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High-resolution imaging of SNR IC443 and W44 with the Sardinia Radio Telescope

Published online by Cambridge University Press:  17 October 2017

E. Egron
Affiliation:
INAF, Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047 Selargius, Italy email: egron@oa-cagliari.inaf.it
A. Pellizzoni
Affiliation:
INAF, Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047 Selargius, Italy email: egron@oa-cagliari.inaf.it
M. N. Iacolina
Affiliation:
INAF, Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047 Selargius, Italy email: egron@oa-cagliari.inaf.it
S. Loru
Affiliation:
INAF, Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047 Selargius, Italy email: egron@oa-cagliari.inaf.it Dip. di Fisica, Università degli Studi di Cagliari, SP Monserrato-Sestu, KM 0.7, 09042 Monserrato, Italy
M. Marongiu
Affiliation:
INAF, Osservatorio Astronomico di Cagliari, Via della Scienza 5, 09047 Selargius, Italy email: egron@oa-cagliari.inaf.it
S. Righini
Affiliation:
INAF, Istituto di Radio Astronomia di Bologna, Via P. Gobetti 101, 40129 Bologna, Italy
M. Cardillo
Affiliation:
INAF, Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125 Firenze, Italy
A. Giuliani
Affiliation:
INAF, Istituto di Astrofisica Spaziale e Fisica cosmica di Milano, via E. Bassini 15, 20133 Milano, Italy
S. Mulas
Affiliation:
Dip. di Fisica, Università degli Studi di Cagliari, SP Monserrato-Sestu, KM 0.7, 09042 Monserrato, Italy
G. Murtas
Affiliation:
Dip. di Fisica, Università degli Studi di Cagliari, SP Monserrato-Sestu, KM 0.7, 09042 Monserrato, Italy
D. Simeone
Affiliation:
Dip. di Fisica, Università degli Studi di Cagliari, SP Monserrato-Sestu, KM 0.7, 09042 Monserrato, Italy
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Abstract

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We present single-dish imaging of the well-known Supernova Remnants (SNRs) IC443 and W44 at 1.5 GHz and 7 GHz with the recently commissioned 64-m diameter Sardinia Radio Telescope (SRT). Our images were obtained through on-the-fly mapping techniques, providing antenna beam oversampling, automatic baseline subtraction and radio-frequency interference removal. It results in high-quality maps of the SNRs at 7 GHz, which are usually lacking and not easily achievable through interferometry at this frequency due to the very large SNR structures. SRT continuum maps of our targets are consistent with VLA maps carried out at lower frequencies (at 324 MHz and 1.4 GHz), providing a view of the complex filamentary morphology. New estimates of the total flux density are given within 3% and 5% error at 1.5 GHz and 7 GHz respectively, in addition to flux measurements in different regions of the SNRs.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2017 

References

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High-resolution imaging of SNR IC443 and W44 with the Sardinia Radio Telescope
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High-resolution imaging of SNR IC443 and W44 with the Sardinia Radio Telescope
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