Observing Flare Stars Below 100 MHz with the LWA

التفاصيل البيبلوغرافية
العنوان: Observing Flare Stars Below 100 MHz with the LWA
المؤلفون: Davis, Ivey, Taylor, Greg, Dowell, Jayce
المصدر: Mon.Not.Roy.Astron.Soc. 494 (2020) 4848-4853
سنة النشر: 2020
المجموعة: Astrophysics
مصطلحات موضوعية: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
الوصف: 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.
Comment: 7 pages, 6 figures
نوع الوثيقة: Working Paper
DOI: 10.1093/mnras/staa988
URL الوصول: http://arxiv.org/abs/2006.02469
رقم الأكسشن: edsarx.2006.02469
قاعدة البيانات: arXiv