搜索结果: 1-12 共查到“天文学 GMRT”相关记录12条 . 查询时间(0.046 秒)
We present the first set of polarimetric images made with the GMRT. These were obtained as part of the program to commission the polarization mode at the telescope. We find that the instrumental polar...
GMRT observation towards detecting the Post-reionization 21-cm signal
GMRT the Post-reionization 21-cm signal
2011/1/10
We have analyzed 610 MHz GMRT observations towards detecting the redshifted 21-cm signal from z=1.32. The multi-frequency angular power spectrum C_l(Delta nu) is used to characterize the statistical p...
Tracking the Shadows through GMRT
Gravitational lens molecular absorption lines quasar B0218 C 357
2009/5/19
The structures of faint high redshift galaxies cannot be observed
directly. But if a luminous quasar is located farther along their line of
sight, high resolution absorption lines offer a valuable a...
HI Fluctuations at Large Redshifts: III – Simulating the Signal Expected at GMRT
Cosmology large scale structures radiation
2009/5/19
We simulate the distribution of neutral hydrogen (HI) at
the redshifts z D 1:3 and 3:4 using a cosmological N-body simulation
along with a prescription for assigning HI masses to the particles. The...
GMRT Detection of HI 21cm Associated Absorption towards the z D 1:2 Red Quasar 3C 190
active quasars absorption line galaxies quasars
2009/5/18
We report the GMRT detection of associated HI 21 cm-line
absorption in the z D 1:1946 red quasar 3C 190. Most of the absorption
is blue-shifted with respect to the systemic redshift. The absorption...
Associated HI Absorption in the z = 3.4 Radio Galaxy B2 0902+343 Observed with the GMRT
absorption lines radio lines galaxies radio galaxies individual (0902 C 343)
2009/5/14
We have made observations of the associated HI absorption of a
high redshift radio galaxy 0902C34 at z D 3:395 with the Giant Meterwave
Radio Telescope in the 3231MHz band.We find a narrowabsorptio...
Associated HI Absorption in the z = 3.4 Radio Galaxy B2 0902+343 Observed with the GMRT
active radio lines galaxies radio galaxies
2009/5/14
We have made observations of the associated HI absorption of a
high redshift radio galaxy 0902C34 at z D 3:395 with the Giant Meterwave
Radio Telescope in the 3231MHz band.We find a narrowabsorptio...
A High Galactic Latitude HI 21cm-line Absorption Survey using the GMRT：II. Results and Interpretation
clouds kinematics and dynamics radio lines
2009/5/14
We have carried out a sensitive high-latitude (|b| > 15◦)
HI 21 cm-line absorption survey towards 102 sources using the GMRT.
With a 3σ detection limit in optical depth of ∼0.01, this is...
A High Galactic Latitude HI 21cm-line Absorption Survey using the GMRT：I. Observations and Spectra
clouds kinematics and dynamics radio lines
2009/5/14
We have used the Giant Meterwave Radio Telescope (GMRT)
to measure the Galactic HI 21-cm line absorption towards 102 extragalactic
radio continuum sources, located at high (|b| > 15◦) Galactic...
GMRT and VLA Observations at 49 cm and 20 cm of the HII Region near l = 24.8º, b = 0.1º
Interstellar medium radio recombination lines HII regions envelopes
2009/5/12
We report multi-frequency radio continuum and hydrogen
radio recombination line observations of HII regions near l = 24.8◦,
b = 0.1◦ using the Giant Metrewave Radio Telescope(GMRT) at 1....
GMRT Detection of a New Wide-Angle Tail (WAT) Radio Source Associated with the Galaxy PGC 1519010
Radio galaxies cluster of galaxies ram pressure intracluster
2010/9/15
We report the serendipitous detection of a Wide-Angle Tail (WAT) radio galaxy at 240 and 610 MHz, using the Giant Metrewave Radio Telescope (GMRT). This WAT is hosted by a cD galaxy PGC 1519010 whose ...
GMRT and VLA Observations at 49 cm and 20 cm of the HII Region near l = 24.8º, b = 0.1º
Interstellar medium—radio recombination lines—HII regions—envelopes
2010/9/16
We report multi-frequency radio continuum and hydrogen radio recombination line observations of HII regions near l = 24.8◦,b = 0.1◦ using the Giant Metrewave Radio Telescope(GMRT) at 1.28 ...