Astrophysical Space Mission Astron-2 for an All-Sky Survey in the Ultraviolet Spectral Domain

2019 ◽  
Vol 53 (7) ◽  
pp. 560-566
Author(s):  
M. E. Sachkov ◽  
I. S. Savanov ◽  
B. M. Shustov ◽  
A. S. Shugarov ◽  
S. G. Sichevskij
Keyword(s):  
Space Mission ◽  
Spectral Domain ◽  
Sky Survey

scholarly journals A Galactic Population Census in Support of Astrometric Measurements

1995 ◽  
Vol 166 ◽  
pp. 211-215 ◽  
Author(s):  
M.A.C. Perryman
Keyword(s):  
Space Mission ◽  
Radial Velocities ◽  
Sloan Digital Sky Survey ◽  
Population Census ◽  
Sky Survey ◽  
Galactic Population ◽  
Recent Developments ◽  
Analysis System

A galactic counterpart of the Sloan Digital Sky Survey, consisting of two dedicated 2–3-m class telescopes (one in each hemisphere), could provide precisely those stellar data necessary to complement the information furnished by a future astrometric space mission: in particular, an automated acquisition and analysis system could provide spectral types, metallicities, and radial velocities of several tens of millions of stars down to about 15–16 mag. Such a dedicated spectroscopic stellar survey would provide considerably more information about the details of the stellar distribution within our Galaxy than is known at present. It is suggested that a galactic version of the Sloan Digital Sky Survey, utilising the GSC-II as an observing list, and capitalising on recent developments in multi-fibre spectroscopic survey capabilities, would be a timely initiative.

scholarly journals Euclid Space Mission: building the sky survey

2014 ◽  
Vol 10 (S306) ◽  
pp. 379-381 ◽  
Author(s):  
I. Tereno ◽  
C.S. Carvalho ◽  
J. Dinis ◽  
R. Scaramella ◽  
J. Amiaux ◽  
...  
Keyword(s):  
Physical Properties ◽  
Space Mission ◽  
Current Reference ◽  
Sky Survey ◽  
Reference Implementation

AbstractThe Euclid space mission proposes to survey 15000 square degrees of the extragalactic sky during 6 years, with a step-and-stare technique. The scheduling of observation sequences is driven by the primary scientific objectives, spacecraft constraints, calibration requirements and physical properties of the sky. We present the current reference implementation of the Euclid survey and on-going work on survey optimization.

scholarly journals TRIENNIAL REPORT

2015 ◽  
Vol 11 (T29A) ◽  
pp. 340-364
Author(s):  
Steve Chesley ◽  
Daniela Lazzaro ◽  
Andrea Milani ◽  
Yoshikawa Makoto ◽  
Shinsuke Abe ◽  
...  
Keyword(s):  
Solar System ◽  
Size Distribution ◽  
Space Mission ◽  
Minor Planet ◽  
Sky Survey ◽  
Solar System Bodies ◽  
Band Survey

This triennium has seen progress in a number of directions related to Commission 20 objectives. Foremost, the growth in the number of astrometric observations of small solar system bodies continues to accelerate and the total number of measurements recorded by the Minor Planet Center now exceeds 135 million. Currently the Pan-STARRS project and the Catalina Sky Survey (CSS) dominate detection and discovery efforts, while the NEO-WISE space mission contributes infrared detections valuable for understanding the size distribution of populations. Looking forward, the Large Synoptic Survey Telescope (LSST) is now funded and in construction on Cerro Pachon in Chile. LSST has the potential to revolutionize the field by conducting a multi-color, ten-year, all-sky survey with a limiting magnitude ~24.5 in the r-band. Survey operations are set to begin in 2022.

Southern Hemisphere Seti Survey: Five Years of Project Meta II

1997 ◽  
Vol 161 ◽  
pp. 611-621
Author(s):  
Guillermo A. Lemarchand ◽  
Fernando R. Colomb ◽  
E. Eduardo Hurrell ◽  
Juan Carlos Olalde
Keyword(s):  
Southern Hemisphere ◽  
Scattering Theory ◽  
Galactic Plane ◽  
Narrow Band ◽  
Neutral Hydrogen ◽  
Sky Survey ◽  
Inertial Frames ◽  
Interstellar Scattering ◽  
Extraterrestrial Origin ◽  
Spectral Channels

AbstractProject META II, a full sky survey for artificial narrow-band signals, has been conducted from one of the two 30-m radiotelescopes of the Instituto Argentino de Radioastronomía (IAR). The search was performed near the 1420 Mhz line of neutral hydrogen, using a 8.4 million channels Fourier spectrometer of 0.05 Hz resolution and 400 kHz instantaneous bandwidth. The observing frequency was corrected both for motions with respect to three astronomical inertial frames, and for the effect of Earths rotation, which provides a characteristic changing signature for narrow-band signals of extraterrestrial origin. Among the 2 × 1013spectral channels analyzed, 29 extra-statistical narrow-band events were found, exceeding the average threshold of 1.7 × 10−23Wm−2. The strongest signals that survive culling for terrestrial interference lie in or near the galactic plane. A description of the project META II observing scheme and results is made as well as the possible interpretation of the results using the Cordes-Lazio-Sagan model based in interstellar scattering theory.

Background particle detector for the solar x-ray photometer ChemiX of space mission “Interhelioprobe”: an adjustment of breadboard model modules

2015 ◽  
Vol 21 (2(93)) ◽  
pp. 3-14 ◽  
Author(s):  
O.V. Dudnik ◽  
◽  
E.V. Kurbatov ◽  
V.O. Tarasov ◽  
L.A. Andryushenko ◽  
...  
Keyword(s):  
Space Mission ◽  
Particle Detector ◽  
X Ray ◽  
Background Particle

AUTOMATIC ESTIMATION OF SPATIALLY CORRELATED NOISE VARIANCE IN SPECTRAL DOMAIN FOR IMAGES

2014 ◽  
Vol 73 (6) ◽  
pp. 511-527 ◽  
Author(s):  
V.V. Abramova ◽  
S. K. Abramov ◽  
V. V. Lukin ◽  
A. A. Roenko ◽  
Benoit Vozel
Keyword(s):  
Spectral Domain ◽  
Correlated Noise ◽  
Noise Variance ◽  
Spatially Correlated ◽  
Automatic Estimation ◽  
Spatially Correlated Noise

Intrinsic Characteristics of Quasars Redshifts

2014 ◽  
Vol 4 (3) ◽  
pp. 655-661
Author(s):  
Waleed Elsanhoury
Keyword(s):  
Absolute Magnitude ◽  
Sloan Digital Sky Survey ◽  
Strong Correlations ◽  
Sky Survey

Using Sloan Digital Sky Survey SDSS catalog, some intrinsic characteristics of Quasars (10,000 points) are developed of these are the strong correlations between redshifts and other parameters, e.g. combined magnitude, luminosity, and absolute magnitude .Moreover ,the Karlsson peak of our sample is also computed.

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