Results 151 to 160 of about 569 (189)

Coherent Detector Arrays for Millimeter and Submillimeter Astronomy

2009
Progress in many areas of astronomy requires large-area surveys and observations of extended objects. This includes the cosmic microwave background, nearby galaxies, the Milky Way, and regions of star-forming regions within our galaxy. The ability to carry out such studies is critically dependent on the development of affordable high-sensitivity focal ...
Goldsmith, Paul F., Carpenter, John M., Erickson, Neal, Fisher, Rick, Ford, John, Todd, Gaier, Groppi, Chris, Harris, Andy, Mark, Heyer, Kulesa, Craig, Lawrence, Charles, Morgan, Matt, Mundy, Lee, Narayanan, Gopal, O'Neil, Karen, Readhead, Tony, Samoska, Lorene, Schloerb, Peter, Snell, Ronald, Walker, Christopher C., Ziurys, Lucy   +20 more
openaire   +1 more source

Radio and Submillimeter Astronomy: Radio Telescopes

2016
Radio astronomy, the first astronomy after the optical one, investigates the radio emission of celestial sources. This chapter discusses the receiver systems based on the superheterodyne technique, investigating the different components: antennas, amplifiers, mixers, and detectors. The faintness of the radio signals demands radio telescope systems with
openaire   +1 more source

Submillimeter Astronomy and Mauna Kea - An Overview

2007 IEEE/MTT-S International Microwave Symposium, 2007
Astronomy in the submillimeter region of the electromagnetic spectrum, covering wavelengths between 1 mm and 0.1 mm, is now just past its 30th anniversary. During this period there has been enormous progress in technology for detecting and analyzing signals. This has led to discovery of astronomical sources not even considered when observations in this
openaire   +1 more source

Highly sensitive heterodyne receivers for submillimeter-wave astronomy

2000
This paper reports the current status in our development of sensitive heterodyne detectors for the efficient down-conversion of submillimeter-wave signals to D-band. These detectors use the strong non-linearities of Nb/Al/AlOx/Nb tunnel junctions and employ waveguide or quasi-optical techniques to couple local-oscillator and radio-frequency signals to ...
D. Andreone, BAVA, ELIO, L. Brunetti, V. Laquaniti, E. Natale, G. Sironi, R. Steni, J. Thorpe   +7 more
openaire   +3 more sources

A synthesis arrary for lunar submillimeter astronomy

AIP Conference Proceedings, 1990
This paper describes a system concept for a Synthsis Array for Lunar Submillimeter Astronomy (SALSA). It includes a brief discussion of the science objectives and the advantages of placing such an array on the moon, the system concept, and a top‐level discussion of the various subsystems, including the technology drivers associated with each.
openaire   +1 more source

Radio and Submillimeter Astronomy: Receivers and Spectrometers

2016
This chapter presents the different radio receiver configurations used to achieve the high stability demanded by the high gains required for the detection. The radio spectrometers are discussed. The chapter is closed by a discussion of the measurements of the CMB.
openaire   +1 more source

The Submillimeter Wave Astronomy Satellite

1991 IEEE MTT-S International Microwave Symposium Digest, 1991
P.F. Goldsmith, A. Dalgarno, N.R. Erickson, G.G. Fazio, M. Harwit, D.J. Hollenbach, D.G. Koch, G.J. Melnick, D.A. Neufeld, R. Schieder, R.L. Snell, J. Stauffer, P. Thaddeus, G.F. Winnewisser   +13 more
openaire   +1 more source

Bright satellites are disrupting astronomy research worldwide

Nature, 2023
Samantha M Lawler
exaly  

Extra-atmospheric submillimeter astronomy

Uspekhi Fizicheskih Nauk, 1969
openaire   +1 more source

Astrophotonics: astronomy and modern optics

Astronomy and Astrophysics Review, 2021
Robert J Harris
exaly