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If the dark matter halos of galaxies contain large numbers of subhalos as predicted by the $\Lambda$CDM model, these subhalos are expected to appear in strong galaxy--galaxy lens systems as small--scale perturbations in individual images.…

Astrophysics of Galaxies · Physics 2017-09-13 Saghar Asadi , Erik Zackrisson , Emily Freeland

The Atacama Large Millimeter/Submillimeter Array (ALMA) is an international effort to construct an instrument capable of matching the exquisite imaging properties of optical space telescopes at millimeter and submillimeter wavelengths. ALMA…

Astrophysics · Physics 2007-05-23 Jean L. Turner , Alwyn Wootten

We analyse the multi-frequency radio spectral properties of $41$ 6GHz-detected ALMA-identified, submillimetre galaxies (SMGs), observed at 610MHz, 1.4GHz, 6GHz with GMRT and the VLA. Combining high-resolution ($\sim0.5''$) 6GHz radio and…

The Advanced Atacama Cosmology Telescope Polarimeter (AdvACT) \cite{thornton} is an upgrade for the Atacama Cosmology Telescope using Transition Edge Sensor (TES) detector arrays to measure cosmic microwave background (CMB) temperature and…

The Atacama Large Millimeter/submillimeter (ALMA) Array Front End (FE) system is the first element in a complex chain of signal receiving, conversion, processing and recording. 70 Front Ends will be required for the project. The Front End…

Instrumentation and Methods for Astrophysics · Physics 2010-09-02 Geoffrey A. Ediss , Joshua Crabtree , Kirk Crady , Erik Gaines , Morgan McLeod , Greg Morris , Rick Williams , Antonio Perfetto , John Webber

The Herschel Satellite and the Atacama Large Millimeter Array (ALMA) are two very large sub-mm and far infrared (FIR) astronomy projects that are expected to come into operation in this decade. This report contains descriptions of these…

Astrophysics · Physics 2007-05-23 T. L. Wilson , D. Elbaz , eds

In this paper we present simulated Atacama Large Millimetre/sub-millimetre Array (ALMA) observations of self-gravitating circumstellar discs with different properties in size, mass and inclination, located in four of the most extensively…

Solar and Stellar Astrophysics · Physics 2014-09-09 Giovanni Dipierro , Giuseppe Lodato , Leonardo Testi , Itziar de Gregorio Monsalvo

Atacama Large Millimeter/Submillimeter Array (ALMA) is promising to be a powerful tool for precision astrometry of the area around Sagittarius A$^\ast$ (Sgr A$^\ast$) because it has the high angular resolution, high sensitivity, and wide…

Astrophysics of Galaxies · Physics 2022-06-08 Masato Tsuboi , Takahiro Tsutsumi , Atsushi Miyazaki , Ryosuke Miyawaki , Makoto Miyoshi

Characterizing the variability of the extragalactic sources used for calibration in the Atacama Large Millimeter/Sub-millimeter Array (ALMA) is key to assess the flux scale uncertainty of science observations. To this end, we model the…

Instrumentation and Methods for Astrophysics · Physics 2019-08-12 A. E. Guzmán , C. Verdugo , H. Nagai , Y. Contreras , G. Marinello , R. Kneissl , K. Nakanishi , J. Ueda

The most complete catalogue of nearby stars (Gliese and Jarheiss, 1991) has been used to search for the stars whose photospheric thermal emission can be detected by the future millimeter array ALMA. We found that 446 nearby stars with…

Astrophysics · Physics 2007-05-23 Jean-Francois Lestrade

The Atacama Large Millimeter/submillimeter Array (ALMA) will be a valuable tool for observing the chromosphere of our Sun at (sub-)millimeter wavelengths at high spatial, temporal and spectral resolution and as such has great potential to…

Solar and Stellar Astrophysics · Physics 2015-02-24 Sven Wedemeyer , Tim Bastian , Roman Brajsa , Miroslav Barta , Masumi Shimojo

Solar observations at sub-mm, mm and cm wavelengths offer a straightforward diagnostic of physical conditions in the solar atmosphere because they yield measurement of brightness temperature which, for optically thick features, equals…

Solar and Stellar Astrophysics · Physics 2022-09-07 Costas Alissandrakis , Timothy Bastian , Roman Brajša

We have implemented control and data-taking software that makes it possible to scan the beams of individual ALMA antennas to perform quite complex patterns while recording the signals at high rates. We conducted test observations of the Sun…

Instrumentation and Methods for Astrophysics · Physics 2015-02-24 Neil Phillips , Richard Hills , Tim Bastian , Hugh Hudson , Ralph Marson , Sven Wedemeyer

Characterizing the galaxy population in the early Universe holds the key to understanding the evolution of these objects and the role they played in cosmic reionization. However, the number of observations at the very highest redshifts are…

We present new measurements of the millimeter wavelength continuum emission from the long period variable Mira ($o$ Ceti) at frequencies of 46 GHz, 96 GHz, and 229 GHz ($\lambda$~7 mm, 3 mm, and 1 mm) based on observations obtained with the…

Solar and Stellar Astrophysics · Physics 2015-08-06 L. D. Matthews , M. J. Reid , K. M. Menten

The advent of the Atacama Large Millimeter/submillimeter Array (ALMA) has enabled a new era for studies of the formation and assembly of distant galaxies. Cosmological deep field surveys with ALMA and other interferometers have flourished…

Astrophysics of Galaxies · Physics 2020-06-10 Manuel Aravena

We report on a search for artificial narrowband signals of 20 stars within the restricted Earth Transit Zone as a part of the ten-year Breakthrough Listen (BL) search for extraterrestrial intelligence. The restricted Earth Transit Zone is…

Earth and Planetary Astrophysics · Physics 2020-06-19 Sofia Z. Sheikh , Andrew Siemion , J. Emilio Enriquez , Danny C. Price , Howard Isaacson , Matt Lebofsky , Vishal Gajjar , Paul Kalas

We present the star formation rates (SFRs) of a sample of 109 galaxies with X-ray selected active galactic nuclei (AGN) with moderate to high X-ray luminosities (L(2-8keV)= 10^42-10^45 erg/s), at redshifts 1 < z < 4.7, that were selected to…

Astrophysics of Galaxies · Physics 2018-05-16 F. Stanley , C. M. Harrison , D. M. Alexander , J. Simpson , K. K. Knudsen , J. R. Mullaney , D. J. Rosario , J. Scholtz

The observational study of stars in the sub-millimetre regime has only rather recently begun and was made possible mainly by the Atacama Large Millimeter/submillimeter Array (ALMA). The emission mechanisms of this radiation from normal MS…

Solar and Stellar Astrophysics · Physics 2019-04-08 Rene' Liseau
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