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 |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
aa10553.pdf | Pdf editoriale | 322.08 kB | Adobe PDF | View/Open |
0104376.pdf | arXiv | 358.19 kB | Adobe PDF | View/Open |
Page view(s)
32
checked on Mar 28, 2024
Download(s)
13
checked on Mar 28, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.