Observing flare stars below 100 MHz with the LWA
| Autor: | Ivey Davis, G. B. Taylor, Jayce Dowell |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics 010504 meteorology & atmospheric sciences FOS: Physical sciences Astronomy and Astrophysics Astrophysics 01 natural sciences law.invention Long wavelength Interferometry Stars Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science law Brightness temperature 0103 physical sciences Astrophysics - High Energy Astrophysical Phenomena 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) 0105 earth and related environmental sciences Flare |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 494:4848-4853 |
| ISSN: | 1365-2966 0035-8711 |
| DOI: | 10.1093/mnras/staa988 |
| Popis: | We observed the flare stars AD Leonis, Wolf 424, EQ Pegasi, EV Lacertae, and UV Ceti for nearly 135 hours. These stars were observed between 63 and 83 MHz using the interferometry mode of the Long Wavelength Array. Given that emission from flare stars is typically circularly polarized, we used the condition that any significant detection present in Stokes I must also be present in Stokes V at the same time in order for us to consider it a possible flare. Following this, we made one marginal flare detection for the star EQ Pegasi. This flare had a flux density of 5.91 Jy in Stokes I and 5.13 Jy in Stokes V, corresponding to a brightness temperature $1.75 \times 10^{16}(r/r_*)^{-2}$ K. 7 pages, 6 figures |
| Databáze: | OpenAIRE |
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