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Browsing by Author "Mathur, Harsh"

Browsing by Author "Mathur, Harsh"

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  • Clustering analysis of Ca I 4227 line polarization using magnetohydrodynamic simulations of the solar atmosphere 
    Mathur, Harsh; Anusha, L. S; Agnihotri, Devang (American Astronomical Society, 2025-04-10)
    The Ca i 4227 Å line is a strong resonance line formed in the solar chromosphere. At the limb, it produces the largest scattering polarization signal. So far, modeling the linear polarization in this line has been limited ...
  • Design requirements of a spectropolarimeter for solar extreme-ultraviolet observations and characterization of a K-mirror based on Brewster's angle 
    Khan, Raveena; Radhika, Dharmadhikari; Mathur, Harsh; Nagaraju, K; Jain, Sinchana R; Phanindra, D. V. S; Sagayanathan, K (Optica Publishing Group, 2024-12-01)
    Measuring the linear polarization signal in extreme-ultraviolet (EUV) spectral lines, produced by the Hanle effect, offers a promising technique for studying magnetic fields in the solar corona. The required signal-to-noise ...
  • Do Hα Stokes V Profiles Probe the Chromospheric Magnetic Field? An Observational Perspective 
    Mathur, Harsh; Nagaraju, K; Joshi, Jayant; de la Cruz Rodriguez, Jaime (American Astronomical Society, 2023-03-20)
    We investigated the diagnostic potential of the Stokes V profile of the Hα line to probe the chromospheric line-ofsight (LOS) magnetic field (BLOS) by comparing the BLOS inferred from the weak field approximation (WFA) ...
  • An Image Auto Guider System for Kodaikanal Tower Tunnel Telescope 
    Mathur, Harsh; Thulasidharen, K. C; Hemanth, P; Nagaraju, K; Rajalingam, M (World Scientific Publishing, 2023-02)
    The Kodaikanal Tower Tunnel Telescope (KTT) is a three-mirror Coelostat-based Solar telescope. An inherent variable image drift is present in the KTT which is detrimental to observations particularly to slit-based spectroscopic ...
  • Measurements of seeing-induced crosstalk in tip–tilt corrected solar polarimetry 
    Mathur, Harsh; Nagaraju, K; Pruthvi, Hemanth; Sagayanathan, K (Optica Publishing Group, 2024-05-20)
    We present measurements of seeing-induced crosstalk using spectropolarimetric observations of sunspots recorded simultaneously in the H α and Ca II 8662 Å lines with the Kodaikanal Tower Tunnel (KTT) telescope. The Kodaikanal ...
  • Probing chromospheric magnetic field through multi-line spectropolarimetry 
    Mathur, Harsh (Indian Institute of Astrophysics, 2024)
    The chromosphere, situated between the bright photosphere and the remarkably thin transition region that precedes the million-degrees hot corona, is a highly dynamic and intricate layer within the solar atmosphere. By ...
  • Properties of shock waves in the quiet-Sun chromosphere 
    Mathur, Harsh; Joshi, Jayant; Nagaraju, K; van der Voort, Luc Rouppe; Bose, Souvik (EDP Sciences, 2022-12)
    Context. Short-lived (100 s or less), sub-arcsec to a couple of arcsec sized features of enhanced brightenings in the narrowband images at the H2V and K2V positions of the Ca ii H&K lines in the quiet Sun are known as ...
  • Simultaneous Spectropolarimetric Observations in the Hα and Ca II 8662Å Lines of an Active Region 
    Mathur, Harsh; Nagaraju, K; Yadav, Rahul; Joshi, Jayant (American Astronomical Society, 2024-08-10)
    We present spectropolarimetric observations of an active region recorded simultaneously in the Hα and the Ca II 8662 Å lines. The sunspot exhibits multiple structures, including a light bridge and a region where the Ca ...
  • Single shot solar spectroscopic design aspects 
    Mathur, Harsh (Indian Institute of Astrophysics, 2019-06)
    High time-cadence Spectro-Polarimetry allows the feasibility of studying magnetic field evolution coupled with the plasma flows. Such a high cadence solar spectro-polarimetry if developed will allow one to study magnetic ...
  • Solar mean magnetic field of the chromosphere 
    Vishnu, M; Nagaraju, K; Mathur, Harsh (Indian Academy of Sciences, 2023-12)
    The Solar Mean Magnetic Field (SMMF) is the mean value of the line-of-sight (LOS) component of the solar vector magnetic field averaged over the visible hemisphere of the Sun. So far, the studies on SMMF have mostly been ...
  • SunPy 
