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Title: MICRO-SIGMOIDS AS PROGENITORS OF CORONAL JETS: IS ERUPTIVE ACTIVITY SELF-SIMILARLY MULTI-SCALED?

Abstract

Observations from the X-ray telescope (XRT) on Hinode are used to study the nature of X-ray-bright points, sources of coronal jets. Several jet events in the coronal holes are found to erupt from small-scale, S-shaped bright regions. This finding suggests that coronal micro-sigmoids may well be progenitors of coronal jets. Moreover, the presence of these structures may explain numerous observed characteristics of jets such as helical structures, apparent transverse motions, and shapes. Analogous to large-scale sigmoids giving rise to coronal mass ejections (CMEs), a promising future task would perhaps be to investigate whether solar eruptive activity, from coronal jets to CMEs, is self-similar in terms of properties and instability mechanisms.

Authors:
; ;  [1]
  1. John Hopkins University Applied Physics Laboratory, Laurel, MD (United States)
Publication Date:
OSTI Identifier:
21455089
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 718; Journal Issue: 2; Other Information: DOI: 10.1088/0004-637X/718/2/981; Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; MASS; POINT SOURCES; SOLAR ACTIVITY; SOLAR CORONA; SUN; TELESCOPES; X RADIATION; ATMOSPHERES; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; MAIN SEQUENCE STARS; RADIATION SOURCES; RADIATIONS; SOLAR ATMOSPHERE; STARS; STELLAR ACTIVITY; STELLAR ATMOSPHERES; STELLAR CORONAE

Citation Formats

Raouafi, N -E, Rust, D M, Bernasconi, P N, and Georgoulis, M. K., E-mail: Nour.Eddine.Raouafi@jhuapl.ed. MICRO-SIGMOIDS AS PROGENITORS OF CORONAL JETS: IS ERUPTIVE ACTIVITY SELF-SIMILARLY MULTI-SCALED?. United States: N. p., 2010. Web. doi:10.1088/0004-637X/718/2/981.
Raouafi, N -E, Rust, D M, Bernasconi, P N, & Georgoulis, M. K., E-mail: Nour.Eddine.Raouafi@jhuapl.ed. MICRO-SIGMOIDS AS PROGENITORS OF CORONAL JETS: IS ERUPTIVE ACTIVITY SELF-SIMILARLY MULTI-SCALED?. United States. https://doi.org/10.1088/0004-637X/718/2/981
Raouafi, N -E, Rust, D M, Bernasconi, P N, and Georgoulis, M. K., E-mail: Nour.Eddine.Raouafi@jhuapl.ed. 2010. "MICRO-SIGMOIDS AS PROGENITORS OF CORONAL JETS: IS ERUPTIVE ACTIVITY SELF-SIMILARLY MULTI-SCALED?". United States. https://doi.org/10.1088/0004-637X/718/2/981.
@article{osti_21455089,
title = {MICRO-SIGMOIDS AS PROGENITORS OF CORONAL JETS: IS ERUPTIVE ACTIVITY SELF-SIMILARLY MULTI-SCALED?},
author = {Raouafi, N -E and Rust, D M and Bernasconi, P N and Georgoulis, M. K., E-mail: Nour.Eddine.Raouafi@jhuapl.ed},
abstractNote = {Observations from the X-ray telescope (XRT) on Hinode are used to study the nature of X-ray-bright points, sources of coronal jets. Several jet events in the coronal holes are found to erupt from small-scale, S-shaped bright regions. This finding suggests that coronal micro-sigmoids may well be progenitors of coronal jets. Moreover, the presence of these structures may explain numerous observed characteristics of jets such as helical structures, apparent transverse motions, and shapes. Analogous to large-scale sigmoids giving rise to coronal mass ejections (CMEs), a promising future task would perhaps be to investigate whether solar eruptive activity, from coronal jets to CMEs, is self-similar in terms of properties and instability mechanisms.},
doi = {10.1088/0004-637X/718/2/981},
url = {https://www.osti.gov/biblio/21455089}, journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 718,
place = {United States},
year = {Sun Aug 01 00:00:00 EDT 2010},
month = {Sun Aug 01 00:00:00 EDT 2010}
}