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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-space
Brane-World Gravity
This review analyzes the geometry, dynamics and perturbations of simple brane-world models for cosmology and astrophysics, mainly focusing on warped 5-dimensional brane -worlds based on the Randall-Sundrum models.
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 systems
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'
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 dans
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 heavily
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 energy
A Possible Site of Cosmic Ray Acceleration in the Supernova Remnant IC 443
We present evidence for shock acceleration of cosmic rays to high energies (~10 TeV) in the supernova remnant IC 443. X-ray imaging spectroscopy with ASCA reveals two regions of particularly hard
Dynamical dark energy in light of the latest observations
A flat Friedmann–Robertson–Walker universe dominated by a cosmological constant (Λ) and cold dark matter (CDM) has been the working model preferred by cosmologists since the discovery of cosmic
Spectra and pulse period of the binary X-ray pulsar 4U 1538-52
The 530 s binary X-ray pulsar 4U 1538-52 was observed from the X-ray astronomy satellite Tenma in 1983 June-July. An improved orbital ephemeris was derived. Also, high-quality X-ray spectra were