Results 1 to 10 of about 38,209 (292)

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

Astronomy & Astrophysics, 2005
The core architecture, tests in the lab and first results of a Fast Fourier Transform (FFT) spectrometer are described. It is based on a commercially available fast digital sampler (AC240) with an on-board Field Programmable Gate Array (FPGA).
A. O. Benz, B. Stuber, Belgacem, C. Monstein, Cole, D. Zardet, H. Meyer, Lecacheux, Lee, P. C. Grigis, Schieder, V. Hungerbühler   +11 more
core   +4 more sources

Mexico-UK Sub-millimeter Camera for AsTronomy [PDF]

Journal of Low Temperature Physics, 2018
MUSCAT is a large format mm-wave camera scheduled for installation on the Large Millimeter Telescope Alfonso Serrano (LMT) in 2018. The MUSCAT focal plane is based on an array of horn coupled lumped-element kinetic inductance detectors optimised for ...
Ade, Peter, Barry, Peter, Brien, Thom, Castillo-Dominguez, Edgar, Doyle, Simon, Ferrusca, Daniel, Gomez-Rivera, Victor, Hargrave, Peter, Hornsby, Amber, Hughes, David, Mauskopf, Phillip, Moseley, Paul, Pascale, Enzo, Perez-Fajardo, Abel, Pisano, Giampaolo, Rowe, Samuel, Tucker, Carole, Velazquez, Miguel   +17 more
core   +6 more sources

NOEMA complementarity with NIKA2 [PDF]

EPJ Web of Conferences, 2020
IRAM operates two observatories - the 30-meter Telescope on Pico Veleta in Spain and NOEMA, an interferometer of ten 15-meter antennas on Plateau de Bure in France. Both observatories allow to observe at millimeter wavelengths. Here, we aim at discussing
Lefèvre Charlène, Kramer Carsten, Neri Roberto, Berta Stefano, Schuster Karl   +4 more
doaj   +1 more source

The Haystack Telescope as an Astronomical Instrument

Galaxies, 2023
The Haystack Telescope is an antenna with a diameter of 37 m and an elevation-dependent surface accuracy of ≤100μm that is capable of millimeter-wave observations.
Jens Kauffmann, Ganesh Rajagopalan, Kazunori Akiyama, Vincent Fish, Colin Lonsdale, Lynn D. Matthews, Thushara G.S. Pillai   +6 more
doaj   +1 more source

Non-Hermitian Skin Effect in a Non-Hermitian Electrical Circuit

Research, 2021
The conventional bulk-boundary correspondence directly connects the number of topological edge states in a finite system with the topological invariant in the bulk band structure with periodic boundary condition (PBC).
Shuo Liu, Ruiwen Shao, Shaojie Ma, Lei Zhang, Oubo You, Haotian Wu, Yuan Jiang Xiang, Tie Jun Cui, Shuang Zhang   +8 more
doaj   +1 more source

2 mm Observations and the Search for High-redshift Dusty Star-forming Galaxies

The Astrophysical Journal, 2023
Finding high-redshift ( z ≫ 4) dusty star-forming galaxies is extremely challenging. It has recently been suggested that millimeter selections may be the best approach since the negative K-correction makes galaxies at a given far-infrared luminosity ...
L. L. Cowie, A. J. Barger, F. E. Bauer
doaj   +1 more source

A Low-Insertion Loss Cryogenic Edge-Mode Isolator With 18 GHz Bandwidth

IEEE Journal of Microwaves, 2023
Cryogenic isolators play an important role in low-noise receiver systems widely employed in millimeter and submillimeter telescopes. To enable a significantly wider Intermediate Frequency (IF) bandwidth, there is strong demand for a wideband, low-loss ...
Lingzhen Zeng, Cheuk-Yu Edward Tong, Scott N. Paine   +2 more
doaj   +1 more source

Phase and Amplitude Drift Research of Millimeter Wave Band Local Oscillator System [PDF]

Journal of Astronomy and Space Sciences, 2010
In this paper, we developed a local oscillator (LO) system of millimeter wave band receiver for radio astronomy observation. We measured the phase and amplitude drift stability of this LO system.
Changhoon Lee, Do Heung Je, Kwang Dong Kim, Bong Won Sohn   +3 more
doaj   +1 more source

Models of Millimeter and Radio Emission from Interacting Supernovae

The Astrophysical Journal, 2022
This work utilizes established models of synchrotron-powered light curves for core-collapse supernovae in dense circumstellar environments, namely, type IIn and Ibn, to demonstrate the potential for detecting millimeter emission from these events.
Nitika Yadlapalli Yurk, Vikram Ravi, Anna Y. Q. Ho   +2 more
doaj   +1 more source

Simultaneous Millimeter-wave, Gamma-Ray, and Optical Monitoring of the Blazar PKS 2326-502 during a Flaring State

The Astrophysical Journal Letters, 2023
Including millimeter-wave data in multiwavelength studies of the variability of active galactic nuclei (AGN) can provide insights into AGN physics that are not easily accessible at other wavelengths.
J. C. Hood II, A. Simpson, A. McDaniel, A. Foster, P. A. R. Ade, M. Ajello, A. J. Anderson, J. E. Austermann, J. A. Beall, A. N. Bender, B. A. Benson, F. Bianchini, L. E. Bleem, J. E. Carlstrom, C. L. Chang, P. Chaubal, H. C. Chiang, T-L. Chou, R. Citron, C. Corbett Moran, T. M. Crawford, A. T. Crites, T. de Haan, M. A. Dobbs, W. Everett, J. Gallicchio, E. M. George, N. Gupta, N. W. Halverson, G. C. Hilton, G. P. Holder, W. L. Holzapfel, J. D. Hrubes, N. Huang, J. Hubmayr, K. D. Irwin, L. Knox, A. T. Lee, D. Li, A. Lowitz, G. Madejski, M. Malkan, J. J. McMahon, S. S. Meyer, J. Montgomery, T. Natoli, J. P. Nibarger, G. Noble, V. Novosad, Y. Omori, S. Padin, S. Patil, C. Pryke, C. L. Reichardt, J. E. Ruhl, B. R. Saliwanchik, K. K. Schaffer, C. Sievers, G. Smecher, A. A. Stark, C. Tucker, T. Veach, J. D. Vieira, G. Wang, N. Whitehorn, W. L. K. Wu, V. Yefremenko, J. A. Zebrowski, L. Zhang   +68 more
doaj   +1 more source