scholarly journals Re-analysis of Breakthrough Listen Observations of FRB 121102: Polarization Properties of Eight New Spectrally Narrow Bursts

2021 ◽  
Vol 5 (1) ◽  
pp. 17
Author(s):  
Jakob T. Faber ◽  
Vishal Gajjar ◽  
Andrew P. V. Siemion ◽  
Steve Croft ◽  
Daniel Czech ◽  
...  
Keyword(s):  
Faraday Rotation ◽  
Linear Polarization ◽  
High Frequency ◽  
Search Techniques ◽  
Green Bank Telescope

Abstract We report polarization properties for eight narrowband bursts from FRB 121102 that have been re-detected in a high-frequency (4–8 GHz) Breakthrough Listen observation with the Green Bank Telescope, originally taken on 2017 August 26. The bursts were found to exhibit nearly 100% linear polarization, Faraday rotation measures bordering 9.3 × 104 rad m−2, and stable polarization position angles, all of which agree with burst properties previously reported for FRB 121102 at the same epoch. We confirm that these detections are indeed physical bursts with limited spectral occupancies and further support the use of sub-banded search techniques in FRB detection.

scholarly journals The Radio Polarization of BL Lacertae: Shocks in a Jet

1984 ◽  
Vol 110 ◽  
pp. 119-120 ◽  
Author(s):  
Hugh D. Aller ◽  
Margo F. Aller
Keyword(s):  
Axial Compression ◽  
Faraday Rotation ◽  
Linear Polarization ◽  
Radio Bursts ◽  
Bl Lacertae

The behavior of the linear polarization of BL Lacertae during the recent series of radio bursts indicates the presence of Faraday rotation in the vicinity of the source and the formation of an axial compression in the radio jet.

High frequency Faraday rotation in FR-5 glass

1987 ◽  
Vol 26 (9) ◽  
pp. 1581 ◽  
Author(s):  
Michael A. Butler ◽  
Eugene L. Venturini
Keyword(s):  
Faraday Rotation ◽  
High Frequency

Distortion of a model atom in intense, high-frequency laser field of linear polarization

1990 ◽  
Vol 149 (2-3) ◽  
pp. 144-150 ◽  
Author(s):  
T.P. Grozdanov ◽  
P.S. Krstic ◽  
M.H. Mittleman
Keyword(s):  
Linear Polarization ◽  
High Frequency ◽  
Laser Field ◽  
Frequency Laser ◽  
Model Atom

scholarly journals Observations of the Linear Polarization of Radio Sources at 6 cm Wavelength

1968 ◽  
Vol 21 (4) ◽  
pp. 493 ◽  
Author(s):  
D Morris ◽  
JB Whiteoak
Keyword(s):  
Linear Polarization ◽  
High Frequency ◽  
Wavelength Dependence ◽  
Radio Galaxies ◽  
Short Wave ◽  
Radio Sources ◽  
Polarization Data ◽  
Stellar Objects ◽  
Quasi Stellar Objects

The polarizations of 45 sources have been measured at 6 cm wavelength and have been compared with values obtained at longer wavelengths. The resulting wavelength dependence has been studied in relation to the spectra of the sources. For the quasi. stellar objects in particular, polarization features at short wave� lengths are associated with the young components of the source which radiate at high frequency. However, it is not possible to distinguish between radio galaxies and quasi-stellar objects solely on the basis of polarization data.

scholarly journals A new look at the galactic magnetic field

1979 ◽  
Vol 84 ◽  
pp. 317-319
Author(s):  
P. P. Kronberg ◽  
M. Simard-Normandin
Keyword(s):  
Magnetic Field ◽  
Faraday Rotation ◽  
Linear Polarization ◽  
Radio Sources ◽  
Galactic Magnetic Field ◽  
Equal Area ◽  
Large Sample ◽  
Extragalactic Radio Sources ◽  
First Order ◽  
New Look

We have measured the linear polarization of a new large sample of extragalactic radio sources, and by combining these with polarization values already in the literature, we have been able to compute a large number of rotation measures, with improved quality. We have also investigated the depolarization properties of these sources and as a result have been able to identify most sources with a large internally generated Faraday rotation. Figure 1 shows the rotation measures of 475 extragalactic radio sources on an equal-area projection, after “cleaning out” the extragalactic effects to first order.

scholarly journals High Frequency Observations of a Large Faraday Rotation Galaxy in a Cluster

1990 ◽  
Vol 140 ◽  
pp. 486-486
Author(s):  
M. Inoue ◽  
H. Tabara ◽  
T. Kato ◽  
K. Aizu
Keyword(s):  
Faraday Rotation ◽  
Hot Spots ◽  
High Frequency ◽  
Intracluster Medium ◽  
X Ray ◽  
Cooling Flow ◽  
Radio Jets ◽  
Rotation Measure ◽  
Dominant Member

We present 22 and 49 GHz interferometric observations of Hyd A (3C218). The source was found to have a very large Faraday rotation measure (RM) (Kato et al. 1987), and to be a dominant member of a luminous X-ray cluster with a large cooling flow (David et al. 1988). These characteristics are very similar to those of Cyg A which is suggested to produce a large RM within a dense sheath around the radio lobes as a result of somehow an interaction between dense intracluster medium (ICM) and radio jets and/or lobes (Dreher et al. 1987). Hyd A is the second example of Cyg A type source. In case of Cyg A, hot spots are the place where the interaction between jets and ICM occurs (Carilli et al. 1988). We then expect in Hyd A that similar interaction also occurs to form hot spots, and consequently that high frequency observations reveal structures of the interaction.

scholarly journals The Radio Lobes of Virgo A

1996 ◽  
Vol 175 ◽  
pp. 343-344
Author(s):  
H. Rottmann ◽  
K.-H. Mack ◽  
U. Klein ◽  
R. Wielebinski ◽  
N. Kassim ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Faraday Rotation ◽  
Linear Polarization ◽  
Dynamic Range ◽  
Low Frequency ◽  
Spectral Indices ◽  
Frequency Data ◽  
Polarization Effects ◽  
Instrumental Polarization

In the framework of our multi-frequency study of Virgo A we have performed observations of Vir A at 10.55 GHz with the Effelsberg 100-m telescope. Using our improved CLEAN procedure for single dish data we have increased the dynamic range to some 40 dB.By applying our newly developed polarization CLEANing technique we are able to diminish instrumental polarization effects. Since Faraday rotation is negligible at λ2.8 cm the measured linear polarization is a direct trace of the projected magnetic field in Vir A. In combination with low-frequency data obtained with the VLA it is possible to determine parameters like spectral indices, break frequencies, and spectral ages.

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