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Topic: Quasars
Typescript
Topic: Quasars
50
50
May 17, 2012
05/12
by
Burbidge, Geoffrey R; Burbidge, E. Margaret, joint author
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Bibliography: p. [221]-228
Topic: Quasars
4
4.0
Oct 11, 2021
10/21
by
International Astronomical Union. Symposium (119th : 1985 : Bangalore, India)
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xx, 605 p. : 25 cm
Topic: Quasars -- Congresses
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3.0
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xvi, 378 p. : 24 cm
Topic: Quasars -- Congresses
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6.0
Jun 20, 2020
06/20
by
Owen, Ruth, 1967-
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32 p. : 29 cm
Topic: Quasars -- Juvenile literature
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65
Nov 28, 2018
11/18
by
Kaufmann, William J
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x, 226 pages : 24 cm
Topics: Galaxies, Quasars, Sterrenstelsels
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16
Jun 25, 2020
06/20
by
Weedman, Daniel W
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xiii, 217 p. : 24 cm
Topics: Quasars, Radio astronomy
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Topics: Quasars, Radio sources (Astronomy)
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Topics: Quasars, Radio sources (Astronomy)
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2.0
Sep 20, 2021
09/21
by
Geryl, Patrick
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152 p. : 22 cm
Topics: Quasars, Cosmology, Space and time
Particle entanglement is one of quantum mechanics’ strangest predictions. In fact, physicists have been trying to disprove it ever since they predicted it about 80 years ago. Here to untangle the issue for us is Dr. Jason Gallicchio, postdoctoral fellow at the University of Chicago. He’ll help us understand exactly what it means for particles to be entangled and how he proposes to use quasars to test one of the only remaining alternative explanations for this counterintuitive phenomenon...
Topics: quantum mechanics, entanglement, groks, quasars
Source: Groks Science Radio Show Podcast
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10.0
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vii, 221 p. : 23 cm
Topics: Galaxies -- Congresses, Cosmology -- Congresses, Quasars -- Congresses
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151
audio
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Lo llevabamos anunciando en los ultimos programas y aqui los tenemos!!! THE QUASARS, rockabilly puro y duro! Uno de los grupos que se está haciendo su propio hueco dentro de la movida rocker en Bcn y que en La Isla hemos querido darles voz y conocerlos. Hablaremos con ellos... escucharemos sus canciones... y comentaremos la escena rockabilly actual y sus mejores festivales. Salud y R'n'R!!
Topics: la isla, rock'n'roll, rockabilly, the quasars
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9.0
Jul 2, 2020
07/20
by
Longair, M. S., 1941-
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128 p. : 24 cm
Topics: Stars -- Evolution, Galaxies -- Evolution, Quasars, Cosmology
117
117
Nov 25, 2013
11/13
by
Begelman, Mitchell C; Rees, Martin J., 1942-
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Includes bibliographical references (page 240) and index
Topics: Black holes (Astronomy), Quasars, Schwarzes Loch
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5.0
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vi, 317 pages : 24 cm
Topics: Quasars -- Congresses, Galactic nuclei -- Congresses, Nuclear astrophysics -- Congresses, Quasars...
16
16
Nov 17, 2019
11/19
by
Asimov, Isaac, 1920-1992
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32 pages : 27 cm
Topics: Quasars -- Juvenile literature, Black holes (Astronomy) -- Juvenile literature, Cuasares --...
5
5.0
Jun 16, 2022
06/22
by
Weedman, Daniel W
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[232] pages
Topics: Quasars, Astronomia, Astronomia (Dados Atomicos/Moleculares), Radioastronomia, Radio astronomy
99
99
Sep 4, 2009
09/09
by
Shipman, Harry L
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Includes bibliographical references and index
Topics: Black holes (Astronomy), Quasars, Cosmology, Trous noirs (Astronomie), Cosmologie
Typescript
Topics: Quasars, N stars, Optical measurements, Variable stars, Pulsating stars
378
378
Jun 9, 2011
06/11
by
Nichols, J.; Mendygral, P
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FUSE observations of four stars in the line of sight to the Cyg OB1 IR-detected superbubble have been analyzed for high-velocity features in the O VI interstellar lines, which might be attributed to the shock structure of the superbubble. Multiple components were detected in the spectra of all four stars, with a velocity range of -85 kilometers per second to 29 kilometers per second. As many as four separate velocity components were identified in each spectrum, implying multiple shock...
Topics: HUBBLE CONSTANT, X RAY ASTRONOMY, BIBLIOGRAPHIES, QUASARS, GRAVITATIONAL LENSES
26
26
Jun 26, 2020
06/20
by
Berger, Melvin
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57 pages : 23 cm
Topics: Quasars -- Juvenile literature, Pulsars -- Juvenile literature, Black holes (Astronomy) -- Juvenile...
