Tracing the origin of solar macrospicules

Photo voltaic spicules are small-scale, beam-like, cold-plasma-ejected phenomena that represent an vital element of the chromosphere. Macrospicules are chromospheric spicules at a bigger spatial scale.

The examine of macrospicules will assist us perceive the driving mechanism of the spicules as a result of the triggering technique of macrospicules in statement is definitely resolved by trendy high-resolution solar statement tools.

Just lately, researchers from the Yunnan Observatories of the Chinese language Academy of Sciences and their collaborators from Yunnan College used the chromosphere high-resolution telescope from the New Vacuum Photo voltaic Telescope to review the detailed evolution technique of the bottom of the macrospicules.

The examine was revealed in The Astrophysical Journal Letters on Jan. 6.

The researchers discovered that earlier than the launch of every macrospicule, a compact vibrant patch (BP) was detected at its base the place a newly rising dipole contacts and cancel with the preexisting ambient area.

The spectral prognosis from the Interface Area Imaging Spectrograph at one in all BPs revealed signatures of reconnection on the decrease environment. They prompt that the macrospicules and associated BPs fashioned in a standard reconnection course of, through which the growing reconnection top between the rising dipole and the ambient area resulted within the noticed variations from BPs to macrospicules.

The researchers concluded that the formation mechanism of macrospicules needs to be the identical as spicules and coronal jets, i.e., solar jetting phenomena at completely different scales share the identical bodily mechanism in affiliation with magnetic reconnection.

This work supplied clear observational proof that the macrospicules originated from magnetic reconnection within the decrease solar environment, and supplied new clues for understanding the driving mechanism of spicules.