Results 51 to 60 of about 225,473 (202)

X-ray astronomy [PDF]

Various experiments in X-ray astronomy are described. The occurrence of lunar occultations of the Crab Nebula were utilized to determine the spatial distribution of X-ray emitting regions in the nebula.
Novick, R.
core   +1 more source

Research in space science and technology [PDF]

Progress in various space flight research programs is reported. Emphasis is placed on X-ray astronomy and interplanetary plasma physics. Topics covered include: infrared astronomy, long base line interferometry, geological spectroscopy, space life ...
Beckley, L. E.
core   +1 more source

Heavily obscured AGN in the local Universe

, 2009
We present here a new powerful diagnostic plot to select heavily obscured AGN in the local universe by combining infrared (Spitzer, IRAS) and X-ray (XMM) information.
Caccianiga, A., Cusumano, G., Della Ceca, R., La Parola, V., Moretti, A., Severgnini, P., Vignali, C.   +6 more
core   +1 more source

Science with Simbol-X

, 2007
Simbol-X is a French-Italian mission, with a participation of German laboratories, for X-ray astronomy in the wide 0.5-80 keV band. Taking advantage of emerging technology in mirror manufacturing and spacecraft formation flying, Simbol-X will push ...
Arnaud, M., Briel, U., Cappi, M., Comastri, A., Decourchelle, A., Della Ceca, R., Ferrando, Ph., Feruglio, C., Fiore, F., Gilli, R., Giommi, P., Goldwurn, A., Grandi, P., Laurent, Ph., Lebrun, F., Malaguti, G., Micela, G., Pareschi, G., Piconcelli, E., Puccetti, S., Roques, J. -P., Tagliaferri, G., Vignali, C.   +22 more
core   +1 more source

Evolution of X-ray astronomy [PDF]

The evolution of X-ray astronomy up to the launching of the Einstein observatory is presented. The evaluation proceeded through the following major steps: (1) discovery of an extrasolar X-ray source, Sco X-1, orders of magnitude stronger than astronomers
Rossj, B.
core   +1 more source

A program of X-ray astronomy from sounding rocket Final report [PDF]

X-ray astronomy from sounding ...
Giacconi, R., Gorenstein, P., Gursky, H., Waters, J. R.   +3 more
core   +1 more source

Expectation for the Hard X-Ray and Gamma-Ray Emission from Pair-instability Supernovae

The Astrophysical Journal
Pair-instability supernovae (PISNe) are predicted thermonuclear explosions of massive stars with helium core masses exceeding ∼65 M _⊙ , and they synthesize substantial amounts of radioactive ^56 Ni ( M ( ^56 Ni) ∼ 60 M _⊙ in extreme cases).
Ryo Sawada
doaj   +1 more source

Implementation of a dual-phase grating interferometer for multi-scale characterization of building materials by tunable dark-field imaging

Scientific Reports
The multi-scale characterization of building materials is necessary to understand complex mechanical processes, with the goal of developing new more sustainable materials.
Caori Organista, Ruizhi Tang, Zhitian Shi, Konstantins Jefimovs, Daniel Josell, Lucia Romano, Simon Spindler, Pierre Kibleur, Benjamin Blykers, Marco Stampanoni, Matthieu N. Boone   +10 more
doaj   +1 more source

X-ray astronomy, 1 [PDF]

X ray ...
Holt, S. S.
core   +1 more source

Deep I-band Imaging of z=5.99 Quasar

, 2002
Deep I-band imaging was carried out to search for the optical counterpart of the X-ray jet candidate near SDSS 1306+0356, reported by Schwartz (2002, astro-ph/0202190).
Ivanov, Valentin D.
core   +1 more source