... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

... RATAN-600 data for the BL Lacertae objects (multi-frequency catalogue, Version 1.0) . GPS radio sources . ... BL Lacertae objects . ... The difference between these objects is the peak frequency of the synchrotron component of their spectral energy distribution (HBLs: high-energy peak, LBLs: low-energy peak, IBLs: intermediate). ... The observations were carried out with the RATAN-600 radio telescope during 2006-2011 at six frequencies: 1.1, 2.3, 4.8, 7.7, 11.2 and 21.7 GHz. ...

Next: Structure of the Galaxy Up: Model of the Galaxy Previous: Model of the Galaxy . As discussed above (Section  6 ), galactic binary systems are assumed to be distributed logarithmically along their semi-major axis A (Abt and Levy, 1976[ 2 ]), . ... Figure 40: Number of binary stars per frequency decade. ... As the observed distribution of binary periods is flat (equation ( 15.3.1 )), the normalization constant is the total number of galactic binaries per frequency decade: . ...

The H 2 O Southern Galactic Plane Survey (HOPS) has mapped a 100 degree strip of the Galactic plane (-70 > l > 30 , |b| < 0.5 ) using the 22-m Mopra antenna at 12-mm wavelengths. ... We have developed an automatic emission finding procedure based on the ATNF DUCHAMP software and have used it to create a new catalogue of 669 dense molecular clouds. ... Combined with other Galactic plane surveys this new molecular-line dataset constitutes a key tool for examining Galactic structure and evolution. ...

We present Spitzer 3.6-160 О?m images, Spitzer mid-infrared spectra, and JCMT SCUBA 850 О?m images of the Sombrero Galaxy (NGC 4594), an Sa galaxy with a 109 Msolar low-luminosity active galactic nucleus (AGN). The brightest infrared sources in the galaxy are the nucleus and the dust ring. ...

. The frequency of the spectral maximum f m of the gyrosynchrotron emission vs. the power-law index of the electron spectrum calculated according to Dulk & Marsh (1982). Curves are shown for various column densities LNe of accelerated electrons and magnetic field strengths B . The angle between the line of sight and the magnetic field is 45 degree.

... Program of the Course of Radio Astronomy . Moscow State University , Physics Department , Astronomy Division , 4 th year, 60 hours in total) . ... Molecular maser emission. ... The emission of the interstellar neutral hydrogen. ... Pacholczyk, A. G. Radio Astrophysics, W. H. Freeman & Co., ... Frontiers of Astrophysics, Avrett, E. H., ed., Harvard University Press, Cambridge, Mass., ... Kaplan, S. A., Pikelner, S. B. The Interstellar Medium, Harvard University Press, Cambridge, Mass., ...

... 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. ...

... 3 Test Pro cedure · We tested four components of the UPRM GPS Receiver, Fig. 1, GPS Receiver Unit (right), GPS Antenna (left), GPS Power Adapter (center); Fig. 2, GPS Battery Charger for Solar Panel (inside the case). ... 4 Figure 2: UPRM GPS Receiver Battery Charger Test Results · GPS Receiver Unit: receiver connected to GPS antenna and power adapter, separated around 1ft. ... GPS Battery Charger: receiver connected to GPS antenna, no power adapter, instead battery charger. ...

The neutral hydrogen structure at high galactic latitude . ... Angular structure of the interstellar HI emission at 21 cm was investigated on the declinations of +5 degree, +16 dg., +27.5 dg., +39 dg. and +50 dg. in the R.A. range of 10 h to 16 h (galactic latitudes from 45 dg to 90 dg) with the help of RATAN-600 radio telescope with mean angular resolution 2.0'x 20'. ... Angular power spectrum of interstellar HI emission was computed with standard FFT code and smoothed over 1 h along R.A. (figure 1). ...

Measurements of the Galactic foreground which a ects CMB measurements: the Galactic Spectral Index M. Zannoni, M. Gervasi, G. Boella, G. Sironi Physics Dept. ... We present new measurements of the spectral index of the galactic di use radia- tion between 0.6 and 2.5 GHz made by TRIS, a set of three ra- diometers we use to look for deviations from a Planck distribution in the spectrum of the CMB at frequencies close to 1 GHz. ...

