Results 11 to 20 of about 38,209 (292)

The fastscanning observing technique for millimeter and submillimeter astronomy [PDF]

Astronomy & Astrophysics, 2001
Fastscanning is a new observing technique for millimeter and submillimeter astronomy from ground based telescopes. The atmosphere is eliminated by taking advantage of detector arrays. Instead of wobbling the secondary mirror with a fixed frequency of a few Hz to filter the atmospheric contribution, we sample the detector outputs at a much higher rate ...
L. A. Reichertz, B. Weferling, W. Esch, E. Kreysa   +3 more
openaire   +3 more sources

Satellite-based atmospheric characterization for sites of interest in millimeter and sub-millimeter astronomy

Astronomy & Astrophysics
Context. Water vapor is the main source of atmospheric opacity for millimeter and sub-millimeter astronomy. Hence, several studies seek to effectively characterize it for site-testing purposes. In this task, reanalysis databases are quickly becoming a popular alternative to on-site measurements due to easy accessibility and the versatility of the data ...
L. Valeria, M. Martínez-Ledesma, R. Reeves   +2 more
openaire   +3 more sources

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

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, Giampaolo Pisano, Luca Olmi, Pietro Bolli, Carole Tucker   +4 more
openaire   +3 more sources

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

Dust emission and star formation toward a redshift 5.5 QSO [PDF]

, 2002
We report observations of the low-luminosity z = 5.50 quasar RD J030117+002025 (RD0301 hereafter) at 250 GHz (1.20mm) using the Max-Planck Millimeter Bolometer (MAMBO) array at the IRAM 30-meter telescope.
Adelberger, Almaini, Anderson, Becker, Becker, Benford, Carilli, Carilli, Chini, Djorgovski, Elvis, F. Bertoldi, Fan, Fan, Fan, Fan, Genzel, Isaak, Kennefick, Kennefick, Kreysa, Kreysa, Magorrian, Omont, P. Cox, Page, Peacock, Radford, Sanders, Schneider, Sharp, Stern, Zheng   +32 more
core   +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., Barkats, Denis, Battle, John O., Bierman, Evan M., Bock, James J., Chiang, H. Cynthia, Dowell, C. Darren, Duband, L., Hivon, Eric F., Holzapfel, William L., Hristov, Viktor V., Jones, William C., Kaufman, J. P., Keating, Brian G., Kovac, John M., Kuo, Chao-Lin, Lange, Andrew E., Leitch, Erik M., Mason, Peter V., Matsumura, Tomotake, Nguyen, Hien T., Ponthieu, Nicolas, Rocha, Graca M., Takahashi, Yuki D., Yoon, Ki Won   +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., Austermann J., Beall J., Halverson N., Hubmayr J., Jaehnig G., McKenney C. M., Raymond B., Suzuki A.   +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, David T. Chuss, James A. Chervenak, Ross M. Henry, S. Harvey Moseley, Edward J. Wollack   +5 more
openaire   +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