Abstract
Magnetic bright points (MBPs) are located in intergranular channels on the solar surface. Studying the properties and evolution process of MBPs can help us to better understand solar activity and predict solar events that have a significant impact on Earth. In this study, we performed a statistical analysis of MBPs at different latitudes and longitudes. Data from the quiet-Sun (QS) in the eastward-equator (8 June 2021) and in the southern hemisphere (31 July 2020), as well as data from the QS near the disk center (30 July 2020), are analyzed. We studied the properties of MBPs, including lifetime, intensity contrast, and velocity. Moreover, we analyzed the intensity contrast of isolated MBPs at the moments of their birth and disappearance at different latitudes and longitudes, as well as the variation in the number of MBPs that appeared and disappeared in each frame. The results show that non-isolated MBPs have longer lifetimes than isolated MBPs, and the average lifetime of non-isolated MBPs located in the southern hemisphere (SH) is significantly shorter than that of MBPs near the disk center (DC) in the eastward-equator (EE). We find that the lifetime of non-isolated MBPs in the SH is negatively correlated with the intensity contrast, with higher intensity contrast associated with a shorter lifetime. The velocities of isolated MBPs at different latitudes and longitudes follow a Rayleigh distribution, while the velocities of non-isolated MBPs follow a log-normal distribution. Non-isolated MBPs exhibit higher horizontal velocities, with the maximum horizontal velocity reaching 8 km s−1. Finally, we find that the number of isolated MBPs per square Mm at different latitudes and longitudes remains stable during consecutive periods, and the intensity contrast of isolated MBPs is similar at the moment of their birth and disappearance.
Similar content being viewed by others
Data Availability
The data analyzed during the current study were derived from the following public domain resources Big Bear Solar Observatory http://www.bbso.njit.edu/~vayur/gst_logs/
Notes
References
Abramenko, V., Yurchyshyn, V., Goode, P., Kilcik, A.: 2010, Statistical distribution of size and lifetime of bright points observed with the New Solar Telescope. Astrophys. J. Lett. 725, L101. DOI.
Almeida, J.S., Márquez, I., Bonet, J., Cerdeña, I.D., Muller, R.: 2004, Bright points in the internetwork quiet Sun. Astrophys. J. 609, L91. DOI.
Andić, A., Goode, P., Chae, J., Cao, W., Ahn, K., Yurchyshyn, V., Abramenko, V.: 2010, Oscillatory behavior in the quiet Sun observed with the New Solar Telescope. Astrophys. J. Lett. 717, L79. DOI.
Andic, A., Chae, J., Ahn, K., Goode, P.R., Abramenko, V.: 2011, Response of granulation to small scale bright features in the quiet Sun. Astrophys. J. 731, 1451. DOI.
Bai, H., Yang, P., Zhao, L., Gong, X., Zhong, L., Yang, Y., Rao, C.: 2023, Hybrid detection algorithm and study on the quantity and brightness evolution characteristics of photospheric bright point groups. Astrophys. J. 956, 62. DOI.
Berger, T.E., et al.: 1996, On the dynamics of small-scale solar magnetic elements. Technical report, American Astronomical Society. DOI.
Berger, T.E., Löfdahl, M.G., Shine, R.A., Title, A.M.: 1998, Measurements of solar magnetic element dispersal. Astrophys. J. 506, 439. DOI.
Bovelet, B., Wiehr, E.: 2007, Multiple-scale pattern recognition applied to faint intergranular G-band structures. Solar Phys. 243, 121. DOI.
Choudhuri, A.R., Auffret, H., Priest, E.R.: 1993, Implications of rapid footpoint motions of photospheric flux tubes for coronal heating. Solar Phys. 143, 49. DOI.
Choudhuri, A.R., Dikpati, M., Banerjee, D.: 1993, Energy transport to the solar corona by magnetic kink waves. Astrophys. J. 413, 811. DOI. ADS.
Cranmer, S.R.: 2002, Coronal holes and the high-speed solar wind. Space Sci. Rev. 101, 229. https://api.semanticscholar.org/CorpusID:17954789.
Cranmer, S., Van Ballegooijen, A.: 2005, On the generation, propagation, and reflection of Alfvén waves from the solar photosphere to the distant heliosphere. Astrophys. J. Suppl. 156, 265. DOI.
Cranmer, S.R., Asgari-Targhi, M., Miralles, M.P., Raymond, J.C., Strachan, L., Tian, H., Woolsey, L.N.: 2015, The role of turbulence in coronal heating and solar wind expansion. Phil. Trans. Roy. Soc. London A 373, 20140148. DOI.
Crockett, P.J., Jess, D.B., Mathioudakis, M., Keenan, F.P.: 2009, Automated detection and tracking of solar magnetic bright points. Mon. Not. Roy. Astron. Soc. 397, 1852. DOI.
Crockett, P.J., Mathioudakis, M., Jess, D.B., Shelyag, S., Keenan, F.P., Christian, D.J.: 2010, The area distribution of solar magnetic bright points. Astrophys. J. Lett. 722, L188. DOI.