    Mumford, Stuart J; Freij, Nabil; Christe, Steven; Ireland, Jack; Mayer, Florian; Shih, Albert Y; Stansby, David; Hughitt, V. Keith; Ryan, Daniel F; Liedtke, Simon; Perez-Suarez, David; Kirk, Michael S; Mueller, Michael; Konge, Sudarshan; Srivastava, Rajul; Jain, Yash; Bennett, Samuel; Baruah, Ankit; Arbolante, Quinn; Charlton, Michael; Mishra, Sashank; Verma, Shresth; Maloney, Shane; Chorley, Nicky; Himanshu; Chouhan, Aryan; Mason, James Paul; Modi, Sanskar; Sharma, Yash; Zivadinovic, Lazar; Naman9639; Rozo, Jose Ivan Campos; Lemos, Sophie; Manley, Larry; Bobra, Monica G; Chatterjee, Agneet; Ivashkiv, Kateryna; von Forstner, J. F; Bazan, Juanjo; Stern, Kris Akira; Evans, John; Jain, Sarthak; Malocha, Michael; Agrawal, Ankit; Ghosh, Sourav; Airmansmith97; Stanczak, Dominik; Singh, Rajiv Ranjan; De Visscher, Ruben; Alam, Arib; Buddhika, Dumindu; Pathak, Himanshu; Rideout, Jai Ram; Sharma, Swapnil; Park, Jongyeob; Bates, Matt; Williams, Daniel; Mishra, Pankaj; Sharma, Deepankar; Goel, Dhruv; Taylor, Garrison; Cetusic, Goran; Reite, Guntbert; Jacob; Inchaurrandieta, Mateo; Dacie, Sally; Dubey, Sanjeev; Verma, Dipanshu; Eigenbrot, Arthur; Bray, Erik M; Aaron Paul, Jeffrey; Surve, Rutuja; Zahniy, Serge; Meszaros, Tomas; Parkhi, Utkarsh; Bose, Abhigyan; Pande, Abhishek; Price-Whelan, Adrian; Ballew, Jordan; Amogh, J; Chicrala, Andre; Ankit; Guennou, Chloe; D'Avella, Daniel; Murphy, Nick; Lodha, Priyank; Robitaille, Thomas; Augspurger, Tom; Krishan, Yash; honey; Neerajkulk; Vishnunarayan, K. I; Hill, Andrew; Mampaey, Benjamin; Wiedemann, Bernhard M; Molina, Carlos; Keşkek, Duygu; Habib, Ishtyaq; Letts, Joseph; Streicher, Ole; Gomillion, Reid; Kothari, Yash; Hayes, Laura; Mridulpandey; Stevens, Abigail L; Abijith, B; Bahuleyan, Abijith; Mehrotra, Ambar; Smith, Arfon; Kustov, Arseniy; Stone, Brandon; MacBride, Conor; Arias, Emmanuel; Chakraborty, Pritish; Tollerud, Erik; Dover, Fionnlagh Mackenzie; Verstringe, Freek; Kumar, Gulshan; Mathur, Harsh; Inglis, Andrew; Pattnaik, Punyaslok; Sipocz, Brigitta; Sharma, Rishabh; Leonard, Andrew; Hewett, Russell; Hamilton, Alex; Manhas, Abhijeet; Panda, Asish; Earnshaw, Matt; Barnes, Will; Choudhary, Nitin; Kumar, Ankit; Singh, Raahul; Chanda, Prateek; Akramul Haque, Md (Check ?, 2021-02-22)
  • SunPy: A Python package for Solar Physics 
    Mumford, S. J; Freij, Nabil; Christe, Steven; Ireland, Jack; Mayer, Florian; Hughitt, V. K; Shih, Albert Y; Ryan, Daniel F; Liedtke, Simon; Perez-Suarez, David; Chakraborty, Pritish; Arbolante, Quinn; Gomillion, Reid; Kothar, Yash; Sharma, Yash; Stevens, Abigail L; Price-Whelan, Adrian; Mehrotra, Ambar; Kustov, Arseniy; Stone, Brandon; Dang, Trung Kien; Arias, Emmanuel; Kustov; Stone, Brandon; Dang, Trung Kien; Arias, Emmanuel; Dover, Fionnlagh Mackenzie; Verstringe, Freek; Gulshan Kumar; Mathur, Harsh; and 21 co-authors; Vishnunarayan, K I; Inglis, Andrew; Pattnaik, Punyaslok; Sipocz, Brigitta; Rishabh Sharma; Leonard, Andrew; Stansby, David; Hewett, Russell; Hamilton, Alex; Hayes, Laura; Panda, Asish; Earnshaw, Matt; Choudhary, Nitin; Kumar, Ankit; Chanda, Prateek; Haque, Md Akramul; Kirk, Michael S; Mueller, Michael; Konge, Sudarshan; Srivastava, Rajul; Jain, Yash; Bennett, Samuel; Baruah, Ankit; Barnes, Will; Charlton, Michael; Maloney, Shane; Chorley, Nicky; Himanshu; Modi, Sanskar; Mason, James Paul; Naman9639; Rozo, Jose Ivan Campos; Manley, Larry; Chatterjee, Agneet; Evans, John; Malocha, Michael; Bobra, Monica G; Ghosh, Sourav; Airmansmith97; Stanczak, Dominik; De Visscher, Ruben; Verma, Shresth; Agrawal, Ankit; Buddhika, Dumindu; Sharma, Swapnil; Park, Jongyeob; Bates, Matt; Goel, Dhruv; Taylor, Garrison; Cetusic, Goran; Jacob; Inchaurrandieta, Mateo; Dacie, Sally; Dubey, Sanjeev; Sharma, Deepankar; Bray, Erik M; Rideout, Jai Ram; Zahniy, Serge; Meszaros, Tomas; Bose, Abhigyan; Chicrala, Andre; Ankit; Guennou, Chloe; D’Avella, Daniel; Williams, Daniel; Ballew, Jordan; Murphy, Nick; Lodha, Priyank; Robitaille, Thomas; Krishan, Yash; Hill, Andrew; Eigenbrot, Arthur; Mampaey, Benjamin; Wiedemann, Bernhard M; Molina, Carlos; Keşkek, Duygu; Habib, Ishtyaq; Letts, Joseph; Bazan, Juanjo (Check ?, 2020-02-14)
    The Sun, our nearest star, is a local laboratory for studying universal physical processes. Solar physics as a discipline includes studying the Sun both as a star and as the primary driver of space weather throughout the ...

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