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High-resolution spectral imaging of SNR W44 and IC443 at 22 GHz with the Sardinia Radio Telescope

Published online by Cambridge University Press:  17 October 2017

S. Loru ,
A. Pellizzoni ,
E. Egron ,
N. Iacolina ,
S. Righini ,
M. Marongiu ,
S. Mulas ,
G. Murtas ,
D. Simeone  and
M. Pilia
...Show all authors
S. Loru
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza, 5 - 09047 Selargius (CA), Italy email: saraloru@oa-cagliari.inaf.it Dipartimento di Fisica-Università di Cagliari, S.P. Monserrato-Sestu Km 0,700 I-09042 Monserrato (CA), Italy
A. Pellizzoni
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza, 5 - 09047 Selargius (CA), Italy email: saraloru@oa-cagliari.inaf.it
E. Egron
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza, 5 - 09047 Selargius (CA), Italy email: saraloru@oa-cagliari.inaf.it
N. Iacolina
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza, 5 - 09047 Selargius (CA), Italy email: saraloru@oa-cagliari.inaf.it
S. Righini
Affiliation:
INAF- Istituto di Radioastronomia, Via P. Gobetti, 101 40129 Bologna, Italy
M. Marongiu
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza, 5 - 09047 Selargius (CA), Italy email: saraloru@oa-cagliari.inaf.it
S. Mulas
Affiliation:
Dipartimento di Fisica-Università di Cagliari, S.P. Monserrato-Sestu Km 0,700 I-09042 Monserrato (CA), Italy
G. Murtas
Affiliation:
Dipartimento di Fisica-Università di Cagliari, S.P. Monserrato-Sestu Km 0,700 I-09042 Monserrato (CA), Italy
D. Simeone
Affiliation:
Dipartimento di Fisica-Università di Cagliari, S.P. Monserrato-Sestu Km 0,700 I-09042 Monserrato (CA), Italy
M. Pilia
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza, 5 - 09047 Selargius (CA), Italy email: saraloru@oa-cagliari.inaf.it
M. Bachetti
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza, 5 - 09047 Selargius (CA), Italy email: saraloru@oa-cagliari.inaf.it
A. Trois
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza, 5 - 09047 Selargius (CA), Italy email: saraloru@oa-cagliari.inaf.it
R. Ricci
Affiliation:
INAF- Istituto di Radioastronomia, Via P. Gobetti, 101 40129 Bologna, Italy
A. Melis
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza, 5 - 09047 Selargius (CA), Italy email: saraloru@oa-cagliari.inaf.it
R. Concu
Affiliation:
INAF-Osservatorio Astronomico di Cagliari, Via della Scienza, 5 - 09047 Selargius (CA), Italy email: saraloru@oa-cagliari.inaf.it
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Abstract

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In the framework of the Astronomical Validation and Early Science activities of the Sardinia Radio Telescope (SRT, www.srt.inaf.it), we performed 22 GHz imaging observations of SNR W44 and IC443. Thanks to the single-dish imaging performances of SRT and innovative ad hoc imaging techniques, we obtained maps that provide a detailed view of the structure of the remnants. We are planning to exploit the high-frequency radio data of SNRs to better characterize the spatially-resolved spectra and search for possible spectral steepening or breaks in selected SNR regions, assessing the high-energy tail of the region-dependent electron distribution.

Keywords

(ISM:) supernova remnantsISM: individual (IC443, W44)ISM: radio continuum
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S331: Supernova 1987A:30 years later - Cosmic Rays and Nuclei from Supernovae and their aftermaths , February 2017 , pp. 190 - 193
Copyright
Copyright © International Astronomical Union 2017 

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