We summarize a study of PKS 0920-397 using our 42 ks Chandra observation in conjunction with our ATCA 20GHz image, and HST/ACS F814W and F475W images. We investigate the hypothesis that the jet X-ray emission is due to inverse-Compton (IC) scattering on the cosmic microwave background (CMB) from the same population of relativistic electrons that give rise to the radio emission. To calculate parameters intrinsic to the source, one must finesse the fact that we do not know the true angle of the...
Topics: DTIC Archive, NAVAL OBSERVATORY WASHINGTON DC, *QUASARS, EMISSION, X RAYS
291
291
Jun 27, 2010
06/10
by
Chreitzberg, A. M
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Elimination of two step voltage discharge property of silver zinc batteries by using divalent silver oxide capacity of cell to charge anodes to monovalent silver state
Topics: BACKGROUND RADIATION, ELECTRONS, GALACTIC RADIATION, COSMIC RAYS, QUASARS, RADIO GALAXIES
As part of the USNO radio-optical reference frame link project, data were taken with the CTIO 1.0 m telescope in 2009. First position results of 5 ICRF sources are presented as part of this primarily photometric investigation of optical counterparts.
Topics: DTIC Archive, NAVAL OBSERVATORY WASHINGTON DC, *QUASARS, OPTICAL PROPERTIES, PHOTOMETRY
226
226
Jul 12, 2010
07/10
by
NON
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No Abstract Available
Topics: ASTRONOMICAL CATALOGS, QUASARS, RADIO ASTRONOMY, VERY LONG BASE INTERFEROMETRY, VOYAGER PROJECT
1,394
1.4K
Jul 6, 2010
07/10
by
LICHTE, M
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THE AERODYNAMIC CHARACTERISTICS OF SLENDER DELTA WINGS FOR SUBSONIC COMMERCIAL AIRCRAFT APPLICATIONS ARE DISCUSSED. THE FLOW DISTRIBUTION ON THE WING FOR VARIOUS AIRSPEED CONDITIONS IS DESCRIBED. THE CHARACTERISTICS OF CONVENTIONAL WINGS ARE COMPARED WITH THOSE OF THE SLENDER DELTA WING. GRAPHS OF THE PERFORMANCE OF THE SLENDER DELTA WING FOR VARIOUS CONDITIONS OF GROUND EFFECT, ANGLE OF ATTACK, GLIDE CONDITIONS, AND AERODYNAMIC STALL ARE INCLUDED.
Topics: QUASARS, RADIO GALAXIES, RADIO INTERFEROMETERS, ANGULAR RESOLUTION, BRIGHTNESS TEMPERATURE, RADIO...
869
869
Jul 11, 2010
07/10
by
Varvarov, N. A
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Contemporary scientific concepts about the origin of the earth and the planets of our solar system are discussed along with the satellites of the planets, the minor planets, meteoric objectives, bolides, and meteorites. Why spacecraft are used to study the sun, its accompanying planets, and their satellites is explained. Data about the surface and atmosphere of Mars and Venus and the seasons, days, and climate of these planets are included. Data are given for the contemporary cosmodromes and...
Topics: LIGHT SPEED, QUASARS, RADIO GALAXIES, ASTRONOMICAL MODELS, RADIO ASTRONOMY, RELATIVISTIC VELOCITY
217
217
Jun 1, 2011
06/11
by
Carr, Francis; Evans, Antony; Feron, Eric; Clarke, John-Pau
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A simple, portable and useful collection of software tools has been developed for the analysis of airport surface traffic. The tools are based on a flexible and robust traffic-flow model, and include calibration, validation and simulation functionality for this model. Several different interfaces have been developed to help promote usage of these tools, including a portable Matlab(TM) implementation of the basic algorithms; a web-based interface which provides online access to automated...
Topics: QUASARS, DEPOSITION, BLACK HOLES (ASTRONOMY), BIBLIOGRAPHIES, ELECTROMAGNETIC ABSORPTION, EMISSION...
255
255
Jul 6, 2010
07/10
by
LEGENDRE, R
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THE KUTTA-JOUKOWSKY CONDITION IN THREE DIMENSIONAL FLOW IS DISCUSSED. THE CHARACTERISTICS OF THE SEPARATION LINE ALONG WHICH A VORTEX SHEET IS ATTACHED ON A WING ARE EXAMINED. FROM OBSERVATIONS OF THE FLOW OVER MARINE PROPELLERS AND DELTA WING MODELS, A DISCUSSION IS PRESENTED TO IMPROVE THE DESCRIPTION OF THE FLOW OVER ANY WING AND TO PROVIDE A BETTER BASIS FOR ACCURATE CALCULATIONS OF THE PERFECT FLUID FLOW USED AS A REFERENCE.
