Results 11 to 20 of about 38,151 (299)
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 +68 more
doaj +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
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 +4 more
doaj +1 more source
Reflective Toraldo pupil for high-resolution millimeter-wave astronomy [PDF]
Applied Optics, 2020 A novel, to the best of our knowledge, beam-shaping reflective surface for high-resolution millimeter/submillimeter-wave astronomy instruments is presented. The reflector design is based on Toraldo’s super-resolution principle and implemented with annulated binary-phase coronae structure inspired by the achromatic magnetic mirror approach. A thin, less
Alexey Shitvov +4 more
openaire +3 more sources
CMB polarimetry with BICEP: instrument characterization, calibration, and performance [PDF]
, 2008 BICEP is a ground-based millimeter-wave bolometric array designed to target the primordial gravity wave signature on the polarization of the cosmic microwave background (CMB) at degree angular scales. Currently in its third year of operation at the South
Ade, P. +24 more
core +4 more sources
Development of Flat Silicon-Based Mesh Lens Arrays for Millimeter and Sub-millimeter Wave Astronomy [PDF]
Journal of Low Temperature Physics, 2020 AbstractThe high sensitivity requirements set by future cosmic microwave background instruments are pushing the current technologies to produce highly performant focal plane arrays with thousands of detectors. The coupling of the detectors to the telescope optics is a challenging task.
Pisano G. +8 more
openaire +5 more sources
Compact radiative control structures for millimeter astronomy [PDF]
SPIE Proceedings, 2010 We have designed, fabricated, and tested compact radiative control structures, including antireflection coatings and resonant absorbers, for millimeter through submillimeter wave astronomy. The antireflection coatings consist of micromachined single crystal silicon dielectric sub-wavelength honeycombs.
Ari D. Brown +5 more
openaire +1 more source
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 +8 more
doaj +1 more source
Outflows and disks of brown dwarfs with SMA, CARMA and ALMA
EPJ Web of Conferences, 2013 Brown dwarfs are on the dividing line between planets and stars. Up to date, about 1,000 brown dwarfs, including the coolest known brown dwarfs with temperatures of ∼300 K as cool as the human body, have been discovered.
Tho Do D. +4 more
doaj +1 more source
A NEXT GENERATION MULTI-BEAM FOCAL PLANE ARRAY RECEIVER OF TRAO FOR 86-115 GHZ BAND [PDF]
Journal of Astronomy and Space Sciences, 2006 The noise temperature of existing millimeter-wave receivers is already within two or three times quantum noise limit. One of practical ways to increase the observation speed of single dish radio telescope without longer integration time is use of multi ...
Moon-Hee Chung +5 more
doaj +1 more source