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Related papers: Magnetic properties of G-band bright points in a s…

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Magnetic elements are thought to be described by flux tube models, and are well reproduced by MHD simulations. However, these simulations are only partially constrained by observations. We observationally investigate the relationship…

Bright small-scale magnetic elements found mainly in intergranular lanes at the solar surface are named bright points (BPs). They show high contrasts in Fraunhofer G-band observations and are described by nearly vertical slender flux tubes…

Solar and Stellar Astrophysics · Physics 2017-02-15 T. L. Riethmüller , S. K. Solanki

We determine the number density and area contribution of small-scale inter-granular calcium-II bright G-band structures in images of the quiet Sun as tracers of kilo-Gauss magnetic flux-concentrations. In a 149" x 117" G-band image of the…

Solar and Stellar Astrophysics · Physics 2012-10-23 Burkart Bovelet , Eberhard Wiehr

G-band bright points are small-sized features characterized by high photometric contrast. Theoretical investigations indicate that these features have associated magnetic field strengths between 1-2 kG. Results from observations instead…

Solar and Stellar Astrophysics · Physics 2015-06-18 Serena Criscuoli , Han Uitenbroek

G-band bright points (GBPs) are regarded as good manifestations of magnetic flux concentrations. We aim to investigate the relationship between the dynamic properties of GBPs and their longitudinal magnetic field strengths. High spatial and…

Solar and Stellar Astrophysics · Physics 2016-04-27 Yunfei Yang , Qiang Li , Kaifan Ji , Song Feng , Hui Deng , Feng Wang , Jiaben Lin

We used the flux calibrated images through the Broad Band Filter Imager and Stokes Polarimeter data obtained with the Solar Optical Telescope onboard the Hinode spacecraft to study the properties of bright points in and around the sunspots.…

Solar and Stellar Astrophysics · Physics 2015-05-18 Debi Prasad Choudhary , Toshifumi Shimizu

We present a visual determination of the number of bright points (BPs) existing in the quiet Sun, which are structures though to trace intense kG magnetic concentrations. The measurement is based on a 0.1 arcsec angular resolution G-band…

Solar and Stellar Astrophysics · Physics 2015-03-16 J. Sanchez Almeida , J. A. Bonet , B. Viticchie , D. Del Moro

We have investigated properties of photospheric Bright Points (BPs) observed in an Active Region during its decay phase and in a quiet Sun region. We have analyzed two sets of photospheric observations taken with IBIS (Interferometric…

Solar and Stellar Astrophysics · Physics 2010-11-23 S. Criscuoli , D. Del Moro , F. Giorgi , P. Romano , F. Berrilli , I. Ermolli , B. Viticchié , F. Zuccarello

Magnetic elements on the quiet sun are buffeted by convective flows that cause lateral motions on timescales of minutes. The magnetic elements can be observed as bright points (BPs) in the G band at 4305 {\AA}. We present observations of…

Astrophysics · Physics 2009-11-07 P. Nisenson , A. A. van Ballegooijen , A. G. de Wijn , P. Sutterlin

Context. Bright points (BPs) are small-scale, magnetic features ubiquitous across the solar surface. Previously, we have observed and noted their properties for quiet Sun regions. Here, we determine the dynamic properties of BPs using…

Solar and Stellar Astrophysics · Physics 2014-07-02 Peter H. Keys , Mihalis Mathioudakis , David B. Jess , Duncan H. Mackay , Francis P. Keenan

Bright points (BPs) in the solar photosphere are radiative signatures of magnetic elements described by slender flux tubes located in the darker intergranular lanes. They contribute to the ultraviolet (UV) flux variations over the solar…

Solar and Stellar Astrophysics · Physics 2016-08-11 T. L. Riethmüller , S. K. Solanki , S. V. Berdyugina , M. Schüssler , V. Martínez Pillet , A. Feller , A. Gandorfer , J. Hirzberger

Context. Magnetic Bright Points (MBPs) are small-scale magnetic features in the solar photosphere. They may be a possible source of coronal heating by rapid footpoint motions that cause magnetohydrodynamical waves. The number and size…

Solar and Stellar Astrophysics · Physics 2014-11-20 D. Utz , A. Hanslmeier , C. Möstl , R. Muller , A. Veronig , H. Muthsam

Small scale magnetic fields can be observed on the Sun in G-band filtergrams as MBPs (magnetic bright points) or identified in spectro-polarimetric measurements due to enhanced signals of Stokes profiles. These magnetic fields and their…

Solar and Stellar Astrophysics · Physics 2015-06-15 D. Utz , J. Jurčák , A. Hanslmeier , R. Muller , A. Veronig , O. Kühner

G-band bright points (GBPs) are thought to be the foot-points of magnetic flux tubes. The aim of this paper is to investigate the relation between the diffusion regimes of GBPs and the associated longitudinal magnetic field strengths. Two…

Solar and Stellar Astrophysics · Physics 2017-03-15 Yang Yunfei , Ji Kaifai , Feng Song , Deng Hui , Wang Feng , Lin Jiaben

Small-scale magnetic fields can be observed on the Sun in high resolution G-band filtergrams as magnetic bright points (MBPs). We study Hinode/ Solar Optical Telescope (SOT) longitude and latitude scans of the quiet solar surface taken in…

Solar and Stellar Astrophysics · Physics 2012-12-07 D. Utz , A. Hanslmeier , A. Veronig , O. Kühner , R. Muller , J. Jurčák , B. Lemmerer

Bright points (BPs) are manifestations of small magnetic elements in the solar photosphere. Their brightness contrast not only gives insight into the thermal state of the photosphere (and chromosphere) in magnetic elements, but also plays…

High resolution G-band images of the interior of a supergranulation cell show ubiquitous Bright Points (some 0.3 BPs per Mm^2). They are located in intergranular lanes and often form chains of elongated blobs whose smallest dimension is at…

Astrophysics · Physics 2009-11-10 J. Sanchez Almeida , I. Marquez , J. A. Bonet , I. Dominguez Cerdena , R. Muller

Magnetic bright points are small-scale magnetic elements ubiquitous across the solar disk, with the prevailing theory suggesting that they form due to the process of convective collapse. Employing a unique full Stokes spectropolarimetric…

By use of the high-resolution spectral data and the broadband imaging obtained with the Goode Solar Telescope at the Big Bear Solar Observatory on 2013 June 6, the spectra of three typical photospheric bright points (PBPs) have been…

Solar and Stellar Astrophysics · Physics 2020-07-21 Q. Hao , C. Fang , M. D. Ding , Z. Li , W. Cao

Our aim is to determine the plasma properties of a coronal bright point and compare its magnetic topology extrapolated from magnetogram data with its appearance in X-ray images. We analyse spectroscopic data obtained with EIS/Hinode, Ca II…

Astrophysics · Physics 2008-10-07 D. Pérez-Suárez , R. C. Maclean , J. G. Doyle , M. S. Madjarska
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