Topics: QUASARS, RADIO INTERFEROMETERS, RADIO STARS, BRIGHTNESS TEMPERATURE, RADIO ASTRONOMY, RADIO SOURCES...
485
485
May 23, 2011
05/11
by
Kreider, Kevin L.; Baumeister, Kenneth J
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An explicit finite difference real time iteration scheme is developed to study harmonic sound propagation in aircraft engine nacelles. To reduce storage requirements for future large 3D problems, the time dependent potential form of the acoustic wave equation is used. To insure that the finite difference scheme is both explicit and stable for a harmonic monochromatic sound field, a parabolic (in time) approximation is introduced to reduce the order of the governing equation. The analysis begins...
Topics: QUASARS, HUBBLE SPACE TELESCOPE, SPACEBORNE ASTRONOMY, GALAXIES, SENSITIVITY, LUMINOSITY,...
395
395
Jul 26, 2010
07/10
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Nahum, Michael; Verghese, S.; Hu, Qing; Richards, Paul L.; Char, K.; Newman, N.; Sachtjen, Scott A
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The rapid change of resistance with temperature of high quality films of high T sub c superconductors can be used to make resistance thermometers with very low temperature noise. Measurements on c-axis yttrium barium copper oxide (YBCO) films have given a spectral intensity of temperature noise less than 4 times 10(exp -8) K/Hz(exp 1/2) at 10 Hz. Consequently, the opportunity exists to make useful bolometric infrared detectors that operate near 90 K which can be cooled with liquid nitrogen. The...
Topics: ABSORPTION SPECTRA, CONVERGENCE, LYMAN SPECTRA, QUASARS, DAMPING, HYDROGEN, NEUTRAL GASES, SPECTRUM...
161
161
Jun 17, 2010
06/10
by
Ozernoy, L. M
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Magnetic bremmsstrahlung in variable field as mechanism for changing radiance of quasi-stellar radio sources
Topics: BREMSSTRAHLUNG, MAGNETIC FIELDS, PERIODIC VARIATIONS, QUASARS, RADIANCE, BREMSSTRAHLUNG,...
We present an all-sky sample of approx. equal 1.4 million active galactic nuclei (AGNs) meeting a two-color infrared photometric selection criteria for AGNs as applied to sources from the Wide-field Infrared Survey Explorer final catalog release (AllWISE). We assess the spatial distribution and optical properties of our sample and find that the results are consistent with expectations for AGNs. These sources have a mean density of approx. equal 38 AGNs per square degree on the sky, and their...
Topics: DTIC Archive, NAVAL OBSERVATORY WASHINGTON DC, *GALAXIES, CATALOGS, INFRARED STARS, OPTICAL...
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260
May 24, 2011
05/11
by
Maghami, Peiman G.; Giesy, Daniel P
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An efficient and robust computational scheme is given for the calculation of the frequency response function of a large order, flexible system implemented with a linear, time invariant control system. Advantage is taken of the highly structured sparsity of the system matrix of the plant based on a model of the structure using normal mode coordinates. The computational time per frequency point of the new computational scheme is a linear function of system size, a significant improvement over...
Topics: OPTICAL MEASUREMENT, QUASARS, ROSAT MISSION, X RAYS, X RAY ABSORPTION, LINE SPECTRA, DETECTION
23
23
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10 volumes : 26 cm
Topics: Milky Way -- Juvenile literature, Universe -- Juvenile literature, Milky Way, Universe, Deep space...
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14
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10 volumes : 26 cm
Topics: Milky Way -- Juvenile literature, Universe -- Juvenile literature, Milky Way, Universe, Deep space...
428
428
Jul 25, 2010
07/10
by
NON
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Abstracts are provided for 124 patents and patent applications entered into the NASA scientific and technical information systems during the period July 1988 through December 1988. Each entry consists of a citation, an abstract, and in most cases, a key illustration selected from the patent or patent application.
Topics: ASTROPHYSICS, BLACK HOLES (ASTRONOMY), FLUIDS, GALACTIC EVOLUTION, MISSING MASS (ASTROPHYSICS),...
240
240
May 23, 2011
05/11
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Christopher, Sundar A.; Vulcan, Donna V.; Welch, Ronald M
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Atmospheric aerosol particles play a vital role in the Earth's radiative energy budget. They exert a net cooling influence on climate by directly reflecting the solar radiation to space and by modifying the shortwave reflective properties of clouds. Each year, increasing amounts of aerosol particles are released into the atmosphere due to biomass burning, dust storms, forest fires, and volcanic activity. These particles significantly perturb the radiative balance on local, regional, and global...
Topics: BRIGHTNESS, GALACTIC CLUSTERS, QUASARS, RED SHIFT, STELLAR SYSTEMS, HUBBLE SPACE TELESCOPE,...
