Filters
Results 1 - 10 of 8727
Results 1 - 10 of 8727.
Search took: 0.031 seconds
Sort by: date | relevance |
AbstractAbstract
[en] An historical account is given of major, telescopic instrument-related advancements in 20th-century astronomy, with attention to the roles played by leading figures in the various fields of astronomical research involved. These biographical treatments encompass David Heeshen and the development of the VLA; Riccardo Giacconi and the X-ray astronomy Uhuru, High Energy Astronomy Observatory, and X-ray Explorer, and Einstein Observatory satellites; Allan Jacobson and the Gamma Ray Observatory satellite; the involvements of Frank Low and Gerry Neugebauer in the development of the IR Astronomy Satellite; and C. R. O'Dell's organization of the NASA Space Telescope program. 62 references
Primary Subject
Source
1986; 228 p; Harvard University Press; Cambridge, MA (USA)
Record Type
Book
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Topics covered the setting; looking at the stars; the earth; time, place and the sky; our satellite, the moon; orbits and motion; the motions of the planets; the Copernican revolution; the planets; the other bodies of the solar system; ages, origins, and life; introducing the stars; sorting out the stars; binary stars--two are better than one; variable stars--inconstancy as a virtue; the secrets of starlight--unraveling the spectrum; the sun--our own star; the structure of a star; interstellar material; the Milky Way, our home galaxy; galaxies--the stellar continents; cosmic violence--from radio galaxies to quasars; the universe; and epilogue. The primary emphasis is on how we have come to know what we know about the universe. Star maps are included
Original Title
Book
Primary Subject
Source
1976; 504 p; W. H. Freeman and Co; San Francisco; ISBN 0-7167-0521-4; 

Record Type
Book
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Uhuru, the first X-ray astronomy satellite, was launched in 1970. Its instruments performed the first all sky survey in X-rays. Approximately half of the 400 sources discovered by Uhuru and its successor Ariel-5 are galactic objects: binary systems containing neutron stars and possibly blackholes, X-ray bursters, supernova remnants and transients. The extragalactic sources are mainly clusters of galaxies as well as Seyfert galaxies and BL Lac Objects. The identifications and follow-up studies of these sources have produced the main advances in X-ray astronomy in the first half of the 1970's. The follow-up surveys with the A-1, A-2 and A-4 instruments on HEAO-1, provided an increase in spectral coverage and somewhat higher sensitivities. The A-1 experiment detected more than 800 sources with fluxes 0.5 mCrab in the 1-25 keV band. In view of the limited positional resolution of the collimated detectors used in these missions, identifications have been a problem. In this context the rotation modulation collimators flown on SAS-3 and HEAO-1 (A-3 experiment) have played a major role. In this paper the author concentrates on some scientific and technical aspects of the X-ray sky survey. ROSAT is a German satellite with substantial US and UK (XUV wide field camera) contributions. The ROSAT X-ray optics consist of a fourfold nested mirror system of Wolter type I with 83 cm aperture having an intrinsic resolution of a few arcseconds. The focal plane assembly comprises two position sensitive proportional counters (PSPC) and one high resolution imager (HRI), which are mounted on a carousel. This paper also shows a cross section of the X-ray telescope
Primary Subject
Source
Shapiro, M.M; p. 241-248; ISBN 90-277-2144-0;
; 1986; p. 241-248; Kluwer Boston Inc; Hingham, MA (USA)

Record Type
Book
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Casolino, M.; Sparvoli, R.; Morselli, A.; Picozza, P.; Fuglesang, C.; Ozerov, Yu.V.; Zemskov, V.M.; Zverev, V.G.; Galper, A.M.
WIZARD collaboration : Papers presented at the 24. International Cosmic Ray Conference, August 28-September 8, Rome 19951995
WIZARD collaboration : Papers presented at the 24. International Cosmic Ray Conference, August 28-September 8, Rome 19951995
AbstractAbstract
[en] The capability of registration of the primary high energy cosmic ray gamma emission by a gamma-telescope made of an image calorimeter is shown in this paper. The problem of triggering and off-line identification of primary particles by the analysis of the electromagnetic showers induced in the calorimeter is under consideration. The estimations of the background flux of delayed secondaries induced by nuclear interactions are presented too
Primary Subject
Secondary Subject
Source
Istituto Nazionale di Fisica Nucleare, Frascati (Italy). Lab. Nazionale di Frascati; 86 p; Sep 1995; p. 31-34; 24. international cosmic ray conference; Rome (Italy); 28 Aug - 8 Sep 1995
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
Galeazzi, M.; Gatti, F.; Vitale, S.; McCammon, D.; Sanders, W.T.; Porter, F.S.; Szymkowiak, A., E-mail: galeazzi@wisp5.physics.wisc.edu2000
AbstractAbstract
[en] The proposal for an experiment on the International Space Station that will perform an all sky survey of the soft X-ray background for interstellar and intergalactic medium studies has been submitted to the Italian Space Agency (ASI). The goal of the experiment is to obtain spectroscopic information on the X-ray diffuse background in the energy range 30-1000 eV. This information will address many questions concerning the origin, composition, structure and evolution of the interstellar and intergalactic medium. The experiment will be installed on one of the outside mounting pallets of the Space Station looking at the local zenith with a field of view of 10 deg.
Primary Subject
Source
S016890029901387X; Copyright (c) 2000 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: Portugal
Record Type
Journal Article
Journal
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment; ISSN 0168-9002;
; CODEN NIMAER; v. 444(1-2); p. 268-272

