426 datasets found

Keywords: polarimetry

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  • Time evolution of Mrk501 emission during 2017-2020

    We study the broadband emission of Mrk 501 using multiwavelength observations from 2017 to 2020 performed with a multitude of instruments, involving, among others, MAGIC,...
  • Extragal. Radio Sources Faraday Rotation

    The rotation measures of 555 extragalactic radio sources are calculated as a result of a large number of new linear polarization measurements carried out by us at several...
  • Polarimetric Observations of BL Lac

    This paper continues publications that report the results of photoelectric polarization measurements of the blazar BL Lac. Earlier, we published observational data obtained over...
  • Circumstellar Disks of Ae/Be Herbig Stars

    The data of the photo-polarimetric activity of Ae/Be Herbig stars and the types of Ha profiles observed in their spectra was carried out using data from the literature. The...
  • Photopolarimetric activity of SV Cep

    The results of the eleven-years (1987-98) photopolarimetric patrol observations of Herbig Ae star SV Cep are presented. Only one deep brightness minimum of star were observed...
  • Photometry and polarimetry of Ae star VV Ser

    Results of long-term photometric and polarimetric observations of the classical Herbig Ae star VV Ser, performed at the Crimean Astrophysical Observatory as part of a program of...
  • Polarimetry in the Chamaeleon I Dark Cloud

    Position angles and magnitudes of linear polarization in the H band have been measured for 66 stars embedded in or behind the Chamaeleon I dark cloud. These data are used to...
  • Multifrequency polarimetry of 300 pulsars

    Polarimetric observations of 300 pulsars have been conducted with the 76-m Lovell telescope at Jodrell Bank at radio frequencies centred around 230, 400, 600, 920, 1400 and...
  • ATCA Intraday Variability Survey

    We present the results of an Australia Telescope Compact Array (ATCA) survey for intraday variability (IDV) of the total and polarized flux densities of 118 compact,...
  • Polarization of extragalactic sources

    We have observed a sample of 64 small-diameter sources towards the central -6<l<6, -2<b<2 of the Galaxy with the aim of studying the Faraday rotation measure near...
  • PKS 0405-385 flux-density monitoring

    The quasar PKS 0405-385 is one of three radio sources (the other two are PKS 1257-326 and J1819+385) which exhibit unusually strong and rapid interstellar scintillations at GHz...
  • Polarisation of flat-spectrum radio sources

    We have used the very large JVAS/CLASS 8.4GHz surveys of flat-spectrum radio sources to obtain a large, uniformly observed and calibrated, sample of radio source polarizations....
  • Aligned radio polarizations of quasars

    We have used the very large Jodrell Bank VLA Astrometric Survey/Cosmic Lens All-Sky Survey 8.4-GHz surveys of flat-spectrum radio sources to test the hypothesis that there is a...
  • MRCR-SUMSS Ultra-steep-spectrum (USS) sample

    This paper introduces a new program to find high-redshift radio galaxies in the Southern hemisphere through ultra-steep spectrum (USS) selection. We define a sample of 234 USS...
  • Bright Source Sample of AT20G Survey

    The Australia Telescope 20-GHz (AT20G) Survey is a blind survey of the whole southern sky at 20GHz (with follow-up observations at 4.8 and 8.6GHz) carried out with the Australia...
  • Characteristics of energetic pulsars

    In this paper we compare the characteristics of pulsars with a high spin-down energy loss rate (Edot) against those with a low Edot. We show that the differences in the total...
  • Radio polarization of WMAP point sources

    Observations were conducted using the VLA in D-configuration between 01.40 and 19.30 UT on 2008 August 1. Cone search capability for table J/MNRAS/401/1388/table2 (Flux...
  • Australia Telescope 20GHz Survey Catalog, AT20G

    The Australia Telescope 20GHz Survey (AT20G) is a blind radio survey carried out at 20GHz with the Australia Telescope Compact Array (ATCA) from 2004 to 2008, and covers the...
  • Optical polarization of OJ 287 in 2005-2009

    OJ287 is a BL Lac object at redshift z=0.306 that has shown double-peaked bursts at regular intervals of ~12yr during the last ~40yr. We analyse optical photopolarimetric...
  • Polarization towards open cluster NGC 6823

    We present multiwavelength linear polarimetric observations of 104 stars towards the region of young open cluster NGC 6823. The polarization towards NGC 6823 is dominated by...
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