... During the analysis of the surveys carried out on RATAN-600, it was found that almost one fifth of the detected sources shows significant radio flux variations. ... We used the data from "Cold" radio surveys carried out with RATAN-600 in 1980-1994 to search for radio sources with significant flux variability. ... On possibility of detection of variable sources using the data of Cold surveys carried out on RATAN-600. ... Detection of Variable Sources Using the Data of "Cold" Surveys. ...

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• Detection of polarized radiation sources with unusual spectral characteristics
• Study of radio spectra and variability of GPS sources
• Galaxy sector, archive 2012

... Articles | ... Forums . ... 230 deg . 49 deg . ... 130 deg . ... More Info . ... 210 deg . ... 168 deg . ... 249 deg . ... 195 deg . ... 271 deg . ... 110 deg . ... 338 deg . ... July 15 . 247 deg . ... 224 deg . ... 340 deg . ... July Phoenicids (PHE) . ... August 10 . 341 deg . ... 339 deg . ... 307 deg . ... 334 deg . ... 335 deg . ... 286 deg . ... 327 deg . ... 262 deg . ... 102 deg . ... 153 deg . ... 117 deg . ... December 2 . ... 123 deg . ... 100 deg . ... www.astronomy.net . ...

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... The stars examined here were primarily culled from two lists of X--ray sources in Orion. ... The second region is two degrees in extent east--west and ten degrees north--south with Orionis being near the northern edge. ... In the end, two main regions were chosen for monitoring: stars near Orionis and stars northwest of the belt of Orion. ... The PSPC identified 22 sources within 15 of Orionis in addition to the sources listed in Table 1 , giving a total of 85 X--ray sources in the Orionis region. ...

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• Chandra Images for G348.5+00.1
• Chandra Images for G260.3-03.4
• Chandra Images for G348.7+00.3

Observing Strategies at cm wavelengths Making good decisions Jessica Chapman Synthesis Workshop May 2003 Radio Continuum Observations · Frequencies · Angular resolution (/B) · Array configurations · Calibration strategies · Integration times · Interference and confusion ATCA - cm continuum observations 3 6 (cm): (GHz): 8.0 4 9.2 4.4 46.7 Prim.beam (arcmin): 5 Synth. ... For complex sources ­ it is often advisable to use 2 or more configurations. ...

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• Source size measurement from observed quasar microlensing
• ATCA_mm_science
• VSOP Observing Schedule

spaceweb@oulu.fi - last update: 5 January 1999, 1500 UT (RR) . Geomagnetic pulsations, i.e., ultra-low-frequency (ULF) waves cover roughly the frequency range from 1 mHz to 1 Hz , i.e., from the lowest the magnetospheric cavity can support up to the various ion gyrofrequencies . ... Pulsation classes . ... Pulsations are studied with in situ observations in space of both magnetic and electric fields, and with ground-based magnetometers . ... correlation with IMF/solar wind parameters . ...

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• TCV [Oulu]
• Plasma source [Oulu]
• Solar Energetic Particles

Lectures . ... Home Lectures Lecture Series 2010-2011 Lecture Series 2010-2011 ? Greening the Earth Using Space Resources? by Greg Matloff . ... Lecture Series 2010-2011 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

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• Lecture Series 2015-2016 ? Amateur Astronomers Association of New York
• AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 ? Amateur
• Observing Resources for Amateur Astronomers ? Part 3: Advanced Observers ?

... Galaxies 99 Cosmic background with model of cloudy interstellar medium Yu. ... Figure 1: Averaged spectrum of the cosmic background I f in frequency range 0.25 200 MHz for the Galactic poles. ... First interpretation of the cosmic noise background spectrum at broad band frequency range 0.25 200 MHz with a model of the cloudy interstellar medium ISM is presented here. ... Synthesized background spectra I f for regions of the Galactic poles at the frequency range 0.25 200 MHz is presented in Fig. ...

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• http://www.gao.spb.ru/english/personal/malkin/publ/zm10c.pdf
• http://www.gao.spb.ru/english/as/j2014/presentations/raposo-pulido.pdf
• http://www.gao.spb.ru/english/publ-s/viii-rfs/p011.pdf

... The J, H and K bands are characterized by a bright background, such a background is mainly due to the emission of atmospheric lines and of thermal radiation. ... If the source cover a large fraction of the slit, spectra off-source must be observed to adequately sample the sky background. ... The on chip integration time (time spent in each position of the slit) must not exceed 40 seconds in J and H bands and 60 seconds in K band. ... We suggest a sequence of 10 for each elementary integration time. ...

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• Algorithm
• Arcetri H2O Maser catalog
• Radioastronomy reduction procedures

... This flare was observed simultaneously in H alpha, ratio (at microwave and millime­ ter wavelenghts), and soft and hard X­rays (by the Yohkoh spacecraft) with high spatial and moderate spectral resolution. ... Analysis of the microwave/hard X­ray/soft X­ray emission from individual sources provides information on the radio emission mechanisms, the energetic electron population, the magnetic field strenght, and plasma den­ sity. ...

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• General Resources
• Observations with the Faulkes Telescopes
• Terry Mosely's Bulletins

Statistics of sunspot activity . The sunspot indices . ... NGDC's observations . The solar regions . ... Average annual indices . ... November . ... November, 2013 . Visual indices of solar activity by National Geophysical Data Center . ... Average . ...

