2011
DOI: 10.1016/j.newast.2010.11.005
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Abstract: Spicules are an important very dynamical and rather cool structure extending between the solar surface and the corona. They are partly filling the space inside the chromosphere and they are surrounded by a transition thin layer. New space observations taken with the SOT of the Hinode mission shed some light on their still mysterious formation and dynamics. Here we restrict the analysis to the most radial and the most interesting polar spicules situated at the base of the fast solar wind of coronal holes.We con… Show more

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Cited by 37 publications
(42 citation statements)
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“…This is enough to power the corona and solar wind in quiet regions and coronal holes, hence indicates that the granule-size emerging bipoles are the main engines that generate and sustain the entire heliosphere. The upward propagation of high-and low-frequency Alvfén waves along spicules detected from SOT's observations on Hinode was also reported by He et al (2009) and Tavabi et al (2011). He et al (2009) found in four cases that the spicules are modulated by highfrequency ( 0.02 Hz) transverse fluctuations.…”
Section: Introductionsupporting
confidence: 65%
See 1 more Smart Citation
“…This is enough to power the corona and solar wind in quiet regions and coronal holes, hence indicates that the granule-size emerging bipoles are the main engines that generate and sustain the entire heliosphere. The upward propagation of high-and low-frequency Alvfén waves along spicules detected from SOT's observations on Hinode was also reported by He et al (2009) and Tavabi et al (2011). He et al (2009) found in four cases that the spicules are modulated by highfrequency ( 0.02 Hz) transverse fluctuations.…”
Section: Introductionsupporting
confidence: 65%
“…We note also that Kudoh & Shibata (1999) presented a torsional Alfvén-wave model of spicules (actually the classical type I spicules) and discussed the possibility of wave coronal heating -they estimated that the energy flux transported into corona is of about 3 × 10 5 erg s −1 cm −2 , i.e., roughly half of the flux carried by the Alfvén waves running on type II spicules (see Moore et al 2011). Tavabi et al (2011) performed a statistical analysis of the SOT/Hinode observations of solar spicules and their wavelike behaviour, and argued that there is a possible upward propagation of Alfvén waves inside a doublet spicule with a typical wave's period of 110 s.…”
Section: Introductionmentioning
confidence: 93%
“…Using these values we obtained a typical level of accuracy of about 70 percent, although in several cases, at crossing points, such accuracy could not be found. The average value for spicule length is about 5000 to 10,000 km and they have a wide range of widths (in close agreement with Tavabi et al [12]). …”
Section: Observations and Data Reductionsupporting
confidence: 88%
“…Several authors have listed the physical parameters of spicules [8][9][10][11][12] and others based on off-disk measurements of projected linear structures at a known true angle with respect to the solar local vertical [13,14].…”
Section: Introductionmentioning
confidence: 99%
“…This is enough to power the corona and solar wind in quiet regions and coronal holes, hence indicates that the granule-size emerging bipoles are the main engines that generate and sustain the entire heliosphere. The upward propagation of highand low-frequency Alfvén waves along spicules detected from SOT's observations on Hinode was also reported by He et al (He et al, 1999) and Tavabi et al (Tavabi et al, 2011). He et al found in four cases that the spicules are modulated by high-frequency ( 0.02 Hz) transverse fluctuations.…”
Section: Introductionsupporting
confidence: 69%