Results 21 to 30 of about 2,356 (224)

A Low Noise Receiver for Submillimeter Astronomy [PDF]

SPIE Proceedings, 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 elements.
Wengler, M. J., Woody, D. P., Miller, R. E., Phillips, T. G.   +3 more
openaire   +2 more sources

ALMA Millimeter/Submillimeter Sources among Spitzer SMUVS Galaxies at z > 2 in the COSMOS Field

The Astrophysical Journal, 2023
Submillimeter observations reveal the star formation activity obscured by dust in the young Universe. It still remains unclear how galaxies detected at submillimeter wavelengths are related to ultraviolet/optical-selected galaxies in terms of their ...
Tomoko L. Suzuki, Sophie E. van Mierlo, Karina I. Caputi   +2 more
doaj   +1 more source

ALMA 1.1 mm Observations of a Conservative Sample of High-redshift Massive Quiescent Galaxies in SHELA

The Astrophysical Journal, 2023
We present a sample of 30 massive (log( M _* / M _⊙ ) > 11) z = 3–5 quiescent galaxies selected from the Spitzer-HETDEX Exploratory Large Area (SHELA) Survey and observed at 1.1 mm with Atacama Large Millimeter/submillimeter Array (ALMA) Band 6 ...
Katherine Chworowsky, Steven L. Finkelstein, Justin S. Spilker, Gene C. K. Leung, Micaela B. Bagley, Caitlin M. Casey, Caryl Gronwall, Shardha Jogee, Rebecca L. Larson, Casey Papovich, Rachel S. Somerville, Matthew Stevans, Isak G. B. Wold, L. Y. Aaron Yung   +13 more
doaj   +1 more source

Simulating the Radiation Loss of Superconducting Submillimeter Wave Filters and Transmission Lines Using Sonnet EM

, 2020
Superconducting resonators and transmission lines are fundamental building blocks of integrated circuits for millimeter-submillimeter astronomy. Accurate simulation of radiation loss from the circuit is crucial for the design of these circuits because ...
Murugesan, V. (author), Baselmans, J.J.A. (author), Endo, A. (author), Thoen, David (author), Pascual Laguna, A. (author), Hähnle, S.A. (author), Karatsu, K. (author)   +6 more
core   +1 more source

ALMA High-frequency Long-baseline Campaign in 2019: Band 9 and 10 In-band and Band-to-band Observations Using ALMA’s Longest Baselines

The Astrophysical Journal Supplement Series, 2023
The Atacama Large Millimeter/submillimeter Array high-frequency long-baseline campaign in 2019 (HF-LBC-2019) was arranged to undertake band 9 (690 GHz) and 10 (850 GHz) observations using the longest 16 km baselines in order to explore calibration ...
Luke T. Maud, Yoshiharu Asaki, Hiroshi Nagai, Takafumi Tsukui, Akihiko Hirota, Edward B. Fomalont, William R. F. Dent, Satoko Takahashi, Neil Phillips   +8 more
doaj   +1 more source

The Submillimeter Wave Astronomy Satellite [PDF]

International Astronomical Union Colloquium, 1990
AbstractThe Submillimeter Wave Astronomy Satellite (SWAS) is a NASA Small-Explorer Class experiment whose objective is to study both the chemical composition and the thermal balance in dense (NH2 > 103 cm−3) molecular clouds and, by observing many clouds throughout our galaxy, relate these conditions to the processes of star formation.
openaire   +1 more source

Microwave Kinetic Inductance Detectors [PDF]

, 2005
Low temperature detectors have been a subject of intense interest to the scientific community over the last decade. These detectors work at very low temperatures, often well below 1 Kelvin, to minimize the noise in the measurement of photons.
Mazin, Benjamin A.
core   +1 more source

Status and Performance of the Balanced Superconductor-insulator-superconductor Receivers for the Leighton Chajnantor Telescope

The Astronomical Journal
In this paper, we report on the current status and performance of the balanced superconductor-insulator-superconductor (SIS) receiver suite developed for the Leighton Chajnantor Telescope (LCT).
Duo Cao, Lingchen Zuo, Runze Jing, Boxun Wang, Feng Liu, Liping Fu, Wangzhou Shi, Chenggang Shu   +7 more
doaj   +1 more source

Advanced aqueous alteration in primitive meteorites: Micro‐ to nanoscale studies of CR1 iron sulfides

Meteoritics &Planetary Science, EarlyView.
Abstract This study documents micro‐ to nanoscale observations of primary nebular and secondary parent body iron sulfides in the CR1 GRO 95577. Despite the extensive alteration of the bulk sample, some primary sulfides managed to avoid alteration, having originally formed in the solar nebula during chondrule formation by either fission‐sulfidization or
S. A. Singerling
wiley   +1 more source

Superconducting Coplanar Waveguide Filters for Submillimeter Wave On-Chip Filterbank Spectrometers [PDF]

, 2016
We show the first experimental results which prove that superconducting NbTiN coplanar–waveguide resonators can achieve a loaded Q factor in excess of 800 in the 350 GHz band.
Murugesan, V. (author), Yates, S. J. C., Endo, A. (author), Van der Werf, P.P., Baryshev, A. M., Klapwijk, T. M., Thoen, D.J., Baryshev, A.M., A. Endo, Baselmans, J.J.A., Bueno, J. (author), A. M. Baryshev, Murugesan, V., Klapwijk, T.M., Van der Werf, P.P. (author), Baselmans, J. J. A., Yates, S.J.C. (author), Thoen, D.J. (author), D. J. Thoen, Bueno, J., van der Werf, P. P., P. P. van der Werf, Yates, S.J.C., Endo, A., Baryshev, A.M. (author), Baryshev, A. M.; id_orcid, T. M. Klapwijk, Thoen, D. J., Klapwijk, T.M. (author), Baselmans, J.J.A. (author), V. Murugesan, J. J. A. Baselmans, S. J. C. Yates, J. Bueno   +33 more
core   +1 more source