Mobile Anisotropy Telescope
The Mobile Anisotropy Telescope (MAT), also known as the Mobile Anisotropy Telescope on Cerro Toco (MAT/TOCO or TOCO) was a ground-based radio telescope experiment to measure the anisotropy of the cosmic microwave background (CMB). The experiment was conducted at an observation site on the southern slopes of Cerro Toco in the Atacama Desert of northern Chile. It was a collaboration between the physics departments at Princeton University and the University of Pennsylvania.
Mobile Anisotropy Telescope
- Name
- Mobile Anisotropy Telescope
- Region
- Chile
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Documentary summary
The Mobile Anisotropy Telescope (MAT), also known as the Mobile Anisotropy Telescope on Cerro Toco (MAT/TOCO or TOCO) was a ground-based radio telescope experiment to measure the anisotropy of the cosmic microwave background (CMB). The experiment was conducted at an observation site on the southern slopes of Cerro Toco in the Atacama Desert of northern Chile. It was a collaboration between the physics departments at Princeton University and the University of Pennsylvania.
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In this article
Overview
Overview
The telescope refitted the gondola and receiver from the QMAP experiment, mounted on a donated Nike Ajax trailer. Observations were taken in 1997 and 1998 from the Cerro Toco site, at an elevation of approximately 5,200 m (17,000 ft), with measurements of the angular power spectrum of the CMB in the multipole moment range of 50 to 400.
Key facts
Key facts
• Name — Mobile Anisotropy Telescope • Location — Cerro Toco, Atacama Desert, Chile • Website — Princeton University MAT site University of Pennsylvania MAT site
Instrumentation
Instrumentation
The receiver was equipped with SIS and HEMT detector systems with two SIS channels operated at 144 GHz and six HEMT channels, two with center frequencies of 31 GHz (Ka band) and four with center frequencies of 42 GHz (Q band). The two SIS mixers observed one beam each, with one SIS mixer at 0.2 degrees and the other at 0.3 degree. The Ka band HEMT channels observed the same pixel in the sky, orthogonally polarized to each other. Whereas the Q band HEMT channels observed two independent pixels in the sky, with two orthogonal polarizations for each pixel. The optics consisted of a 0.86 m off-axis parabolic mirror and a computer-controlled chopper mirror. An array of corrugated feed horns connected the optics to the receiver.
Results
Results
The experiment aided in the detection of the first peak of the CMB's anisotropy power spectrum.
Identity
Identity
Mobile Anisotropy Telescope is associated with Chile.
Primary material
Documents and archives
Institutional database
- arXiv, Cornell University, preprints naming “Mobile Anisotropy Telescope”
Scholarly · arXiv (Cornell University)
reference work
- “Mobile Anisotropy Telescope”, English Wikipedia, consulted as further reading
Reputable secondary · Wikipedia
authority record
- Wikidata, structured authority record Q3859719: Mobile Anisotropy Telescope
General reference · Wikidata
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Miller, A. The QMAP and MAT/TOCO Experiments for Measuring Anisotropy in the Cosmic Microwave Background. The Astrophysical Journal Supplement Series. 140. 2. 115–141. June 2002. 0067-0049.
- 2.MAT / Site. lambda.gsfc.nasa.gov.
- 3.MAT / Team. lambda.gsfc.nasa.gov.
- 4.QMAP Home Page. 2007-04-06.
- 5.MAT / Instrument. lambda.gsfc.nasa.gov.
- 6.MAT / Results. lambda.gsfc.nasa.gov.
- 7.Miller, A. D. A Measurement of the Angular Power Spectrum of the Cosmic Microwave Background from l = 100 to 400. The Astrophysical Journal. 524. 1. L1. September 1999. 0004-637X.
- 8.Bennett, C. L. First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results. The Astrophysical Journal Supplement Series. 148. 1. 1–27. September 2003. 0067-0049.
References
Citations
References
Each reference names the institution holding it, so a reader may go to the document itself.
Institutional database
arXiv, Cornell University, preprints naming “Mobile Anisotropy Telescope”arXiv (Cornell University)
Institutional witnessreference work
Secondary witnessauthority record
General reference
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