440
440
Jul 11, 2010
07/10
by
IPPOLITO, F.; NATALI, P. G
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RECENT STUDIES HAVE SHOWN THAT IT IS POSSIBLE TO ELICIT IN EXPERIMENTAL ANIMALS AN ANTIBODY RESPONSE TO MOLECULES OF NUCLEIC ACIDS IRRADIATED WITH ULTRAVIOLET LIGHT. THE ANTIBODIES OBTAINED SHOW AN ELECTIVE SPECIFICITY FOR THE PHOTOPRODUCTS OF THE THYMIC BASE OF DEOXYRIBONUCLEIC ACID. THE USE OF THESE ANTIBODIES IN INDIRECT IMMUNOFLUORESCENCE METHODS HAS BEEN A VALUABLE AID IN STUDYING THE EFFECTS OF ULTRAVIOLET IRRADIATION ON ANIMALS EXPOSED IN VIVO TO SUCH RADIANT ENERGIES. IT WAS ASCERTAINED...
Topics: COMPTON EFFECT, PHOTON-ELECTRON INTERACTION, RELATIVISTIC PARTICLES, ELECTRON SCATTERING, GALACTIC...
79
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Aug 6, 2010
08/10
by
Golden, Frederic
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Bibliography: p. 193-196
Topics: Stars, Interstellar hydrogen, Quasars, Pulsars, Trous noirs (Astronomie), Étoiles, Hydrogène...
We present three complete seasons and two half-seasons of Sloan Digital Sky Survey (SDSS) r-band photometry of the gravitationally lensed quasar SBS 0909+532 from the U.S. Naval Observatory, as well as two seasons each of SDSS g-band and r-band monitoring from the Liverpool Robotic Telescope. Using Monte Carlo simulations to simultaneously measure the system s time delay and model the r-band microlensing variability, we confirm and significantly refine the precision of the system s time delay...
Topics: DTIC Archive, NAVAL ACADEMY ANNAPOLIS MD DEPT OF PHYSICS, *DISKS, *LENSES, *QUASARS, PHOTOMETRY,...
The large number and all-sky distribution of quasars from different surveys, along with their presence in large, deep astrometric catalogs, enables us to build of an optical materialization of the International Celestial Reference System (ICRS) following its defining principles. Namely: that it is kinematically non-rotating with respect to the ensemble of distant extragalactic objects; aligned with the mean equator and dynamical equinox of J2000; and realized by a list of adopted coordinates of...
Topics: DTIC Archive, NATIONAL OBSERVATORY (BRAZIL), *QUASARS, *CATALOGS, RELATIONAL DATA BASES, REPRINTS,...
7
7.0
Aug 24, 2021
08/21
by
Herstmonceux Conference (37th : 1996 : Cambridge, England)
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xxvi, 466 pages, [1] folded leaf of plates : 22 cm
Topics: Hubble Space Telescope (Spacecraft) -- Congresses, Hubble Space Telescope (Spacecraft), Hubble...
The observations that were performed as part of the award titled: Constraints on Ho From Time-Delay Measurements of PG1115+080 resulted in several scientific publications and presentations. We list these publications and presentations and provide brief description of the important science presented in them.
Topics: NASA Technical Reports Server (NTRS), HUBBLE CONSTANT, X RAY ASTRONOMY, BIBLIOGRAPHIES, QUASARS,...
An in-progress investigation aimed at characterizing the X-ray luminosity of very faint QSOs is described. More than 100 faint, previously uncataloged QSOs which lie in areas imaged in X rays at very high sensitivity were discovered.
Topics: NASA Technical Reports Server (NTRS), HEAO 2, LUMINOSITY, X RAYS, IMAGING TECHNIQUES, QUASARS,...
169
169
Jul 23, 2010
07/10
by
Meierov, M. V
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No Abstract Available
Topics: COSMOLOGY, QUASARS, STAR FORMATION, STELLAR EVOLUTION, CHAOS, GALACTIC NUCLEI, GRAVITATIONAL WAVES,...
8
8.0
Mar 23, 2022
03/22
by
Open University S104/Book 7
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Book 7 of Open University course S104 Exploring science
Topics: Science, Cosmology, Universe, Quarks, Quasars, Particles (Nuclear physics), Quantum theory,...
The Astrophysics of Reference Frame Tie Objects Key Science program will investigate the underlying physics of SIM grid objects. Extragalactic objects in the SIM grid will be used to tie the SIM reference frame to the quasi-inertial reference frame defined by extragalactic objects and to remove any residual frame rotation with respect to the extragalactic frame. The current realization of the extragalactic frame is the International Celestial Reference Frame (ICRF). The ICRF is defined by the...
Topics: DTIC Archive, Johnston, Kenneth J, NAVAL OBSERVATORY WASHINGTON DC, *STARS, GRIDS, ASTRONOMY,...
