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อภิธานศัพท์: อภิธานศัพท์ฟิสิกส์ (อวกาศ)
B

BARTEL'S ROTATION NUMBER

The serial number assigned to 27-day rotation periods of solar and geophysical parameters. Rotation 1 in this sequence was assigned arbitrarily by Bartel to begin in January 1833.

BRIGHT SURGE ON THE DISK (BSD)

A bright gaseous stream (SURGE) emanating from the CHROMOSPHERE.

BRIGHT SURGE ON THE LIMB (BSL)

A large gaseous stream (SURGE) that moves outward more than 0.15 solar radius above the LIMB.

BURST

A transient enhancement of the solar RADIO EMISSION, usually associated with an ACTIVE REGION or FLARE.