Publications

2025

1. Harsh Mathur, Jayant Joshi, Thore Espedal Moe, Tiago M. D. Pereira, and K. Nagaraju, The Hα line as a probe of chromospheric magnetic fields (Submitted, 2025).

2. Aditi Bhatnagar, Avijeet Prasad, Daniel Nóbrega-Siverio, Luc H. M. Rouppe van der Voort, and Jayant Joshi, Small-scale dynamic phenomena associated with interacting fan-spine topologies: quiet-Sun Ellerman bombs, UV brightenings, and chromospheric inverted-Y-shaped jets, (Submitted, 2025).

3. Mats Ola, Luc H. M. Rouppe van der Voort, Jayant Joshi, Souvik Bose, Daniel Nóbrega-Siverio, and Ana Belén Griñón-Marín, Quiet Sun Ellerman bombs as a possible proxy for reconnection-driven spicules, 2025arXiv250405396S, (in press, 2025).

4. Annu Bura, Tanmoy Samanta, Alphonse C. Sterling, Yajie Chen, Jayant Joshi, Vasyl Yurchyshyn, and Ronald L. Moore, Unveiling the Dynamics and Genesis of Small-scale Fine Structure Loops in the Lower Solar Atmosphere, 2025arXiv250309667B (in press, 2025).

5. Souvik Bose, Jayant Joshi, Paola Testa, and Bart De Pontieu, On the million-degree signature of spicules, ApJL 983 L7 (2025).

6. Aditi Bhatnagar, Avijeet Prasad, Daniel Nóbrega-Siverio, Luc H. M. Rouppe van der Voort, and Jayant Joshi, Magnetic topology of quiet-Sun Ellerman bombs and associated ultraviolet brightenings,  A&A 693, 221 (2025).

2024

7. Bhinva Ram, Tanmoy Samanta, Yajie Chen, Alphonse C. Sterling, Jayant Joshi, Vasyl Yurchyshyn, Lakshmi Pradeep Chitta, and Vaibhav Pant, Transition Region Brightening in a Moss Region and Their Relation with Lower Atmospheric Dynamics,  ApJ 977, 25 (2024).

8. Aditi Bhatnagar, Luc H. M. Rouppe van der Voort, and Jayant Joshi, Transition region response to quiet-Sun Ellerman bombs, A&A 689, 156 (2024).

9. Harsh Mathur, K. Nagaraju, Rahul Yadav, and Jayant Joshi, Simultaneous Spectropolarimetric Observations in the Hα and Ca II 8662 Å Lines of an Active Region, ApJ 971, 30 (2024).

10. Luc H. M. Rouppe van der Voort, Jayant Joshi, and Kilian Krikova, Observations of magnetic reconnection in the deep solar atmosphere in the H-epsilon line, A&A 683, 290 (2024).

11. David C. L. Millar, Lyndsay Fletcher, and Jayant Joshi, Intensity and velocity oscillations in a flaring active region, MNRAS 527, 5916–5928 (2024).

2023

12. Harsh Mathur, K. Nagaraju, Jayant Joshi, and Jaime de la Cruz Rodríguez, Do Hα Stokes V Profiles Probe the Chromospheric Magnetic Field? An Observational Perspective, ApJ 946, 38 (2023).

2022

13. Harsh Mathur, Jayant Joshi, K. Nagaraju, Luc Rouppe van der Voort, and Souvik Bose, Properties of shock waves in the quiet-Sun chromosphere, A&A 668, A153 (2022).

14. Jayant Joshi and Luc H. M. Rouppe van der Voort, Properties of ubiquitous magnetic reconnection events in the lower solar atmosphere, A&A 664, A72 (2022). 

2021

15. Souvik Bose, Luc Rouppe van der Voort, Jayant Joshi, Vasco M. J. Henriques, Daniel Nóbrega-Siverio, Juan Martínez-Sykora, and Bart De Pontieu, Evidence of the multi-thermal nature of spicular downflows. Impact on solar atmospheric heating, A&A 654, A51 (2021).

16. Tine Libbrecht, Johan P. Bjørgen, Jorrit Leenaarts, Jaime de la Cruz Rodríguez, Viggo Hansteen, and Jayant Joshi, Line formation of He I D3 and I 10 830 Å in a small-scale reconnection event, A&A 652, A146 (2021).

17. Luc H. M. Rouppe van der Voort, Jayant Joshi, Vasco M. J. Henriques, and Souvik Bose, Signatures of ubiquitous magnetic reconnection in the deep atmosphere of sunspot penumbrae, A&A 648, A54 (2021).

18. Souvik Bose, Jayant Joshi, Vasco M. J. Henriques, and Luc Rouppe van der Voort, Spicules and downflows in the solar chromosphere, A&A 647, A147 (2021).

2020

19. Jayant Joshi, Luc H. M. Rouppe van der Voort, and Jaime de la Cruz Rodríguez, Signatures of ubiquitous magnetic reconnection in the lower solar atmosphere, A&A 641, L5 (2020).

     Appeared as a rsearch highlights of 2020 in A&A

20. L. H. M. Rouppe van der Voort, ..., Jayant Joshi, ..., et al., High-resolution observations of the solar photosphere, chromosphere, and transition region. A database of coordinated IRIS and SST observations, A&A 641, A146 (2020). 

2019

21. Souvik Bose, Vasco M. J. Henriques, Jayant Joshi, and Luc Rouppe van der Voort, