Structure and dynamics of isolated internetwork Ca II H bright points observed by SUNRISE

S. Jafarzadeh; S. K. Solanki; A. Feller; A. Lagg; A. Pietarila; S. Danilovic; T. L. Riethmüller; V. Martínez Pillet

doi:10.1051/0004-6361/201220089

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Volume 549 (January 2013)

A&A, 549 (2013) A116

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Table 2

Summary of averaged properties of the Ca ii H BPs.

Parameter	Mean value^a	No. of BPs

Intensity	1.48 ± 0.3 ⟨ I_Ca ⟩	107
Horizontal velocity	2.2 ± 1.8 km s^-1	107
Diameter	0.2 ± 0.02 arcsec	107
Lifetime	673 ± 526 s	47
CP ^b	0.32 ± 0.21%	53
\|Bcos(γ)\|^b	142 ± 87 G	53

Notes. CP: Circular polarisation degree, described as in Sect. 2.2; |Bcos(γ)|: unsigned longitudinal component of magnetic field.

^(a)

The uncertainty estimates were calculated from the standard deviations of the parameters’ distributions. For formal errors see main text.

^(b)

From Sunrise/IMaX.

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