Articles written in Journal of Astrophysics and Astronomy
Volume 32 Issue 1-2 March 2011 pp 29-32 Part 1. Blazar Observations in Radio
Blazars from the first-three-months Fermi-AGN list were observed with the Urumqi 25-m radio telescope at 5 GHz in IDV (Intra-Day Variability) mode and inter-month observation mode. A significant correlation between the flux density at 5 GHz and the 𝛾-ray intensity for the Fermi-LAT detected blazars is seen. There is a higher IDV detection rate in Fermi detected blazars than those reported for other samples. Stronger variability appears at lower galactic latitudes; IDV appears to be stronger in weaker sources, indicating that the variability is affected by interstellar scintillation.
Volume 32 Issue 1-2 March 2011 pp 57-58 Part 1. Blazar Observations in Radio
A selected sample of intra-day variable AGN had been observed for 3–4 days per month at the Urumqi Observatory. The sample includes 7 target sources and 7 calibrators. The BL Lac object B0716+714 shows prominent intraday and long term variations.
Volume 32 Issue 1-2 March 2011 pp 337-338 Part 7. Other Topics
We monitored PSR B0329+54 for one year using the Nanshan 25-m radio telescope, the scintillation velocity VISS shows evidence of systematic variation with the day of the year. States of interstellar medium (ISM) are discussed.
Volume 35 Issue 3 September 2014 pp 289-291 Posters
We carried out a pilot 1.3-cm IDV observations of two dozens of AGNs at Urumqi from 23 to 25 November 2011. Six sources, namely J0136+4751, J0217+0144, J1058+0133, J1751+0939, J1833−2103 and DA193 were detected as IDV sources at a 99% confidence level (about 3𝜎 level). The weather was fine during the observation period, but the system noise after calibration remained which could be due to the data sampled are relatively sparse for each source in the observations.
Volume 40 | Issue 4
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