... 4 A I. I NTRODUCTION AND BACKG ROUND A Superconducting Integrated Receiver (SIR) [1] comprises on one chip a low-noise SIS mixer with quasioptical antenna, an Flux-Flow Oscillator (FFO) acting as a Local Oscillator (LO) and a second SIS harmonic mixer (HM) for the FFO phase locking (see Fig. ... In the SIR the bandwidth is determined by the SIS mixer tuning structure and the matching circuitry between the SIS and the FFO. ...

... Posts tagged ?emission line? ... Why is it that detection of emission lines is more reliable than that of absorption lines? ... When you look at the iconic Figure 1 from Protassov et al (2002) , which shows how the null distribution of the Likelihood Ratio Test (LRT) and how it holds up for testing the existence of emission and absorption lines. ... Tags: absorption line , emission line , F-test , LRT , Protassov , question for statisticians . ... Comment . ... Entries RSS . Comments RSS . ...

... Астронет | ... Словарь | ... Термин "emission" . ... излучение . ... радио)излучение диска Галактики . ... общее (радио) излучение Солнца . ... emission of radio waves : . ... космический фон (радиоизлучения) . ... радио)излучение из области факельных полей (медленно меняющаяся составляющая радиоизлучения Солнца) . ... radio-wave emission : . ... радио) излучение от солнечных пятен (радиоизлучение Солнца, связанное с пятнами) . ... радио) излучение IV типа (спорадического радиоизлучения Солнца) . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Figure 1: Dynamic spectrum of Jovian radio emission recorded by Cassini on October 21, 2000 (courtesy of W.S. Kurth, Cassini RPWS Team, University of Iowa). ... We investigate the formation of zebra-like fine spectral structures (consisting of several parallel bands in the dynamic spectrum) in the Jovian broadband kilometric radiation; such radio bursts were observed by Cassini in 2000/2001. ...

... Searching for GOTOQS Proper ties of GOTOQs The future: utilizing MUSE in absorption line studies 2 Tuesday, June 9, 15 What are GOTOQs? ... Photometric and spectroscopic proper ties How are emission and absorption proper ties connected? How are low-z absorption systems related to higher-z absorption systems? ... Orientation and inclination angle Photometric and spectroscopic proper ties How are emission and absorption proper ties connected? ...

... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Foreground emission and Cosmic Microwave background intrinsic anisotropies . ... Since its discovery the Cosmic Microwave Radiation (CMB) has been one of the pillars of modern Cosmology. ... Further development of this work is the application of already tested algorithms to disentangle the foreground emission from the CMB maps and the determination of the CMB intrinsic emission. ... Return to list of thesis topics ...

An X-ray/radio sample of Active Galactic Nuclei Nuria Fonseca Bonilla Tutor: Stefano Bianchi Matteo Guainazzi An X-ray/radio sample of Active Galactic Nuclei Brief introduction Results Conclusions An X-ray/radio sample of Active Galactic Nuclei 1. ... Classification of AGN radio loud (powerful jets): e.g: radio galaxies, quasars, blazars... radio quiet radio quiet quasars (RQQs) Veron `06: MABS < -23 Seyfert Veron `06: MABS > -23 An X-ray/radio sample of Active Galactic Nuclei 3. ...

... An interactive IRAF task for the analysis of Extreme Ultraviolet Explorer ( EUVE ) emission line spectra is presented. The line flux in extracted spectra may be measured by multiple techniques, including fitting individual lines. ... To aid in identifying lines, the positions of known lines may be marked on the spectrum during the fitting process. Also, model EUVE spectra may be constructed and overlaid using plasma emissivities and source emission measures supplied by the user. ...

... 2006 February 13 . The N44 Emission Nebula . ... Located in our galactic neighbor the Large Magellanic Cloud , N44 houses numerous massive bright stars, lengthy lanes of dark dust , and vast clouds of hydrogen gas that glows red. The red color of the N44 emission nebula comes from pervasive hydrogen atoms re-acquiring electron s that were knocked away by energetic light from massive stars. ... N44, pictured above , spans about 1,000 light years and lies about 170,000 light years distant. ...