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Next: Comments on Individual Sources Up: Sample Identification Previous: Sample Identification . In Figure 2, we show the spectra of the optical counterparts to 85 of 97 observed X-ray/radio sources. ... Positional information for all 85 sources for which we announce identifications herein are given in Table 3, including information from WGACAT, the PMN and Green Bank surveys, the NVSS and our ATCA survey. ... Of the 85 newly identified sources, 59 are FSRQs, and 22 are BL Lacs. ...

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• Rivi: Links and online resources
• ESO - New Release of Images and Source lists for VPHAS+
• ESO - Librarians' Professional Resources

... LABORATORY OF RADIO ASTRONOMICAL OBSERVATIONS . Radio sources identification is one of the most important tasks of the current radio astrophysics. ... Optical idetification. ... Optical identifications of subsample of steep spectra radio sources from RC catalog using 6m SAO telescope of SAO RAS: optical observations. ... Astronomy Reports. ... Identification of radio sources with data of various radio catalogs allows one to construct continual spectrum of the object and its radio structure. ...

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• di_eks
• Observational data
• V.Shergin's Home Page

... Tonight's Sky . ... The Magazine . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... January 2006 resources . FROM THE January 2006 ISSUE . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

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• Resources for red-star fans | Astronomy.com
• December 2005 resources | Astronomy.com
• February 2006 resources | Astronomy.com

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . Research results on fast active processes General information Main characteristics of the Radio telescope Observing programs General view of the antenna array Main research areas Principle of generation of radio images Radio telescope's beam Receiving systems Main characteristics of the base receiving-recording complex Calibrations Data archive and databases ... Distribution of the recorded spikes in duration . ...

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... Magnetic Storms . ... Cosmic Rays . ... Energetic Particles . ... Solar fast Particles . We cannot observe the way the distant universe accelerates cosmic rays or produces energetic photons, but acceleration processes also occur on our Sun , though on a much more moderate scale. ... That is why such events are often missed by cosmic ray detectors near the equator, where the lowest energies are excluded by the Earth's magnetic field. ... Should we be concerned about solar energetic radiation? ...

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• "Exploration" as a Classroom Resource
• The Sun
• Substorm Event On November 24, 1996

... They are concerned with Attitude Control System of the spacecraft, satellite visibility from tracking stations, limits on the satellite autonomous operations during the orbit, and needs for auxiliary operations with the spacecraft. ... Among the operational constraints the most important one is the number of programmed slews per orbit, which determines the maximum number of radio sources to be observed during one orbit. ... System temperature (K) . ... Progress of the RadioAstron Project in Pictures...

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• Texas Survey of radio sources at 365MHz
• ОТЧЕТ
• Project SUBMILLIMETRON

lsst.tcc љ 1.2.2-3-g89ecb63 . ... Files . ... python . ... axis . coordConvWithFP.py . ... 22 љ def coordConvWithFP (fromCoordSys, fromPVTPair, fromPxPMRadVel, fromDir, toCoordSys, obj, inst, zeroPM, useGSWavelen): . 23 љ """!Convert a coord from one coordinate system to another . ... 35 љ @param[in] obj object block computed at desired desired TAI date of conversion . ... 50 љ obj = tcc.base.Obj(obj) # make a copy so I can change obj.site if useGSWavelen . ... tcc.axis.rotFromObs.rotFromObs . ...

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• lsst.tcc: python/tcc/axis/obsFromRot.py Source File
• lsst.tcc: python/tcc/axis/obsFromGProbe.py Source File
• lsst.tcc: python/tcc/axis/rotFromObs.py Source File

M. ( / DIAS, Ireland), A. (ISDC, Switzerland) 1 - Key Question Only 3 binary systems regularly observed in TeV: PSR B1259-63 (young pulsar +Be star, P=3.4 y) LSI +61 303 (comp. source + Be star, P=26.42 d) LS 5039 (comp. source + O star, P=3.9 d) Origin of the high-energy emission? ... 2006; Neronov &Chernyakova 2007 4 3.4 years orbital period. e~0.87 Correlated variability with a sharp rise ( "two bumps structure" ) is seen in radio, X-ray (and TeV?) bands. ...

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• Fast search through RTT150 data archive

home education > family astro . SEARCH ASP SITE: Match ALL words Match ANY word . ... Family ASTRO Resource Guides . ... The Moon . ... This guide -- for educators, amateur astronomers, and everyone who would like to know more about the Earth's only natural satellite -- covers our scientific understanding of the Moon as a world, the appearance of the Moon in our skies, and tips for observing the Moon through binoculars or small telescopes. ... http://www.nasa.gov/worldbook/moon_worldbook.html . ...

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• ASP: Observing
• ASP: The Astronomy of Many Cultures: A Resource Guide
• ASP: Black Holes: An Introductory Resource List

... Up: Science Data Pipelines . ... We designed and developed a package which simulates extragalactic point source data within a given field of view and SIRTF band. ... The simulator is modular and extensible to enable multi-wavelength simulations, has been optimized by utilizing parallel processing capabilities, and will be used to test pipeline software. ... The extragalactic simulator is capable of generating large numbers of galaxies within a given patch of sky for SIRTF pipeline testing. ...

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• A New PROS Task for Calculating HRI Source Intensities or Upper Limits
• ADASS 2003 Conference Proceedings
• How to Piece Together Diffracted Grating Arms for AXAF Flight Data