On the integrated continuum radio spectrum of supernova remnant W44 (G34.7-0.4): new insights from Planck

Abstract

In this paper, the integrated continuum radio spectrum of supernova remnant (SNR) W44 was analyzed up to 70 GHz, testing the different emission models that can be responsible for its particular shape. The observations by the Planck space telescope made possible to analyze the high frequency part of radio emission from SNRs. Although the quality of radio continuum spectrum (a high scatter of data points at same frequencies) prevents us to make definite conclusions, the possibility of spinning dust emission detection towards this remnant is emphasized. In addition, a concave-down feature, due to synchrotron losses, can not be definitely dismissed by the present knowledge of the integrated radio continuum spectrum of this SNR.

submitted to Serb. Astron. J.; minor revision

References in corpus (3)

• Dos and don'ts of reduced chi-squared
• A Case Against Spinning PAHs as the Source of the Anomalous Microwave Emission
• Studies of Anomalous Microwave Emission (AME) with the SKA

Cited by in corpus (4)

• QUIJOTE Scientific Results. II. Polarisation Measurements of the Microwave Emission in the Galactic molecular complexes W43 and W47 and supernova remnant W44
• Imaging of SNR IC443 and W44 with the Sardinia Radio Telescope at 1.5 GHz and 7 GHz
• Investigating the high-frequency spectral features of SNRs Tycho, W44 and IC443 with the Sardinia Radio Telescope
• A new look at the integrated radio/microwave continuum spectrum of Galactic supernova remnant IC443