@inproceedings{6be33e1a0ddb4072925178385cbf18e7,
title = "What determines the penumbral size and Evershed flow speed?",
abstract = "Using Hinode SP and G-band observations, we examined the relationship between magnetic field structure and penumbral length as well as Evershed flow speed. The latter two are positively correlated with magnetic inclination angle or horizontal field strength within 1.5 kilogauss, which is in agreement with recent magnetoconvective simulations of Evershed effect. This work thus provides direct observational evidence supporting the magnetoconvection nature of penumbral structure and Evershed flow in the presence of strong and inclined magnetic field.",
keywords = "Sun: atmospheric motions, Sun: magnetic fields, Sun: photosphere., Sunspots",
author = "Na Deng and Toshifumi Shimizu and Choudhary, {Debi Prasad} and Haimin Wang",
note = "Funding Information: N.D. and D.P.C. were supported by NASA grant NNX08AQ32G and NSF grant ATM 05-48260. N.D. thank valuable discussions with Drs. Ichimoto, Kitiashvili, Martinez Pillet, Sainz Dalda, and Schlichenmaier.",
year = "2011",
month = aug,
doi = "10.1017/S1743921311015274",
language = "English (US)",
isbn = "9780521760621",
series = "Proceedings of the International Astronomical Union",
publisher = "Cambridge University Press",
number = "S273",
pages = "216--220",
booktitle = "The Physics of Sun and Star Spots",
address = "United Kingdom",
edition = "S273",
}