De Pontieu, B.: 2002, High-resolution observations of small-scale emerging flux in the photosphere. Astrophys. J. 569, 474. DOI.
De Wijn, A.G., Stenflo, J.O., Solanki, S.K., Tsuneta, S.: 2009, In: Thompson, M.J., Balogh, A., Culhane, J.L., Nordlund, Å., Solanki, S.K., Zahn, J.-P. (eds.) Small-Scale Solar Magnetic Fields, Springer, New York, 275. ISBN 978-1-4419-0239-9. DOI.
Feng, S., Ji, K.-F., Deng, H., Wang, F., Fu, X.-D.: 2012, Automatic detection and extraction algorithm of inter-granular bright points. J. Korean Astron. Soc. 45, 167. DOI.
Feng, S., Deng, L., Yang, Y., Ji, K.: 2013, Statistical study of photospheric bright points in an active region and quiet Sun. Astrophys. Space Sci. 348, 17. DOI.
Gao, Y., Li, F., Li, B., Cao, W., Song, Y., Tian, H., Guo, M.: 2021, Possible signature of sausage waves in photospheric bright points. Solar Phys. 296, 184. DOI.
Ishikawa, R., Tsuneta, S., Kitakoshi, Y., Katsukawa, Y., Bonet, J., Domínguez, S.V., van der Voort, L.R., Sakamoto, Y., Ebisuzaki, T.: 2007, Relationships between magnetic foot points and G-band bright structures. Astron. Astrophys. 472, 911. DOI.
Jess, D.B., Mathioudakis, M., Erdélyi, R., Crockett, P.J., Keenan, F.P., Christian, D.J.: 2009, Alfvén waves in the lower solar atmosphere. Science 323, 1582. DOI.
Keys, P.H., Mathioudakis, M., Jess, D.B., Shelyag, S., Crockett, P.J., Christian, D.J., Keenan, F.P.: 2011, The velocity distribution of solar photospheric magnetic bright points. Astrophys. J. Lett. 740, L40. DOI.
Klimchuk, J.A.: 2006, On solving the coronal heating problem. Solar Phys. 234, 41. DOI.
Lin, J., et al.: 2004, The role of magnetic reconnection in the observable features of solar eruptions. Astrophys. J. 602, 422. DOI.
Liu, Y.-X., Wu, N., Lin, J.: 2018, Manifestations of bright points observed in G-band and Ca II H by Hinode/SOT. Astron. Astrophys. 18, 125. DOI.
Liu, Y., Xiang, Y., Erdelyi, R., Liu, Z., Li, D., Ning, Z., Bi, Y., Wu, N., Lin, J.: 2018, Studies of isolated and non-isolated photospheric bright points in an active region observed by the new vacuum solar telescope. Astrophys. J. 856, 17. DOI.
Mackay, D.H., Yeates, A.R.: 2012, The Sun’s global photospheric and coronal magnetic fields: observations and models. Living Rev. Solar Phys. 9, 1. DOI.
Muller, R.: 1983, The dynamical behavior of facular points in the quiet photosphere. Solar Phys. 85, 113. DOI.
Muller, R., et al.: 1992, Formation of network bright points by granule compression. Solar Phys. 141, 27. DOI.
Peckover, R., Weiss, N.: 1978, On the dynamic interaction between magnetic fields and convection. Mon. Not. Roy. Astron. Soc. 182, 189. DOI.
Roddier, F.: 1981, V the Effects of Atmospheric Turbulence in Optical Astronomy, Progress in Optics 19, Elsevier, Amsterdam, 281. DOI.
Romano, P., Berrilli, F., Criscuoli, S., Del Moro, D., Ermolli, I., Giorgi, F., Viticchié, B., Zuccarello, F.: 2012, A comparative analysis of photospheric bright points in an active region and in the quiet Sun. Solar Phys. 280, 407. DOI.
Saavedra, G.B., Utz, D., Domínguez, S.V., Rozo, J.I.C., Manrique, S.J.G., Gömöry, P., Kuckein, C., Balthasar, H., Zelina, P.: 2022, Observational evidence for two-component distributions describing solar magnetic bright points. Astron. Astrophys. 657, A79. DOI.
Sanchez Almeida, J., Martínez González, M.J.: 2011, The magnetic fields of the quiet Sun. Scientific American-SCI AMER 215. DOI.
Schüssler, M., Shelyag, S., Berdyugina, S., Vögler, A., Solanki, S.K.: 2003, Why solar magnetic flux concentrations are bright in molecular bands. Astrophys. J. 597, L173. DOI.
Solanki, S.K.: 1993, Small-scale solar magnetic fields: an overview. Space Sci. Rev. 63, 1. DOI.
Spicer, D.S.: 1982, Magnetic energy storage and conversion in the solar atmosphere. Space Sci. Rev. 31, 351. DOI.
Stenflo, J.: 1985, Measurements of magnetic fields and the analysis of Stokes profiles. Solar Phys. 100, 189. DOI.
Tatarski, V.I., Silverman, R.A., Chako, N.: 1961, Wave propagation in a turbulent medium. Phys. Today 14, 46. DOI.
