Cancelation of small-scale magnetic features | Astronomy & Astrophysics (A&A)

Home

All issues

Volume 622 (February 2019)

A&A, 622 (2019) A200

Full HTML

Free Access

Table 1.

Properties of Class I pairs.

ROI	Peak flux	B_LOS, max	γ_LOS^a	V_LOS, max	Area_max	Cancelation time^b	Flux decay rate	T^c	SuFI^d
	(10¹⁶ Mx)	(G)	(deg)	(km s⁻¹)	(arcsec²)	(min)	(10¹⁴ Mx s⁻¹)	(K)
2^e	4.3	153	44	−0.66	0.1	1.2	−4.0	230	No
4	−12.2	200	72	1.5	0.23	3.0	−4.7	60	Yes
5	13.9	290	65	2.56	0.18	3.6	−5.0	70	No
6	12.2	190	69	1.4	0.27	3.6	−4.0	110	Yes
7	5.3	210	67	2.0	0.08	1.8	−4.0	80	Yes
8	15.4	215	67	1.5	0.39	6.7	−2.4	80	Yes

Notes. Properties of only the smaller features that disappear during cancelation are given.

^(a)

For a negative polarity patch γ_LOS = 180 − γ_LOS.

^(b)

Cancelation time is calculated as the difference between the time when the smaller feature reaches its peak flux and the time when it is last detected.

^(c)

Enhanced temperature value along the PIL at log τ = −2.5.

^(d)

Indicates whether the pair is covered by the SuFI FOV.

^(e)

Two pairs are identified in ROI 2; one belongs to Class I and the other belongs to Class II.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.