Results 31 to 40 of about 38,209 (292)

ALMA and VLA observations of recombination lines and continuum toward the Becklin-Neugebauer object in Orion

, 2012
Compared to their centimeter-wavelength counterparts, millimeter recombination lines (RLs) are intrinsically brighter and are free of pressure broadening.
Galvan-Madrid, Roberto, Goddi, Ciriaco, Rodriguez, Luis F.   +2 more
core   +1 more source

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

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

Confirming the Primarily Smooth Structure of the Vega Debris Disk at Millimeter Wavelengths [PDF]

, 2012
Clumpy structure in the debris disk around Vega has been previously reported at millimeter wavelengths and attributed to concentrations of dust grains trapped in resonances with an unseen planet. However, recent imaging at similar wavelengths with higher
A. Meredith Hughes, Antonio Hales, Aufdenberg, Backman, Backman, Brian Mason, Bryden, Chen, Chiang, Ciardi, Corder, David J. Wilner, Dicker, Eugene Chiang, Greaves, Heap, Hsin-Fang Chiang, Hughes, John M. Carpenter, Jonathan P. Williams, Kate Su, Koerner, Kuchner, Lagrange, Mark Devlin, Marsh, Mason, Ozernoy, Perryman, Phil Korngut, Richard Plambeck, Rieke, Schneider, Sean M. Andrews, Simon Dicker, Song, Strubbe, Su, Su, Su, van der Bliek, van Leeuwen, Wilner, Wilner, Wyatt, Wyatt, Wyatt   +46 more
core   +2 more sources

OPTICAL SENSOR FOR SURFACE PROFILE MONITORING OF PARABOLIC ANTENNA FOR MILLIMETER AND SUBMILLIMETER ASTRONOMY

Radio Physics and Radio Astronomy, 2016
Purpose: developing the sensor for non-contact measurement and profiling parabolic surfaces of antenna systems in the millimeter and submillimeter range with an aperture diameter up to 2 m.
D. L. Chechetkin, I. P. Belyankin, V. V. Silin, S. I. Slavgorodskiy, V. M. Shulga   +4 more
doaj   +1 more source

NIKA: A millimeter-wave kinetic inductance camera [PDF]

, 2010
Current generation millimeter wavelength detectors suffer from scaling limits imposed by complex cryogenic readout electronics. To circumvent this it is imperative to investigate technologies that intrinsically incorporate strong multiplexing.
A. Benoit, A. Bideaud, A. M. Baryshev, A. Monfardini, B. Klein, Benoit, C. Giordano, C. Hoffmann, C. Tucker, Cooper, Day, F. X. Désert, Gao, Gao, Gildemeister, Golosovsky, Hofheinz, Irwin, J. J. A. Baselmans, K. F. Schuster, L. J. Swenson, M. Calvo, M. Roesch, P. Ade, P. Camus, P. Mauskopf, R. Guesten, Reveret, S. Doyle, S. J. C. Yates, S. Leclercq, Schlaerth, Yates, Yoon   +33 more
core   +6 more sources

Nanoscale Mapping of Plasmonic Charge Transport in Nano‐Resonators Based on Resistive Switching Materials

Advanced Functional Materials, EarlyView.
In this strategy, a conductive nano‐probe is employed to induce nanoscale phase transitions and map the nanoscale conductivity and trap density of GST films. By utilizing the contrasting properties of phase‐change states, nano‐resonators are fabricated that exhibit plasmonic conduction and dramatically different transport characteristics.
Sunwoo Bang, Seunghyo Park, Shashank Shekhar, Yuhyeon Oh, Seunghun Hong   +4 more
wiley   +1 more source

HIGH-PRECISION MICROWAVE SPECTROMETER WITH SUB-DOPPLER SPECTRAL RESOLUTION

Radio Physics and Radio Astronomy, 2014
Results of improvement of the automated millimeter-wave spectrometer of the Institute of Radio Astronomy NAS–Ukraine aimed at reaching a sub-Doppler resolution on the basis of the Lamb-dip observation are presented.
E. A. Alekseev, V. V. Ilyushin, A. A. Mescheryakov   +2 more
doaj   +1 more source

Absolute calibration and beam reconstruction of MITO (a ground-based instrument in the millimetric region)

, 2003
An efficient sky data reconstruction derives from a precise characterization of the observing instrument. Here we describe the reconstruction of performances of a single-pixel 4-band photometer installed at MITO (Millimeter and Infrared Testagrigia ...
A Orlando, De Petris, De Petris, E Palladino, E.S Battistelli, Furniss, G Luzzi, G Savini, Griffin, Hildebrand, L Lamagna, M De Petris, Mainella, Mangum, Ulich, Werner, Whitcomb   +16 more
core   +1 more source

Molecular Gas in the z=1.2 Ultraluminous Merger GOODS J123634.53+621241.3 [PDF]

, 2008
We report the detection of CO(2-1) emission from the z=1.2 ultraluminous infrared galaxy (ULIRG) GOODS J123634.53+621241.3 (also known as the sub-millimeter galaxy GN26). These observations represent the first discovery of high-redshift CO emission using
Alexander, Alexandra Pope, Caputi, Chapman, Chary, Cohen, Cowie, Daddi, Daddi, Dannerbauer, David Hawkins, David P. Woody, David T. Frayer, Douglas C.-J. Bock, Douglas Scott, Downes, Frayer, Frayer, Frayer, Frayer, Huynh, James W. Lamb, Jin Koda, John M. Carpenter, Kovács, Lagache, Le Floc'h, Marc W. Pound, Mark Dickinson, Mark Hodges, Minh T. Huynh, Neri, Nicholas Z. Scoville, Papovich, Pope, Ranga-Ram Chary, Richard L. Plambeck, Sault, Sheth, Smail, Solomon, Stephen L. Scott, Tacconi, Tacconi, Wang, Wang, Wirth, Younger, Younger   +48 more
core   +3 more sources