Faraday tomography of LoTSS-DR2 data

نویسندگان

چکیده

Observations of synchrotron emission at low radio frequencies reveal a labyrinth polarised Galactic structures. However, the explanation for wealth structures remains uncertain due to complex interactions between interstellar medium and magnetic field. A multi-tracer approach analysis large sky areas is needed. This paper aims use polarimetric images from LOFAR Two metre Sky Survey (LoTSS) produce biggest mosaic in northern (150 MHz) date. The area this covers allows detailed morphological statistical studies high-latitude outer Galaxy, including well-known Loop III region. We produced 3100 square degree Faraday tomographic cube using rotation measure synthesis tool. calculated moments spectra compared them with data sets higher (1.4 GHz) map derived extragalactic sources. dominated by connected III. Additionally, reveals an abundance other structures, mainly {narrow extended} depolarisation canals, which are found be ubiquitous. find correlation LoTSS first moment image. ratio two deviates simple model Burn slab (Burn 1966) along line sight, highlights high level complexity magnetoionic that can studied these frequencies.

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ژورنال

عنوان ژورنال: Astronomy and Astrophysics

سال: 2022

ISSN: ['0004-6361', '1432-0746']

DOI: https://doi.org/10.1051/0004-6361/202142244