications in radiation treatment and nuclear medicine.
Hoover, R. B.↗
Hard X-ray experiment for Astronomical Netherlands Satellite /ANS/ program Final report
Hard X ray experiment for Astronomical Netherlands Satellite to detect and measure X ray sources and line emission
Source record↗
Cosmic X-ray line emission
Statistical analysis of X ray line emission from cosmic radiation source
Holt, S. S.↗
Can the lumpy distribution of galaxies be reconciled with the smooth X-ray background
X ray background angular structure comparison with optical galaxies spatial distribution, ruling out universe models with sources following cosmological mass distribution
Burbidge, G. R.↗
Balloon-borne studies of X-ray emission from selected regions in the northern sky
Balloon-borne observation of X ray sources in northern sky, including Sco, Cyg and SN 1572
Reinert, C. P.↗
1-10 keV X-ray sky near the galactic centre
X ray sources identification and position measurements near galactic center on basis of rocket experiments
Bradt, H.↗
X-ray observations of pulsars
X ray observations of NP0532 and other radio pulsars and galactic X ray sources
Bradt, H.↗
X-ray spectrum of Scorpius X-1 obtained with a Bragg crystal spectrometer
X ray spectrum measurement of Scorpius X-1 by Bragg spectrometer, explaining emission or absorption absence by source model with line weakened by electron scattering
Angel, J. R. P.↗
Possibility of a 44 A line component in the diffuse cosmic X-ray flux
Line emission in diffuse cosmic X ray continuum, discussing probable interstellar or intergalactic matter source
Bowyer, C. S.↗
Discovery of periodic X-ray pulsations in Centaurus X-3 from UHURU
Large amplitude periodic X ray pulsations from Centaurus X-3, observing abrupt source intensity and pulse rate changes
Giacconi, R.↗
GX 349 plus 2 and GX 340 plus 0 - Locations and X-ray pulsation limits
X ray sources pulsation limits and locations determination by rocket-borne rotating modulation collimator
Doxsey, R.↗
Interaction of fast particles with intergalactic matter.
A discussion is given of the relaxation of power-law cosmic-ray spectra in the intergalactic medium. The theoretical time-dependent spectra obtained are used to calculate the nonthermal radiation produced by bremsstrahlung of subcosmic-ray electrons colliding with ambient protons of the intergalactic gas. A comparison is made between the theory and the observations of the diffuse X-ray and gamma-ray background. The calculated cosmic-ray proton spectra are applied to a computation of the heating of the intergalactic medium, and the resulting thermal bremsstrahlung radiation is compared with the suprathermal proton bremsstrahlung flux. We conclude that nonthermal bremsstrahlung is unlikely to be an important contributor to the isotropic X- and gamma-ray background. However, cosmic-ray heating can provide a plausible heat source for maintaining a hot intergalactic gas, especially when evolutionary effects are included in the distribution of cosmic-ray sources.
Arons, J.↗
Extragalactic cosmic rays.
A detailed analysis is given of the possibility that a large part of the primary cosmic-ray flux is of extragalactic origin. The problems encountered in theories of galactic cosmic rays are first critically discussed. The objections that have previously been raised to extragalactic theories, particularly on energetic grounds, are then examined. The general problem of the propagation of cosmic rays which are ejected from galactic nuclei or in galactic winds to fill clusters and superclusters is dealt with next. Attention is also given to the limits which are set on the presence of extragalactic cosmic rays by observations of high-energy electrons and background X-rays and gamma rays, or the heating of a hypothetical intergalactic gas. Observable effects of cosmic rays between galaxies are studied, and the possible sources of the local cosmic-ray protons in the extragalactic model are considered.
Brecher, K.↗