搜索结果: 1-15 共查到“天文学 Year”相关记录16条 . 查询时间(0.062 秒)
Zoom media briefing:The Event Horizon Telescope, a year after capturing the image of a black hole（图）
Zoom media briefing Event Horizon Telescope year after capturing the image black hole
2020/4/10
Media are invited to join an April 10 Zoom media briefing with Sheperd S. Doeleman, founding director of the Event Horizon Telescope (EHT), and astrophysicist Michael Johnson to discuss the one-year a...
One year of tropospheri clidar measurements of aerosol extinction and backscatter
lidar EARLINET aerosol
2015/9/16
The aerosol lidar system operational at IMAA-CNR in Tito Scalo (PZ) (Southern Italy, 40°36'N, 15°44'E, 820 m
above sea level) is part of the EARLINET project. Systematic lidar measurements of aerosol...
Some 30 years ago, astronomers found that regions of ionized gas around young high mass stars remain small (under a third of a light-year) for ten times longer than they should if they were to expand ...
Citations to Australian Astronomy: 5 and 10 Year Benchmarks
sociology of astronomy publications bibliography astronomical databases surveys
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 ...
WMAP 7 year constraints on CPT violation from large angle CMB anisotropies
CMBR theory CMBR experiments
2011/10/18
We constrain the rotation angle $\alpha$ of the linear polarization of CMB photons using the large angular scale (up to $\sim 4^\circ$) signal in WMAP 7 year data. At these scales, the CMB polarizatio...
Photometric SN Ia Candidates from the Three-Year SDSS-II SN Survey Data
Photometric Candidates Three-Year SDSS-II SN Survey Data
2011/10/21
We analyze the three-year SDSS-II Superernova (SN) Survey data and identify a sample of 1070 photometric SN Ia candidates based on their multi-band light curve data. This sample consists of SN candida...
The Supernova Legacy Survey 3-year sample: Type Ia Supernovae photometric distances and cosmological constraints
The Supernova Legacy Survey 3-year sample Type Ia Supernovae photometric distances
2011/1/10
We present photometric properties and distance measurements of 252 high redshift Type Ia supernovae (0.15 < z < 1.1) discovered during the first three years of the Supernova Legacy Survey (SNLS). Thes...
Fermi Gamma-ray Space Telescope: High-Energy Results from the First Year
Fermi Gamma-ray Space Telescope High-Energy Results
2010/11/9
The Fermi Gamma-ray Space Telescope (Fermi) was launched on June 11, 2008 and began its
first year sky survey on August 11, 2008. The Large Area Telescope (LAT), a wide field-ofview
pair-conversion ...
Constraints on the Polarization of the Anomalous Microwave Emission in the Perseus Molecular Complex from 7-year WMAP data
diffuse radiation radiation mechanisms general – radio continuum ISM
2010/11/11
We have used the seven year Wilkinson Microwave Anisotropy Probe (WMAP) data in order to update
the measurements of the intensity signal in the G159.6-18.5 region within the Perseus Molecular
Comple...
A 22-year Southern Sky Survey for Transient and Variable Radio Sources using the Molonglo Observatory Synthesis Telescope
radio continuum: general stars: pulsars:general stars: flare techniques:image processing catalogues supernovae general
2010/11/9
We describe a 22-year survey for variable and transient radio sources, performed with
archival images taken with the Molonglo Observatory Synthesis Telescope (MOST).
This survey covers 2775 deg2 of ...
Local Discontinuity Detection in the 7-Year WMAP CMB by Finite Differencing
Local Discontinuity Detection WMAP CMB
2010/11/12
An unexpected distribution of temperatures in the CosmicMicrowave Background (CMB) could be
a sign of new physics. In particular, the existence of cosmic defects could be indicated by temperature dis...
The Type Ib SN 1999dn: One Year of Photometric and Spectroscopic Monitoring
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/6
Extensive optical and near-infrared (NIR) observations of the type Ib supernova 1999dn are presented, covering the first year after explosion. These new data turn this object, already considered a pro...
HerMES team member Dimitra Rigopoulou, of Oxford University's Department of Physics and the Rutherford Appleton Laboratory, told me: 'It is a tremendous leap forward for understanding how galaxies for...
Fermi Telescope Caps its First Year with a Glimpse of Space-Time
Fermi Telescope First Year Space-Time
2009/11/4
During its first year of operations, NASA's Fermi Gamma Ray Space Telescope mapped the extreme sky with unprecedented resolution and sensitivity. It captured more than one thousand discrete sources of...
SOME FRESH INDICATIONS OF THE SOLAR ORIGIN OF 4-6-YEAR OSCILLATION OF THE EARTH'S ROTATION PARAMETERS
SOLAR ORIGIN EARTH'S ROTATION PARAMETERS 4-6-YEAR OSCILLATION
2009/3/19
The variations of universal times difference UT1-TAI and Earth’s
rotation instantaneous pˆole coordinates (X,Y) are studied in the frequency range
of 3 - 8 yr−1 as a function of the solar...