Results 191 to 200 of about 164,762 (248)

The multiwavelength behaviour of BL Lacertae explained by a wiggling filamentary jet

Raiteri C.
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Extreme energy in a relaxed galaxy group indicates the bursty nature of AGN feedback

Eckert D, Gastaldello F, Lovisari L, McGee S, Pasini T, Brienza M, Kolokythas K, O'Sullivan E, Simionescu A, Sun M, Bourne M, Chen Y, Cui W, Ettori S, Finoguenov A, Gozaliasl G, Kale R, Mernier F, Oppenheimer B, Schellenberger G, Seppi R, Tempel E.   +21 more
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40. Radio Astronomy (Radio Astronomie)

Transactions of the International Astronomical Union, 1988
The following commission members have contributed to this report:M Birkinshaw, R J Cohen, J J Condon, T J Cornwell, J R Dickel, P A Feldman, R Genzel, M Goss, V Kapahl, Gopal Krishna, M Kundu, A G Lyne, C R Masson, A C Readhead, W Reich, J M Riley, A J Turtle, J M van der Hulst, T L Wilson.
R. Strom, D Jauncey, E Seaquist, G. Setti, L Matveyenko, J E Baldwin, A Barrett, Kenneth I. Kellermann, R Booth, G Nicholson, P G Mezger, Thomas L. Wilson, S. Wang, V Kapahi, A Baudry   +14 more
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Radio Astronomy (Radio Astronomie)

1971
The President welcomed members of the Commission and the large gathering of non-members present. He recorded with deep regret the death in July 1968 of Professor S. E. Khaikin of Pulkovo Observatory.
S. F. Smerd, J. P. Wild
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Radio astronomy

Physics Today, 1950
Until recently astronomy was restricted to the visual band of the electromagnetic spectrum, and to wavelengths near to the visual band. Our immense store of astronomical knowledge has been obtained from observations made in a band of about four octaves of the spectrum, although measuring techniques are available for about forty octaves.
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Radio Astronomy (Radio Astronomie)

1991
Aperture Synthesis Telescopes — Commissioning tests and observations have been made using three antennas in the Australia Telescope (AT), spaced up to 2km apart, and the first image of a radio source observed at 6cm was produced in 1989. The IRAM millimeter array in France comprizing three 15-m antennas has been commissioned at 3mm. A fourth antenna is
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Radio astronomy receivers

IEEE Transactions on Antennas and Propagation, 1964
A general survey of the principles of radio astronomy receivers is presented. System noise temperature, the sensitivity of different receiver types, and the calibration of receivers are studied. A total-power receiver is analyzed as a basic radio telescope receiver and.
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Radio Astronomy and Radio Telescopes

2010
An astronomical object somewhere in the Planetary System, the Galaxy, a Cluster of Galaxies, or far out in the Universe may generate radio waves by one or the other physical process (a topic of Astrophysics). If the radio emission is generated inside the object, some of the radio waves propagate through the object until they may leave the radio source ...
Michael Bremer, Albert Greve
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Radio Astronomy, Planetary

2003
Planetary radio astronomy is the study of the physical characteristics of the planets in the Solar System by means of the electromagnetic radio radiation emitted by these objects.
Samuel Gulkis, I. de Pater
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