6
6.0
Dec 11, 2019
12/19
by
Mather, John C
texts
eye 6
favorite 0
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xxi, 328 p. : 24 cm
Topic: Cosmic background radiation
5
5.0
Nov 11, 2020
11/20
by
Mather, John C
texts
eye 5
favorite 1
comment 0
xxi, 353 p. : 24 cm
Topic: Cosmic background radiation
17
17
Dec 10, 2019
12/19
by
Mather, John C
texts
eye 17
favorite 0
comment 0
xxi, 353 p. : 24 cm
Topic: Cosmic background radiation
3
3.0
Feb 18, 2021
02/21
by
Mather, John C
texts
eye 3
favorite 0
comment 0
xxi, 328 p. : 24 cm
Topic: Cosmic background radiation
102
102
Jul 3, 2019
07/19
by
Giovannini, Massimo, 1968-
texts
eye 102
favorite 0
comment 0
xiv, 474 p. : 24 cm
Topic: Cosmic background radiation
13
13
Aug 8, 2019
08/19
by
Lachièze-Rey, Marc
texts
eye 13
favorite 0
comment 0
xii, 247 p. ; 24 cm
Topics: Astrophysics, Cosmic background radiation
Source: removedNEL
282
282
Jun 17, 2010
06/10
by
NON
texts
eye 282
favorite 0
comment 0
Radiation studies - measurements of Kramer radiation, measurements of atomic line and background radiation, and radiation tables
Topics: BACKGROUND RADIATION, NUCLEAR RADIATION, RADIATION MEASUREMENT, BACKGROUND RADIATION, RADIATION...
11
11
Sep 22, 2020
09/20
by
Partridge, R. B
texts
eye 11
favorite 0
comment 0
xix, 373 pages : 25 cm
Topics: Cosmic background radiation, Electromagnetic waves
185
185
Jul 20, 2012
07/12
by
Marcus Chown
texts
eye 185
favorite 5
comment 0
Topics: Cosmic ripples, Cosmic background radiation
885
885
texts
eye 885
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INFORMATION ABOUT THE PHYSICAL PROPERTIES OF THE ATMOSPHERES AND THE INTERNAL STRUCTURE OF THE GIANT PLANETS (JUPITER, SATURN, URANUS, AND NEPTUNE) IS PRESENTED. THIS INFORMATION IS BASED MAINLY ON THE DATA OF ASTROPHYSICAL OBSERVATIONS AND IN PART ON THEORETICAL CALCULATIONS. ALL THE DATA ARE PRESENTED IN THE FORM OF TABLES AND GRAPHS, ACCOMPAINED ONLY BY SHORT EXPLANATIONS. AN EXTENSIVE GUIDE TO THE LITERATURE ON THE GIANT PLANETS IS ALSO PRESENTED, INCLUDING MAINLY PAPERS PUBLISHED DURING...
Topics: ANISOTROPY, BACKGROUND RADIATION, BOLOMETERS, COSMOLOGY, RELATIVISTIC VELOCITY
12
12
Nov 6, 2020
11/20
by
Lachièze-Rey, Marc
texts
eye 12
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comment 0
xii, 247 pages ; 24 cm
Topics: Cosmic background radiation, Astrophysics, Rayonnement cosmologique, Astrophysique, COSMIC RAYS,...
59
59
Nov 19, 2015
11/15
by
Vic Christianto, Florentin Smarandache
texts
eye 59
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In the light of some recent hypotheses suggesting plausible unification of thermostatistics where Fermi-Dirac, Bose-Einstein and Tsallis statistics become its special subsets, we consider further plausible extension to include non-integer Hausdorff dimension, which becomes realization of fractal entropy concept. In the subsequent section, we also discuss plausible extension of this unified statistics to include anisotropic effect by using quaternion oscillator, which may be observed in the...