Tokovinin, A., Kornilov, V.: 2007, Accurate seeing measurements with MASS and DIMM. Mon. Not. Roy. Astron. Soc. 381, 1179. DOI.
Utz, D., Muller, R., Van Doorsselaere, T.: 2017, Temporal relations between magnetic bright points and the solar sunspot cycle. Publ. Astron. Soc. Japan 69, 98. DOI.
Utz, D., Hanslmeier, A., Möstl, C., Muller, R., Veronig, A., Muthsam, H.: 2009, The size distribution of magnetic bright points derived from Hinode/SOT observations. Astron. Astrophys. 498, 289. DOI.
Utz, D., Hanslmeier, A., Muller, R., Veronig, A., Rybák, J., Muthsam, H.: 2010, Dynamics of isolated magnetic bright points derived from Hinode/SOT G-band observations. Astron. Astrophys. 511, A39. DOI.
Utz, D., Hanslmeier, A., Veronig, A., Kühner, O., Muller, R., Jurčák, J., Lemmerer, B.: 2013, Variations of magnetic bright point properties with longitude and latitude as observed by Hinode/SOT G-band data. Solar Phys. 284, 363. DOI.
Utz, D., del Toro Iniesta, J., Rubio, L.B., Jurčák, J., Pillet, V.M., Solanki, S., Schmidt, W.: 2014, The formation and disintegration of magnetic bright points observed by Sunrise/IMaX. Astrophys. J. 796, 79. DOI.
Utz, D., Muller, R., Thonhofer, S., Veronig, A., Hanslmeier, A., Bodnárová, M., Bárta, M., del Toro Iniesta, J.: 2016, Long-term trends of magnetic bright points-I. Number of magnetic bright points at disc centre. Astron. Astrophys. 585, A39. DOI.
Van Ballegooijen, A., Asgari-Targhi, M., Berger, M.: 2014, On the relationship between photospheric footpoint motions and coronal heating in solar active regions. Astrophys. J. 787, 87. DOI.
Xiong, J., Yang, Y., Jin, C., Ji, K., Feng, S., Wang, F., Deng, H., Hu, Y.: 2017, The characteristics of thin magnetic flux tubes in the lower solar atmosphere observed by hinode/SOT in the G band and in Ca II H bright points. Astrophys. J. 851, 42. DOI.
Yang, Y.-F., Lin, J.-B., Feng, S., Ji, K.-F., Deng, H., Wang, F.: 2014, Evolution of isolated G-band bright points: size, intensity and velocity. Res. Astron. Astrophys. 14, 741. DOI.
Yang, Y., Li, Q., Ji, K., Feng, S., Deng, H., Wang, F., Lin, J.: 2016, On the relationship between G-band bright point dynamics and their magnetic field strengths. Solar Phys. 291, 1089. DOI.
Yang, Y., Li, X., Bai, X., Zhou, H., Liang, B., Zhang, X., Feng, S.: 2019, Morphological classification of G-band bright points based on deep learning. Astrophys. J. 887, 129. DOI.
Zhang, H., Bao, S., Kuzanyan, K.M.: 2002, Twist of magnetic fields in solar active regions. Astron. Rep. 46, 424. DOI.
Acknowledgments
We gratefully acknowledge the use of data from the Goode Solar Telescope (GST) of the Big Bear Solar Observatory (BBSO).
Funding
BBSO operation is supported by NJIT and US NSF AGS-1821294 grant. GST operation is partly supported by the Korea Astronomy and Space Science Institute and the Seoul National University. This work was partially supported by the “Thousand Talent Plans for Young Top-notch Talents of Yunnan Province” (41971392), as well as the Postgraduate Research and Innovation Fund of Yunnan Normal University (YJSJJ23-B111).
Author information
Authors and Affiliations
Contributions
This article was written by LiMin Zhao, who independently conducted the data analysis and wrote the manuscript. HaiCheng Bai, Peng Yang, and XiaoYing Gong proofread all drafts. HaiCheng Bai provided initial guidance on the paper, and XiaoYing Gong objectively reviewed and verified the manuscript. Peng Yang provided support in the experimental design aspect. Meng Sang provided technical consultation support for challenging aspects of the experiment. Yukuan Zhang provided constructive suggestions for the design of experimental figures and charts. Yang Yang made overall contributions in guiding the research work, including the thinking process, topic selection, design, and analysis. Yang Yang also provided important guidance in solving difficult or complex problems in the manuscript. Furthermore, XiaoYing Gong, HaiCheng Bai, and Peng Yang went through the entire review process, confirming the scientific integrity of the paper. They conduct comprehensive reviews and verifications for the final publication. All authors contributed to the further revisions of this paper, providing constructive comments and suggestions to ensure accurate expression of the complex research results.
Corresponding author
Ethics declarations
Competing interests
The authors declare no competing interests.
Additional information
Publisher’s Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Zhao, L., Yang, P., Bai, H. et al. Statistical Properties of Magnetic Bright Points at Different Latitudes and Longitudes of the Sun. Sol Phys 299, 1 (2024). https://doi.org/10.1007/s11207-023-02242-2
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s11207-023-02242-2