Results 21 to 30 of about 38,151 (299)

125 - 211 GHz low noise MMIC amplifier design for radio astronomy [PDF]

, 2019
To achieve the low noise and wide bandwidth required for millimeter wavelength astronomy applications, superconductor-insulator-superconductor (SIS) mixer based receiver systems have typically been used.
Cleary, Kieran, Fuller, Gary A., George, Danielle, Lai, Richard, McGenn, William, Mei, Gerry, Readhead, Anthony, White, Daniel   +7 more
core   +2 more sources

Introduction to Millimeter/Sub-millimeter Astronomy [PDF]

, 2018
This is an introduction to the basic elements needed for the measurements and interpretation of data in the millimeter and sub-mm wavelength range. A more complete version will be published in the proceedings of the Saas Fee Winter School 2008.
openaire   +2 more sources

A broadband FFT spectrometer for radio and millimeter astronomy [PDF]

Astronomy & Astrophysics, 2005
Astronomy and Astrophysics, in ...
Benz, Arnold O., Grigis, Paolo C., Hungerbuhler, V., Meyer, Hansueli, Monstein, Cristian, Stuber, Bruno, Zardet, D.   +6 more
openaire   +2 more sources

Herschel Far-Infrared and Sub-millimeter Photometry for the KINGFISH Sample of Nearby Galaxies [PDF]

, 2011
New far-infrared and sub-millimeter photometry from the Herschel Space Observatory is presented for 61 nearby galaxies from the Key Insights on Nearby Galaxies: A Far-Infrared Survey with Herschel (KINGFISH) sample.
A. D. Bolatto, A. E. Miller, A. F. Crocker, A. K. Leroy, Aguirre, B. A. Groves, B. D. Johnson, B. R. Brandl, B. T. Draine, Benford, Bolatto, C. D. Wilson, C. W. Engelbracht, C.-N. Hao, D. A. Dale, D. Calzetti, Dale, Dale, Dale, Dale, Draine, Draine, E. J. Montiel, E. J. Murphy, E. Schinnerer, Engelbracht, F. S. Tabatabaei, F. Walter, Finkbeiner, G. Aniano, G. Helou, H. Roussel, H.-W. Rix, J. Koda, J. L. Hinz, J.-D. T. Smith, K. D. Gordon, K. M. Sandstrom, K. V. Croxall, Kennicutt, Kovács, L. Armus, L. K. Hunt, Li, M. G. Wolfire, M. Galametz, M. Sauvage, Moustakas, N. Rahman, O. Krause, Ott, P. Beirão, P. N. Appleton, Pascale, Pilyugin, R. A. Skibba, R. C. Kennicutt, Roussel, S. E. Meidt, S. Zibetti, Schlegel, Skibba, Smith, Walter, Walter, Weingartner, Y. Li   +66 more
core   +4 more sources

Digital compensation of the side-band-rejection ratio in a fully analog 2SB sub-millimeter receiver [PDF]

, 2018
In observational radio astronomy, sideband-separating receivers are preferred, particularly under high atmospheric noise, which is usually the case in the sub-millimeter range.
Alvear, A., Baryshev, A. M., Bronfman, L., Finger, R., Fuentes, R., Hesper, R., Khudchenko, A., Mena, F. P., Reyes, N., Rodriguez, R.   +9 more
core   +2 more sources

Development of Wideband Tunable E-Band (60-70 GHz) Gunn Oscillator [PDF]

Journal of Astronomy and Space Sciences, 2000
A Gunn waveguide-oscillator, mechanically tunable from 60 to 70 GHz, has been developed for use as a local oscillator (LO) in millimeter radio telescope.
Hyunjoo Kim, Seogtae Han, Taiseong Kim, Yonggi Kim   +3 more
doaj  

Performance of Hybrid NbTiN-Al Microwave Kinetic Inductance Detectors as Direct Detectors for Sub-millimeter Astronomy

, 2014
In the next decades millimeter and sub-mm astronomy requires large format imaging arrays and broad-band spectrometers to complement the high spatial and spectral resolution of the Atacama Large Millimeter/sub-millimeter Array.
Baryshev, A. M., Baselmans, J. J. A., Endo, A., Ferrari, L., Janssen, R. M. J., Klapwijk, T. M., Yates, S. J. C.   +6 more
core   +1 more source

ALMA Fragmented Source Catalog in Orion (FraSCO). I. Outflow Interaction within an Embedded Cluster in OMC-2/FIR 3, FIR 4, and FIR 5

The Astrophysical Journal, 2023
We present a high-angular resolution (∼1″) and wide-field ( $2\buildrel{\,\prime}\over{.} 9\times 1\buildrel{\,\prime}\over{.} 9$ ) image of the 1.3 mm continuum, CO( J = 2–1) and SiO( J = 5–4) line emissions toward an embedded protocluster, FIR 3, FIR 4,
Asako Sato, Satoko Takahashi, Shun Ishii, Paul T. P. Ho, Masahiro N. Machida, John Carpenter, Luis A. Zapata, Paula Stella Teixeira, Sümeyye Suri   +8 more
doaj   +1 more source

Electromagnetic reprogrammable coding-metasurface holograms

Nature Communications, 2017
Realizing metasurfaces with reconfigurability, high efficiency, and control over phase and amplitude is a challenge. Here, Li et al. introduce a reprogrammable hologram based on a 1-bit coding metasurface, where the state of each unit cell of the coding ...
Lianlin Li, Tie Jun Cui, Wei Ji, Shuo Liu, Jun Ding, Xiang Wan, Yun Bo Li, Menghua Jiang, Cheng-Wei Qiu, Shuang Zhang   +9 more
doaj   +1 more source

A Low Noise Receiver for Submillimeter Astronomy [PDF]

, 1986
A broadband, low noise heterodyne receiver, suitable for astronomical use, has been built using a Pb alloy superconducting tunnel junction (SIS). The RF coupling is quasioptical via a bowtie antenna on a quartz lens and is accomplished without any tuning
Miller, R. E., Phillips, T. G., Wengler, M. J., Woody, D. P.   +3 more
core   +1 more source