Topics: unification of thermostatistics, Cosmic Microwave Background Radiation
85
85
Jul 2, 2012
07/12
by
Mather, John C; Boslough, John
texts
eye 85
favorite 2
comment 0
Includes bibliographical references (pages 312-315) and index
Topics: COBE, Cosmic background radiation, Rayonnement cosmique primordial, Rayonnement cosmique
5
5.0
Nov 20, 2021
11/21
by
Nobel Conference (27th : 1991 : Gustavus Adolphus College)
texts
eye 5
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x, 159 p. : 24 cm
Topics: Cosmology -- Congresses, Olbers' paradox -- Congresses, Cosmic background radiation -- Congresses
290
290
Jun 27, 2010
06/10
by
Chreitzberg, A. M
texts
eye 290
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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
The measurement of background ionising radiation levels within Gwagwalada Town, Abuja has been carried out using Atomtex 1117M Radiation Monitor in twelve different locations. Twenty different readings were taken at each location and the mean equivalent dose rate was used to calculate the annual equivalent dose rate. A total of 240 measurements were taken across the 12 locations in the study Area. It was observed that the average dose equivalent varied from 0.105±0.008 μSv/h to 0.114±0.015...
Topics: Ionising Radiation, Radiation Monitor, Equivalent Dose, Background Radiation, Dose Limit
The Background Measurements and Analysis program (BMAP) operated mostly by Naval Surface Weapons Center (NSWC) is a program of measurement and analysis of background scenes appropriate to generic infrared imaging systems. A computer code generated under contract, for this program, has been made available to NACIT (Naval Academic Center for Infrared Technology) at Naval Postgraduate School (NPS) by NSWC. This code includes two stored measurement data sets for 2 dimensional Fast Fourier Transform...
Topics: Physics, Background radiation, Radiation measurements, BMAP analysis, Infrared data transfer
Thermal images of an instrumented ship target against a sea background have been recorded under varying environmental conditions, using an AGA Thermovision 780 radiometric imaging system with digital data recording. Data were obtained in the 8 -14 um spectral band at an angle of incidence of approximately 89 degrees against the sea background. These pictures have been analyzed together with measured target emissivity and meteorological parameters to give the temperature and radiance...
Topics: Physics, Thermal measurement, Infrared signatures, Background radiation, Reflected sky radiation
514
514
May 23, 2011
05/11
by
Gupta, Sandee
texts
eye 514
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Robust stability conditions obtained through generalization of the notion of energy dissipation in physical systems are discussed in this report. Linear time-invariant (LTI) systems which dissipate energy corresponding to quadratic power functions are characterized in the time-domain and the frequency-domain, in terms of linear matrix inequalities (LMls) and algebraic Riccati equations (ARE's). A novel characterization of strictly dissipative LTI systems is introduced in this report. Sufficient...
Topics: COSMIC RAYS, BACKGROUND RADIATION, ANISOTROPY, COSMIC DUST, FREQUENCIES, MICROWAVES, MULTIPOLES,...
1,311
1.3K
May 23, 2011
05/11
by
Purba, Josua Bisuk Mubyarto; Horan, Sheli
texts
eye 1,311
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This research investigates the effect of pulse shaping QPSK on bandwidth efficiency over a non-linear channel. This investigation will include software simulations and the hardware implementation. Three kinds of filters: the 5th order Butterworth filter, the 3rd order Bessel filter and the Square Root Raised Cosine filter with a roll off factor (alpha) of 0.25,0.5 and 1, have been investigated as pulse shaping filters. Two different high power amplifiers, one a Traveling Wave Tube Amplifier...
Topics: COSMOLOGY, MICROWAVES, ANISOTROPY, BACKGROUND RADIATION, RADIOMETERS, SKY SURVEYS (ASTRONOMY),...
553
553
May 31, 2011
05/11
by
Matloff, G. L.; Vulpetti, G.; Bangs, C.; Haggerty, R
texts
eye 553
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Between February and September 2001, a number of aspects of the solar-sail-launched Interstellar probe (ISP), which is under consideration by NASA for launch in the 2010-2015 timeframe, were researched. The effort was conducted in New York City (NYC) February-May, at Marshall Space Flight Center (MSFC) May-July (when the PI served as a NASA Summer 2001 Faculty Fellow), and in NYC August-September. In addition to the people listed on the title sheet, many people in NYC and at MSFC participated...
