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Browsing by Author "Chatterjee, Piyali"

Browsing by Author "Chatterjee, Piyali"

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  • Applying the weighted horizontal magnetic gradient method to a simulated flaring active region 
    Korsos, M. B; Chatterjee, Piyali; Erdelyi, R (IOP Publishing, 2018-04-20)
    Here, we test the weighted horizontal magnetic gradient (WGM) as a flare precursor, introduced by Korsós et al., by applying it to a magnetohydrodynamic (MHD) simulation of solar-like flares. The preflare evolution of the ...
  • Changes in Photospheric Lorentz Force in Eruptive and Confined Solar Flares 
    Maity, Samriddhi Sankar; Sarkar, Ranadeep; Chatterjee, Piyali; Srivastava, Nandita (American Astronomical Society, 2024-02-10)
    Solar flares are known to leave imprints on the magnetic field in the photosphere, often manifested as an abrupt and permanent change in the downward-directed Lorentz force in localized areas inside the active region. Our ...
  • Modeling Repeatedly Flaring δ Sunspots 
    Chatterjee, Piyali; Hansteen, V; Carlsson, M (The American Physical Society, 2016-03)
    Active regions (ARs) appearing on the surface of the Sun are classified into α , β , γ , and δ by the rules of the Mount Wilson Observatory, California on the basis of their topological complexity. Amongst these, the δ ...
  • The pencil code, a modular MPI code for partial differential equations and particles: multipurpose and multiuser-maintained 
    The Pencil Code Collaboration; Brandenburg, Axel; Johansen, Anders; Bourdin, Philippe A; Dobler, Wolfgang; Lyra, Wladimi; Rheinhardt, Matthias; Bingert, Sven; Haugen, Nils Erland L; Mee, Antony; Gent, Frederick; Babkovskaia, Natalia; Yang, Chao-Chin; Heinemann, Tobias; Dintrans, Boris; Mitra, Dhrubaditya; Candelares, Simon; Warnecke, Jörn; Käpylä, Petri J; Li, Xiang-Yu; Krüger, Jonas; Aarnes, Jørgen R; Sarson, Graeme R; Oishi, Jeffrey S; Schober, Jennifer; Schreiber, Andreas; Chatterjee, Piyali; Käpylä, Maarit J; Plasson, Raphaël; Sandin, Christer; Karchniwy, Ewa; Rodrigues, Luiz Felippe S; Hubbard, Alexander; Guerrero, Gustavo; Snodin, Andrew; Losada, Illa R; Pekkilä, Johannes; Qian, Chengeng (2021-02-21)
    The Pencil Code is a highly modular physics-oriented simulation code that can be adapted to a wide range of applications. It is primarily designed to solve partial differential equations (PDEs) of compressible hydrodynamics ...
  • Polymeric jets throw light on the origin and nature of the forest of solar spicules 
    Dey, Sahel; Chatterjee, Piyali; Murthy, O. V. S. N; Korsos, Marianna B; Liu, Jiajia; Nelson, Christopher J; Erdelyi, Robertus (Nature Publishing Group, 2022-03)
    Spicules are plasma jets that are observed in the dynamic interface region between the visible solar surface and the hot corona. At any given time, it is estimated that about 3 million spicules are present on the Sun. We ...
  • The Solar Activity Monitor Network – SAMNet 
    Erdelyi, Robertus; Korsos, Marianna B; Huang, Xin; Yang, Yong; Pizzey, Danielle; Wrathmall, Steven A; Hughes, Ifan G; Dyer, Martin J; Dhillon, Vikram S; Belucz, Bernadett; Brajsa, Roman; Chatterjee, Piyali; Cheng, Xuewu; Deng, Yuanyong; Dominguez, Santiago Vargas; Joya, Raul; Gömöry, Peter; Gyenge, Norbert G; Hanslmeier, Arnold; Kucera, Ales; Kuridze, David; Li, Faquan; Liu, Zhong; Xu, Long; Mathioudakis, Mihalis; Matthews, Sarah; McAteer, James R.T; Pevtsov, Alexei A; Pötzi, Werner; Romano, Paolo; Shen, Jinhua; Temesvary, Janos; Tlatov, Andrey G; Triana, Charles; Utz, Dominik; Veronig, Astrid M; Wang, Yuming; Yan, Yihua; Zaqarashvili, Teimuraz; Zuccarello, Francesca (EDP Sciences, 2022-06)
    The Solar Activity Magnetic Monitor (SAMM) Network (SAMNet) is a future UK-led international network of ground-based solar telescope stations. SAMNet, at its full capacity, will continuously monitor the Sun’s intensity, ...
  • Strong nonlocality variations in a spherical mean-field dynamo 
    Brandenburg, Axel; Chatterjee, Piyali (WILEY-VCH Verlag GmbH & Co., 2018-02)
    To explain the large-scale magnetic field of the sun and other bodies, the mean-field dynamo theory is commonly applied, where one solves the averaged equations for the mean magnetic field. However, the standard approach ...
  • Testing Alfvén wave propagation in a “realistic” set-up of the solar atmosphere 
    Chatterjee, Piyali (Taylor & Francis, 2020-07)
    We present a radiative magneto-hydrodynamic simulation set-up using the pencil code to study the generation, propagation and dis- sipation of Alfvén waves in the solar atmosphere which includes a convective layer, ...

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