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Faint X-Ray Sources Resolved in the ASCA Galactic Plane Survey and Their Contribution to the Galactic Ridge X-Ray Emission
The X-ray emission from the central region of the Galactic plane, |l| 45° and |b| 04, was studied in the 0.7-10 keV energy band with a spatial resolution of ~3' with the Advanced Satellite forExpand
Evidence for shock acceleration of high-energy electrons in the supernova remnant SN1006
HIGH-ENERGY cosmic rays (relativistic heavy nuclei) play an important role in heating interstellar matter in the Milky Way1,2, and they affect chemical abundances through collisions with atoms in theExpand
Brane-World Gravity
The observable universe could be a 1+3-surface (the “brane”) embedded in a 1+3+d-dimensional spacetime (the “bulk”), with Standard Model particles and fields trapped on the brane while gravity isExpand
Intense 6.7-keV iron line emission from the Galactic Centre
THE Galactic Centre, although obscured by dust at optical wavelengths, is luminous in higher-energy radiation. Gamma-ray observations suggest that a large number of supernovae or novae, or a singleExpand
X-Ray Properties of Early-Type Galaxies as Observed with ASCA
We have systematically investigated the Advanced Satellite for Cosmology and Astrophysics (ASCA) spectra of 12 early-type galaxies. This paper presents the global spectral properties of these systemsExpand
The DESI Experiment Part I: Science,Targeting, and Survey Design
DESI (Dark Energy Spectroscopic Instrument) is a Stage IV ground-based dark energy experiment that will study baryon acoustic oscillations (BAO) and the growth of structure through redshift-spaceExpand
Discovery of a Luminous, Variable, Off-Center Source in the Nucleus of M82 with the Chandra High-Resolution Camera
We present results from observations of the most famous starburst galaxy M82 with the High-Resolution Camera on board the Chandra X-Ray Observatory. We found nine sources in the central 1' × 1'Expand
Optically thin hot plasma near the Galactic center : mapping observations of the 6.7 keV iron line
Les resultats des observations de la raie d'emission 6.7 keV par le satellite Ginga en direction du centre galactique sont presentes. Cette raie d'emission est attribuable au fer de type helium dansExpand
The X-Ray Spectra of High-Luminosity Active Galactic Nuclei Observed by Ginga
Results are presented on the X-ray emission from 13 objects, observed by Ginga as part of a spectral survey of bright quasars in the energy range 2-20 keV. The distribution of the power-law energyExpand
X-Ray Evidence for Seyfert Activity Buried in the Infrared Galaxy NGC 4945
We have observed the infrared galaxy NGC 4945 using the Japanese X-ray astronomy satellite, Ginga. The X-ray spectrum is found to be composed of three components: hard X-ray emission which is heavilyExpand