Topics: ALGORITHMS, CORRELATION, ASTROPHYSICS, SKY SURVEYS (ASTRONOMY), STATISTICS, COSMOLOGY, COSMIC...
235
235
Jun 12, 2011
06/11
by
Buck, Gregory M.; Pulsonetti, Maria V.; Weilmuenster, K. Jame
texts
eye 235
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comment 0
Discrepancies between experiment and computation for shuttle leeside flow separation, which came to light in the Columbia accident investigation, are resolved. Tests were run in the Langley Research Center 20-Inch Hypersonic CF4 Tunnel with a baseline orbiter model and two extended trailing edge models. The extended trailing edges altered the wing leeside separation lines, moving the lines toward the fuselage, proving that wing trailing edge modeling does affect the orbiter leeside flow....
Topics: YBCO SUPERCONDUCTORS, RADIATION EFFECTS, BACKGROUND RADIATION, SCINTILLATION COUNTERS,...
214
214
Jun 27, 2010
06/10
by
Liperovskiy, V. A
texts
eye 214
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comment 0
Plasma turbulence in circumterrestrial space due to geomagnetic field related to dynamics of magnetosphere and electroconductivity
Topics: BACKGROUND RADIATION, EARTH ATMOSPHERE, ERROR ANALYSIS, GALAXIES, ASTRONOMICAL MODELS,...
335
335
Jun 1, 2011
06/11
by
Tannehill, J. C
texts
eye 335
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comment 0
This report consists of two published papers, 'Computation of Magnetohydrodynamic Flows Using an Iterative PNS Algorithm' and 'Numerical Simulation of Turbulent MHD Flows Using an Iterative PNS Algorithm'.
Topics: MICROWAVE ANISOTROPY PROBE, BACKGROUND RADIATION, ENERGY DISSIPATION, MAXIMUM ENTROPY METHOD,...
The powerpoint presentation details the key factors that lead to the design for the Cosmic Background Explorer's (COBE) spacecraft and instrument thermal design.
Topics: NASA Technical Reports Server (NTRS), COSMIC BACKGROUND EXPLORER SATELLITE, BACKGROUND RADIATION,...
185
185
May 23, 2011
05/11
by
Bambah, Bindu A
texts
eye 185
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Using the 'quantum optical approach' we propose a model of multiplicity distributions in high energy collisions based on squeezed coherent states. We show that the k-mode squeezed coherent state is the most general one in describing hadronic multiplicity distributions in particle collision processes, describing not only p(bar-p) collisions but e()e(-), vp and diffractive collisions as well. The reason for this phenomenological fit has been gained by working out a microscopic theory in which the...
Topics: MICROWAVES, GALACTIC CLUSTERS, BACKGROUND RADIATION, GALACTIC RADIATION, COSMIC BACKGROUND EXPLORER...
311
311
May 29, 2011
05/11
by
Garrison, James L.; Ruffini, Giulio; Rius, Antonio; Cardellach, Estelle; Masters, Dallas; Armathys, Michael; Zavorotny, Valer
texts
eye 311
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An experiment to collect bistatically scattered GPS signals from a balloon at 37 km altitude has been conducted. This experiment represented the highest altitude to date that such signals were successfully recorded. The flight took place in August 1999 over the Mediterranean sea, between a launch in Sicily and recovery near Nerpio, a town in the Sierra de Segura, Albacete province of Huelva, Spain. Results from this experiment are presented, showing the waveform shape as compared to theoretical...
Topics: BACKGROUND RADIATION, GALACTIC HALOS, INTERSTELLAR MATTER, SHADOWS, INFRARED ASTRONOMY SATELLITE,...
385
385
Jun 19, 2010
06/10
by
NON
texts
eye 385
favorite 0
comment 0
Incident and reflected ultraviolet and infrared electromagnetic background at Saturn complex and in area of hydrogen flame
Topics: BACKGROUND RADIATION, SATURN LAUNCH VEHICLES, ULTRAVIOLET RADIATION, ULTRAVIOLET SPECTRA,...
