English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

G156.2+5.7 is a large supernova remnant (SNR) first discovered in the ROSATX-ray survey but radio observations are rare because of its low surfacebrightness and large size. Radio continuum and polarization images of the SNRG156.2+5.7 at lambda 6 cm are presented for the first time to be discussed inthe context with available data to investigate its physical properties. Weobtained an integrated flux density for G156.2+5.7 of S6cm= 2.5+-0.5Jy. Thespectral index of the integrated emission is alpha=-0.48+-0.08 between lambda74 cm and 6 cm excluding compact radio sources. We also obtained a spectralindex map, which shows little variation between the shells and the central areaof the SNR. This is consistent with the constant integrated flux densityspectrum. Highly polarized radio emission has been detected from the SNR shell,but also from a central patch, which probably originates in the front part ofthe spherical SNR shell. We derived the distribution of rotation measure frompolarization data at 11 cm and 6 cm and found RM gradients of oppositedirection in the SNR shell. The SNR G156.2+5.7 is unusual by its exceptionallyhigh X-ray brightness and very low surface-brightness in the radio range. Themagnetic field is very well ordered along the shell periphery as expected for acompressed ambient magnetic field. A toroidal magnetic field component isindicated by the RM distribution. (abridged)

Polarization observations of SNR G156.2+5.7 at lambda 6cm