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Kormendy, J.; Knapp, G.R.
International Astronomical Union1987
International Astronomical Union1987
AbstractAbstract
[en] Until recently little more was known than that dark matter appears to exist; there was little systematic information about its properties. Only in the past several years was progress made to the point where dark matter density distributions can be measured. For example, with accurate rotation curves extending over large ranges in radius, decomposing the effects of visible and dark matter to measure dark matter density profiles can be tried. Some regularities in dark matter behaviour have already turned up. This volume includes review and invited papers, poster papers, and the two general discussions. (Auth.)
Primary Subject
Secondary Subject
Source
Int. Astron. Union Symp; no. 117; 1987; 625 p; D. Reidel; Dordrecht (Netherlands); 117. Symposium of the International Astronomical Union; Princeton, NJ (USA); 24-28 Jun 1985; ISBN 90-277-2356-7;
; Includes names, objects and subjects index; refs.; figs.; tabs.

Record Type
Book
Literature Type
Conference
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Shang Zhaohui, E-mail: zshang@gmail.com2020
AbstractAbstract
[en] Dome A in Antarctica has been demonstrated to be the best site on earth for optical, infrared, and terahertz astronomical observations by more and more evidence, such as excellent free-atmosphere seeing, extremely low perceptible water vapor, low sky background, and continuous dark time, etc. In this paper, we present a complete picture of the development of astronomy at Dome A from the very beginning, review recent progress in time-domain astronomy, demonstrate exciting results of the site testing, and address the challenges in instrumentation. Currently proposed projects are briefly discussed. (paper)
Primary Subject
Source
Available from http://dx.doi.org/10.1088/1674-4527/20/10/168; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Research in Astronomy and Astrophysics; ISSN 1674-4527;
; v. 20(10); [32 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Lawrence, Earl; Wiel, Scott Vander; Law, Casey; Spolaor, Sarah Burke; Bower, Geoffrey C.
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Funding organisation: USDOE (United States)2017
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States). Funding organisation: USDOE (United States)2017
AbstractAbstract
[en] This paper presents the non-homogeneous Poisson process (NHPP) for modeling the rate of fast radio bursts (FRBs) and other infrequently observed astronomical events. The NHPP, well-known in statistics, can model dependence of the rate on both astronomical features and the details of an observing campaign. This is particularly helpful for rare events like FRBs because the NHPP can combine information across surveys, making the most of all available information. The goal of the paper is two-fold. First, it is intended to be a tutorial on the use of the NHPP. Second, we build an NHPP model that incorporates beam patterns and a power law flux distribution for the rate of FRBs. Using information from 12 surveys including 15 detections, we find an all-sky FRB rate of 587 events per sky per day above a flux of 1 Jy (95% CI: 272, 924) and a flux power-law index of 0:91 (95% CI: 0.57, 1.25).
Primary Subject
Source
LA-UR--16-26261; OSTIID--1417157; AC52-06NA25396; Available from http://www.osti.gov/pages/biblio/1417157; DOE Accepted Manuscript full text, or the publishers Best Available Version will be available free of charge after the embargo period
Record Type
Journal Article
Journal
Astronomical Journal (New York, N.Y. Online); ISSN 1538-3881;
; v. 154(3); vp

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The nuclear gamma astronomy is presented, in particular the Gamma Ray Observatory, an enormous eight tonnes machine fitted with gamma telescopes, scheduled for launching around 1985. It is thereby hoped to study the natural nuclear reactions which occur when stars explode
[fr]
On presente l'astronomie gamma nucleaire, et en particulier le Gamma Ray Observatory, un enorme engin de 8 tonnes equipe de telescopes gamma qui devrait etre lance vers 1985. On espere ainsi etudier les reactions nucleaires naturelles qui se produisent au cours de l'explosion des etoilesOriginal Title
L'astronomie des rayons gamma
Primary Subject
Record Type
Journal Article
Journal
Sciences et Avenir; (no.398); p. 69-75
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Soonthornthum, B; Kunjaya, C, E-mail: boonrucksar@narit.or.th, E-mail: kunjaya@yahoo.co.id2011
AbstractAbstract
No abstract available
Primary Subject
Source
S0143-0807(11)75496-4; Available from http://dx.doi.org/10.1088/0143-0807/32/4/S02; Abstract only; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
1 | 2 | 3 | Next |