201
201
May 31, 2011
05/11
by
Hamaker, Joseph W
texts
eye 201
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Current space project cost models attempt to predict space flight project cost via regression equations, which relate the cost of projects to technical performance metrics (e.g. weight, thrust, power, pointing accuracy, etc.). This paper examines the introduction of engineering management parameters to the set of explanatory variables. A number of specific engineering management variables are considered and exploratory regression analysis is performed to determine if there is statistical...
Topics: BACKGROUND RADIATION, X RAYS, SKY SURVEYS (ASTRONOMY), AUTOCORRELATION, POINT SOURCES, INFRARED...
Table 1 in our paper had erroneous numbers for the coefficients fitting the parametric form for the optical depth of the universe to gamma-rays; tau. The correct values for these parameters as described in the original text are given in the table for various redshifts for the baseline model (upper row) and fast evolution (lower row) for each individual redshift.
Topics: NASA Technical Reports Server (NTRS), PHOTON DENSITY, FAR INFRARED RADIATION, OPTICAL THICKNESS,...
As part of its effort to update topics dealt with in the 1986 decadal physics survey, the Board on Physics and Astronomy of the National Research Council (NRC) formed a Panel on Cosmology. The Panel produced this report, intended to be accessible to science policymakers and nonscientists. The chapters include an overview ('What Is Cosmology?'), a discussion of cosmic microwave background radiation, the large-scale structure of the universe, the distant universe, and physics of the early...
Topics: NASA Technical Reports Server (NTRS), BACKGROUND RADIATION, COSMOLOGY, GALACTIC RADIATION,...
89
89
Oct 5, 2010
10/10
by
Rowan-Robinson, Michael
texts
eye 89
favorite 2
comment 0
Includes bibliographical references (p. 209-214) and index
Topics: Infrared Astronomical Satellite, Cosmic ripples, Cosmology, Cosmic background radiation,...
Data collected from a magnetometer onboard ATS-1 indicate that at least three types of oscillations occur: oscillations with the magnetic component (1) prependicular to the background field, (2) parallel to the background field, and (3) in the meridional plane. Two modes of polarization were found to exist, parallel and perpendicular modes.
Topics: NASA Technical Reports Server (NTRS), ATS 1, MAGNETOHYDRODYNAMIC WAVES, POLARIZATION (WAVES),...
465
465
May 23, 2011
05/11
by
Moulot, Jacques; Faur, Mircea; Faur, Maria; Goradia, Chandra; Goradia, Manju; Bailey, Sheil
texts
eye 465
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It is well known that the behavior of III-V compound based solar cells is largely controlled by their surface, since the majority of light generated carriers (63% for GaAs and 79% for InP) are created within 0.2 micron of the illuminated surface of the cell. Consequently, the always observed high surface recombination velocity (SRV) on these cells is a serious limiting factor for their high efficiency performance, especially for those with the p-n junction made by either thermal diffusion or...
Topics: IMAGING SPECTROMETERS, BACKGROUND RADIATION, THERMAL RADIATION, ASTRONOMICAL SPECTROSCOPY, INDIUM...
A brief historical introduction to the development of observational astronomy and cosmology will be presented. The close relationship between the properties of light, symmetry, and our understanding the contents of our universe will be explored.
Topics: NASA Technical Reports Server (NTRS), COSMIC MICROWAVE BACKGROUND RADIATION, COSMOLOGY, SYMMETRY,...
Measurements of the linear polarization of the cosmic microwave background provide a direct window into the physics of inflation. The experimental challenges are daunting: not only is the predicted signal faint compared to the photon noise limit, but it is hidden behind competing foregrounds from both local and cosmic sources. I will discuss the experimental response to these challenges and the prospects for eventual detection and characterization of the inflationary signal.
Topics: NASA Technical Reports Server (NTRS), COSMIC MICROWAVE BACKGROUND RADIATION, LINEAR POLARIZATION,...
242
242
Jun 11, 2011
06/11
by
Yang, S. C.; Cai, Ming; Kalnay, E.; Rienecker, M.; Yuan, G.; Toth, ZA
texts
eye 242
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The breeding method has been implemented in the NASA Seasonal-to-Interannual Prediction Project (NSIPP) Coupled General Circulation Model (CGCM) with the goal of improving operational seasonal to interannual climate predictions through ensemble forecasting and data assimilation. The coupled instability as cap'tured by the breeding method is the first attempt to isolate the evolving ENSO instability and its corresponding global atmospheric response in a fully coupled ocean-atmosphere GCM. Our...
