Results 11 to 20 of about 247,048 (296)

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

Design of high-performance millimeter wave and sub-millimeter wave quasi-optical isolators and circulators [PDF]

, 2007
Faraday rotators using permanently magnetized ferrite materials are used to make quasi-optical isolators and circulators at millimeter wave and sub-millimeter wave frequencies that have far higher performance than their waveguide equivalents.
Goy, P, Graham M. Smith, Robertson, Duncan Alexander, Philippe Goy, Duncan A. Robertson, Hunter, Robert Iain, Smith, Graham Murray, Robert I. Hunter   +7 more
core   +2 more sources

Millimeter/submillimeter fourier transform spectroscopy of Jovian planet atmospheres [PDF]

, 1996
A new Fourier transform spectrometer, built for use at the Caltech Submillimeter Observatory, has been used to observe all four of the jovian planets (Jupiter, Saturn, Uranus, and Neptune) in the millimeter-submillimeter wavelength range (0.3- 3.0 mm).
Weisstein, Eric W.
core   +1 more source

The PhotoDissociation Region Toolbox: Software and Models for Astrophysical Analysis

The Astronomical Journal, 2022
The PhotoDissociation Region Toolbox provides comprehensive, easy-to-use, public software tools and models that enable an understanding of the interaction of the light of young, luminous, massive stars with the gas and dust in the Milky Way and in other ...
Marc W. Pound, Mark G. Wolfire
doaj   +1 more source

Optimizing End-to-End System Performance for Millimeter and Submillimeter Spectroscopy of Protostars: Wideband Heterodyne Receivers and Sideband-Deconvolution Techniques for Rapid Molecular-Line Surveys [PDF]

, 2011
This thesis describes the construction, integration, and use of a new 230-GHz ultra-wideband heterodyne receiver, as well as the development and testing of a new sideband-deconvolution algorithm, both designed to enable rapid, sensitive molecular-line ...
Sumner, Matthew Casey
core   +1 more source

Millimeter-Wave MMICs and Applications [PDF]

, 2003
As device technology improves, interest in the millimeter-wave band grows. Wireless communication systems migrate to higher frequencies, millimeter-wave radars and passive sensors find new solid-state implementations that promise improved performance ...
Morgan, Matthew Alexander
core   +1 more source

Measurements and Evaluations of the Atmospheric Transparency at Short Millimeter Wavelengths at Candidate Sites for Millimeter- and Sub-Millimeter-Wave Telescopes

Applied Sciences, 2023
Radio astronomical observations at millimeter and submillimeter wavelengths are a very important tool for astrophysical research. However, there is a huge area in northeastern Eurasia, including the whole Russian territory, which lacks sufficiently large
Igor I. Zinchenko, Alexander V. Lapinov, Vyacheslav F. Vdovin, Peter M. Zemlyanukha, Tatiana A. Khabarova   +4 more
doaj   +1 more source

Superconducting Microwave Resonator Arrays for Submillimeter/Far-infrared Imaging [PDF]

, 2012
Superconducting microwave resonators have the potential to revolutionize submillimeter and far-infrared astronomy, and with it our understanding of the universe.
Noroozian, Omid
core   +1 more source

CMOS System-on-Chip Spectrometer Processors for Spaceborne Microwave-to-THz Earth and Planetary Science and Radioastronomy

IEEE Journal of Microwaves, 2022
This article presents development of CMOS system-on-chip spectrometer processor for Spaceborne Earth Science, Planetary Science and Astronomy. The developed chip is intended for use in rotational emission spectroscopy observations from microwave to sub ...
Adrian Tang, Yangyho Kim, Yan Zhang, Gabriel Virbila, Nathaniel Livesey, Goutam Chattopadhyay, Subash Khanal, Jacob Kooi, Mau-Chung Frank Chang   +8 more
doaj   +1 more source