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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/33058
Title: The radio corona of AR Lacertae
Authors: TRIGILIO, CORRADO 
BUEMI, CARLA SIMONA 
UMANA, Grazia Maria Gloria 
Rodonò, M.
LETO, PAOLO 
Beasley, A. J.
PAGANO, Isabella 
Issue Date: 2001
Journal: ASTRONOMY & ASTROPHYSICS 
Number: 373
Issue: 1
First Page: 181
Abstract: We present multifrequency VLA and VLBA observations at 8.4 GHz of the RS CVn system {AR Lac}, that were performed in autumn 1997 simultaneously with X-ray observations obtained from Rodonòet al. (\cite{Rodono}). Our VLBA data indicate a resolved source with dimension close to the system separation, while the study of the flux density curve reveals a small amplitude outside of the eclipse variability. The derived five-frequencies spectra, combined with the size information from VLBA data, are compared with gyrosynchrotron emission from a two component structured source. A comparison with the results of the X-ray observations allow us to exclude the possibility that a thermal gyrosynchrotron is responsible for the radio emission, but it is compatible with the hypothesis of co-spatial X-ray and radio emitting sources.
URI: http://hdl.handle.net/20.500.12386/33058
URL: https://www.aanda.org/articles/aa/abs/2001/25/aa10553/aa10553.html
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20010566
Bibcode ADS: 2001A&A...373..181T
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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