Topics: GALACTIC RADIATION, ALGORITHMS, MICROWAVE RADIOMETERS, ULTRAHIGH FREQUENCIES, CELESTIAL BODIES,...
An anisotropic feature of the diffuse hard X-ray background that tracks the concentration of interstellar hydrogen in the plane of the galaxy is reported. This feature supports a model of galactic X-ray emission by subrelativistic cosmic rays via a bremsstrahlung process. The measurement was carried out on August 9, 1971, using two multianode multilayer gas proportional counters onboard Aerobee 170 flight 13.08. A schematic diagram of the detectors is shown. This type of construction and the...
Topics: NASA Technical Reports Server (NTRS), ANISOTROPY, X RAYS, BACKGROUND RADIATION, COSMIC RAYS,...
A hybrid coded imaging and detection system developed at the U.S. Naval Research Laboratory (NRL) was used for active interrogation measurements with pulsed bremsstrahlung at the Hermes-III facility at Sandia National Laboratories, Albuquerque. This work follows previous experiments performed in 2011 [1] and explores different targets and system conditions to the previous work. The techniques used and challenges encountered during this work are described.
Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC, *FISSIONABLE MATERIALS, *INTERROGATION, BACKGROUND...
392
392
May 31, 2011
05/11
by
Schattenburg, Mark L
texts
eye 392
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During the period of this Cooperative Agreement, MIT (Massachusetts Institute of Technology) developed advanced methods for applying silicon microstructures for the precision assembly of foil x-ray optics in support of the Constellation-X Spectroscopy X-ray Telescope (SXT) development effort at Goddard Space Flight Center (GSFC). MIT developed improved methods for fabricating and characterizing the precision silicon micro-combs. MIT also developed and characterized assembly tools and several...
Topics: ACTIVE GALACTIC NUCLEI, X RAY SOURCES, SPECTRUM ANALYSIS, X RAY SPECTRA, LUMINOSITY, ROSAT MISSION,...
During this current reporting period, the project has focused on completing Phase 1 of the field monitoring work and documenting research results. Highlights of these efforts include presentations of papers at the annual joint meeting of the American Physical Society/American Association of Physics Teachers, April 18-22, 1994, in Crystal City, Virginia, and at the International Space, Time, and Gravitation Conference and Etoiles de L'Ecole Polytechnique Symposium, May 23-28, 1994, in St....
Topics: NASA Technical Reports Server (NTRS), BACKGROUND RADIATION, EARTH IONOSPHERE, EXTREMELY LOW...
This granted funded ASCA studies of the most X-ray luminous clusters of galaxies in the Extended Medium Sensitivity Survey. These studies leveraged further observations with Chandra and sparked a new collaboration between the PI and John Carlstrom's Sunyaev-Zel'dovich team. The major scientific results due largely or in part from these observations: the first z=0.5-0.8 cluster temperature function, constraints on cluster evolution which showed definitively that the density of the universe...
Topics: NASA Technical Reports Server (NTRS), GALACTIC CLUSTERS, X RAY SOURCES, BACKGROUND RADIATION,...
Cosmic infrared background (CIB) contains information about galaxy luminosities over the entire history of the Universe and can be a powerful diagnostic of the early populations otherwise inaccessible to telescopic studies. Its measurements are very difficult because of the strong IR foregrounds from the Solar system and the Galaxy. Nevertheless, substantial recent progress in measuring the CIB and its structure has been made. The measurements now allow to set significant constraints on early...
Topics: NASA Technical Reports Server (NTRS), BACKGROUND RADIATION, INFRARED RADIATION, SOLAR SYSTEM,...
