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We present observational evidence of apparent plasma rotational motions in the feet of a solar prominence. Our study is based on spectroscopic observations taken in the He I 1083.0 nm multiplet with the Tenerife Infrared Polarimeter…

Solar and Stellar Astrophysics · Physics 2015-06-12 D. Orozco Suárez , A. Asensio Ramos , J. Trujillo Bueno

Our aim is to test potential solar prominence plasma diagnostics as obtained with the new solar capability of the Atacama Large Millimeter / submillimeter Array (ALMA). We investigate the thermal and plasma diagnostic potential of ALMA for…

Solar and Stellar Astrophysics · Physics 2017-09-13 Andrew S Rodger , Nicolas Labrosse

We report on a search for short-period intensity variations in the green-line FeXIV 530.3 nm emission from the solar corona during the 21 August 2017 total eclipse viewed from Idaho in the United States. Our experiment was performed with a…

Solar and Stellar Astrophysics · Physics 2019-05-01 P. Rudawy , K. Radziszewski , A. Berlicki , K. J. H. Phillips , D. B. Jess , P. H. Keys , F. P. Keenan

Observations of stellar prominences on young rapidly rotating stars provide unique probes of their magnetic fields out to many stellar radii. We compare two independently obtained datasets of the K3 dwarf Speedy Mic using the…

Astrophysics · Physics 2009-11-11 N. J. Dunstone , A. Collier Cameron , J. R. Barnes , M. Jardine

There are currently no three dimensional numerical models which describe the magnetic and energetic formation of prominences self-consistently. Consequently, there has not been significant progress made in understanding the connection…

Solar and Stellar Astrophysics · Physics 2015-06-17 Donald Schmit , Sarah Gibson

The Prominence-Corona Transition Region (PCTR) plays a key role in the thermal and pressure equilibrium of solar prominences. Our knowledge of this interface is limited and several major issues remain open, including the thermal structure…

Solar and Stellar Astrophysics · Physics 2015-06-05 Susanna Parenti , Brigitte Schmieder , Petr Heinzel , Leon Golub

The Coronal Multi-channel Polarimeter (CoMP) obtains daily full-Sun above-the-limb coronal observations in linear polarization, allowing for the first time a diagnostic of the coronal magnetic field direction in quiescent prominence…

Solar and Stellar Astrophysics · Physics 2015-06-15 U. Bak-Steslicka , S. E. Gibson , Y. Fan , C. Bethge , B. Forland , L. A. Rachmeler

We present first prominence observations obtained with ALMA in Band 3 at the wavelength of 3 mm. High-resolution observations have been coaligned with the MSDP H$\alpha$ data from Wroclaw-Bialk\'{o}w large coronagraph at similar spatial…

The dynamics of prominence fine structures is a challenge to understand the formation of cool plasma prominence embedded in the hot corona. Recent observations from the high resolution Hinode/SOT telescope allow us to compute velocities…

Solar and Stellar Astrophysics · Physics 2015-05-14 B. Schmieder , R. Chandra , A. Berlicki , P. Mein

We analyze flare-associated transverse oscillations in a quiescent solar prominence on 8-9 September, 2010. Both the flaring active region and the prominence were located near the West limb, with a favorable configuration and viewing angle.…

Solar and Stellar Astrophysics · Physics 2015-06-11 Sanjay Gosain , Claire Foullon

We present synthetic spectra corresponding to a 2.5D magnetohydrodynamical simulation of a rotating prominence in the Ca II 8542 \r{A}, H$\alpha$, Ca II K, Mg II k, Ly $\alpha$, and Ly $\beta$ lines. The prominence rotation resulted from…

Solar and Stellar Astrophysics · Physics 2024-10-07 A. G. M. Pietrow , V. Liakh , C. M. J. Osborne , J. Jenkins , R. Keppens

We have compared the star-formation properties of the W49A and W51 regions by using far-infrared data from the Herschel infrared Galactic Plane Survey (Hi-GAL) and 850-um observations from the James Clerk Maxwell Telescope (JCMT) to obtain…

Solar and Stellar Astrophysics · Physics 2018-03-21 D. J. Eden , T. J. T. Moore , J. S. Urquhart , D. Elia , R. Plume , C. Konig , A. Baldeschi , E. Schisano , A. J. Rigby , L. K. Morgan , M. A. Thompson

The nature of flows in tornado-prominences is an open issue. While the AIA imager aboard the Solar Dynamics Observatory (SDO) allowed us to follow the global structure of a tornado-like prominence during five hours, the Interface Region…

Solar and Stellar Astrophysics · Physics 2021-09-15 Krzysztof Barczynski , Brigitte Schmieder , Aaron W. Peat , Nicolas Labrosse , Pierre Mein , Nicole Mein

A close association between eruptive prominences and CMEs, both slow and fast CMEs, was reported in many studies. Sometimes it is possible to follow the material motion starting from the prominence (filament) activation to the CME in the…

Astrophysics · Physics 2015-05-13 Boris Filippov , Serge Koutchmy

The total solar eclipse of August 21st, 2017 was observed with a Digital Single Lens Reflex (DSLR) camera equipped with a linear polarizing filter. A method was developed to combine images acquired with 15 different exposure times (from…

Solar and Stellar Astrophysics · Physics 2020-12-09 Alessandro Bemporad

Solar prominences, intricate structures on the Sun's limb, have been a subject of fascination due to their thread-like features and dynamic behaviors. Utilizing data from the New Vacuum Solar Telescope (NVST), Chinese H_alpha Solar Explorer…

Solar and Stellar Astrophysics · Physics 2024-04-05 Jincheng Wang , Dong Li , Chuan Li , Yijun Hou , Zhike Xue , Zhe Xu , Liheng Yang , Qiaoling Li

This work deals with the study of an erupting prominence embedded in the core of a CME and focuses on the derivation of the prominence plasma filling factor. We explore two methods to measure the prominence plasma filling factor that are…

Solar and Stellar Astrophysics · Physics 2018-09-19 R. Susino , A. Bemporad , S. Jejčič , P. Heinzel

The spectroscopic observations presented here were acquired during the 2017 August 21 total solar eclipse with a three-channel partially multiplexed imaging spectrometer (3PAMIS) operating at extremely high orders ($>$ 50). The 4 $R_\odot$…

Solar and Stellar Astrophysics · Physics 2024-03-18 Yingjie Zhu , Shadia R. Habbal , Adalbert Ding , Bryan Yamashiro , Enrico Landi , Benjamin Boe , Sage Constantinou , Michael Nassir

We present an X-ray imaging and spectroscopic study of a partially occulted C7.7 flare on 2003 April 24 observed by RHESSI that accompanied a prominence eruption observed by TRACE. (1) The activation and rise of the prominence occurs during…

Solar and Stellar Astrophysics · Physics 2011-02-11 Wei Liu , Tong-Jiang Wang , Brian R. Dennis , Gordon D. Holman

Some 8000 images obtained with the SECIS fast-frame CCD camera instrument located at Lusaka, Zambia, during the total eclipse of 21 June 2001 have been analyzed to search for short-period oscillations in intensity that could be a signature…

Solar and Stellar Astrophysics · Physics 2015-05-20 P. Rudawy , K. J. H. Phillips , A. Buczylko , D. R. Williams , F. P. Keenan