搜索结果: 1-15 共查到“知识库 Astronomy”相关记录47条 . 查询时间(0.081 秒)
Submillimeter Wave Astronomy Satellite observations of Comet 9P/Tempel 1 and Deep Impact
Comet Tempel-1 Radiative Transfer Radio Observations Comets
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2014/12/23
On 4 July 2005 at 5:52 UT the Deep Impact mission successfully completed its goal to hit the nucleus of 9P/Tempel 1 with an impactor, forming a crater on the nucleus and ejecting material into the com...
The Five College Radio Astronomy Observatory CO mapping survey of the Taurus molecular cloud
clouds general
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2014/12/23
The FCRAO Survey of the Taurus molecular cloud observed the 12CO and 13CO J = 1–0 emission from 98 deg2 of this important, nearby, star-forming region. This set of data with 45'' resolution comprises ...
A wideband analog correlating spectrometer for millimeter astronomy
Simulation The spectrometer Mm astronomy Broadband analog spectrometer Circuit board delay line The input signal
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2014/12/9
This project developed an analog correlating spectrometer intended for use in millimeter Astronomy. It is based in part on the Wideband Analog Spectrometers (WASP and WASP-II) built by Harris, et al (...
Citations to Australian Astronomy: 5 and 10 Year Benchmarks
sociology of astronomy publications bibliography astronomical databases surveys
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2012/2/24
Expanding upon Pimbblet's informative 2011 analysis of career h-indices for members of the Astronomical Society of Australia, we provide additional citation metrics which are geared to a) quantifying ...
Space Astronomy for the mid-21st Century: Robotically Maintained Space Telescopes
Space Astronomy the mid-21st Century Robotically Maintained Space Telescopes
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2012/2/24
The historical development of ground based astronomical telescopes leads us to expect that space-based astronomical telescopes will need to be operational for many decades. The exchange of scientific ...
Publication Trends in Astronomy: The Lone Author
Publication Trends Astronomy Lone Author SAO/NASA Astrophysics Data System
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2012/2/24
In this short communication I highlight how the number of collaborators on papers in the main astronomy journals has evolved over time. We see a trend of moving away from single-author papers. This co...
Accelerating Radio Astronomy Cross-Correlation with Graphics Processing Units
Radio astronomy Graphics Processing Unit Signal Processing Correlation
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2011/10/13
We present a highly parallel implementation of the cross-correlation of time-series data using graphics processing units (GPUs), which is scalable to hundreds of independent inputs and suitable for th...
Observing Conditions for Submillimeter Astronomy
Atmospheric e ects Site testing Submillimeter general
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2011/10/20
Consistently superb observing conditions are crucial for achieving the scientific objectives of a telescope. Submillimeter astronomy is possible only at a few exceptionally dry sites, notably Mauna Ke...
Multimessenger astronomy with pulsar timing and X-ray observations of massive black hole binaries
Black hole physics – Accretion, accretion discs – Gravitational waves –pulsars: general – X-rays: general
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2011/10/9
We demonstrate that very massive (>10^8\msun), cosmologically nearby (z<1) black hole binaries (MBHBs), which are primary targets for ongoing and upcoming pulsar timing arrays (PTAs), are particularly...
Gamma-Ray Astronomy with ARGO-YBJ
TeV gamma-ray flares Gamma rays:observations Galaxy:Crab Nebula
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2011/8/17
Abstract: ARGO-YBJ is a full coverage air shower array located at the YangBaJing Cosmic Ray Laboratory (Tibet, P.R. China, 4300 m a.s.l., 606 g/cm^2) recording data with a duty cycle $\geq$85% and an ...
Introduction to pinhole astronomy
Introduction pinhole astronomy
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2011/9/28
The observation of the Sun with a pinhole in order to check the first and the second Kepler's law has been realized for high school students. The settling of the experiment in order to minimize the er...
Astronomy in the Church: the Clementine Sundial in Santa Maria degli Angeli, Rome
Astronomy Church the Clementine Sundial
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2011/9/14
Pope Clement XI (1700-1721) ordered Francesco Bianchini (1662-1729) to build a Meridian Line. Bianchini was the Secretary of the Commission for the Calendar. He chose the Basilica of Santa Maria degli...
Comparison of LISA and Atom Interferometry for Gravitational Wave Astronomy in Space
LISA and Atom Interferometry Gravitational Wave Astronomy Space
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2011/9/14
One of the atom interferometer gravitational wave missions proposed by Dimopoulos et al.1 in 2008 was called AGIS-Sat. 2. It had a suggested gravitational wave sensitivity set by the atom state detect...
Atacama Large Millimeter Array Local Oscillator: How Photonics is Enabling Millimeter-wave Astronomy
Telescopes Phased Array Imaging Systems
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2015/5/21
In this talk we will describe the unique photonic technology that provides the reference for the local oscillator system of the ALMA millimeter wave radio telescope as well as describing the “down-str...
Astronomy with Radioactivities: Chapter 9, Nuclear Reactions
Astronomy Radioactivities Chapter 9 Nuclear Reactions
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2011/1/7
Nuclear reaction rates determine the abundances of isotopes in stellar burning processes.A multitude of reactions determine the reaction flow pattern which is described in terms of reaction network si...