531
531
Jun 3, 2011
06/11
by
Radil, Kevin; Zeszotek, Michell
texts
eye 531
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A series of tests was performed to determine the internal temperature profile in a compliant bump-type foil journal air bearing operating at room temperature under various speeds and load conditions. The temperature profile was collected by instrumenting a foil bearing with nine, type K thermocouples arranged in the center and along the bearing s edges in order to measure local temperatures and estimate thermal gradients in the axial and circumferential directions. To facilitate the measurement...
Topics: CALIBRATING, AIRBORNE SURVEILLANCE RADAR, BACKGROUND RADIATION, DEPOLARIZATION, ICE CLOUDS, OPTICAL...
Measurements of the cosmic microwave background (CMB) offer a means to explore the universe at a very early epoch. Specifically, if the universe went through a brief period of exponential expansion called inflation as current data suggest, gravitational waves from this period would polarize the CMB in a specific pattern. At GSFC, we are currently working towards two experiments that work in concert to measure this polarization pattern in search of evidence for inflation. The Cosmology Large...
Topics: NASA Technical Reports Server (NTRS), COSMOLOGY, COSMIC MICROWAVE BACKGROUND RADIATION,...
A: The cosmic microwave background (CMB) radiation fills the universe and travels in all directions. As we see it from here in satellite maps, it is about equally bright in all directions, and thats one of the main reasons we know its cosmic.
Topics: NASA Technical Reports Server (NTRS), COSMIC MICROWAVE BACKGROUND RADIATION, MICROWAVES, UNIVERSE,...
222
222
Jun 3, 2011
06/11
by
Merri, Mario; Shames, Peter, et al; Schmidt, Michael; Ercolani, Alessandro; Dankiewicz, Ivan; Cooper, Sam; Thompson, Roger; Symonds, Martin; Oyake, Amalaye; Vaughs, Ashton
texts
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This CCSDS paper presents a reference architecture and service framework for spacecraft monitoring and control. It has been prepared by the Spacecraft Monitoring and Control working group of the CCSDS Mission Operations and Information Management Systems (MOIMS) area. In this context, Spacecraft Monitoring and Control (SM&C) refers to end-to-end services between on- board or remote applications and ground-based functions responsible for mission operations. The scope of SM&C includes: 1)...
Topics: DIFFUSION, ASTRONOMICAL MODELS, COSMIC RAYS, DIFFUSE RADIATION, GAMMA RAYS, X RAYS, POPULATIONS,...
424
424
Jul 25, 2010
07/10
by
ROZOVSKIY, G. I.; MISYAVICHIOS, A. K
texts
eye 424
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POTENTIALS OF BARIUM AND SODIUM CUPRATE COATINGS, OBTAINED BY AN ELECTROCHEMICAL METHOD ON PLATINUM, AND IN ISOLATED CASES, ON COPPER, WERE MEASURED. IT WAS SHOWN THAT THE STATIONARY POTENTIALS WERE IN THE CASE OF BOTH CUPRATES. IN 17-0.1 N NA0H SOLUTIONS, THE FOLLOWING DEPENDENCIES WERE ESTABLISHED: AT 5 C, E = 0.77 TO 0.52 LGAOH-, AT 25 C E = 0.74 TO 0.060 LGAOH-. IN 10 TO THE -1 TO 10 TO THE -3 N NA0H SOLUTIONS, THE SLOPE SLOPE COEFFICIENT FOR A LINEAR DEPENDENCE OF THE POTENTIAL ON PH IS...
Topics: AEROSPACE ENVIRONMENTS, MOLECULAR COLLISIONS, ELECTROMAGNETIC RADIATION, IMAGING SPECTROMETERS,...
A brief description of the background suppression scheme is described, and results obtained using the defocussing technique are presented. It has been demonstrated that a background suppression ratio of two orders of magnitudes can be obtained.
Topics: DTIC Archive, Shepherd,O, VISIDYNE INC BURLINGTON MASS, *OPTICAL FILTERS, *INTERFEROMETERS, OPTICAL...
John Mather answers questions for an interview for the Bentham Science Newsletter. He covers topics ranging from his childhood, his professional career and his thoughts on research, technology and today's scientists and engineers.
Topics: NASA Technical Reports Server (NTRS), COSMIC BACKGROUND EXPLORER SATELLITE, COSMIC MICROWAVE...
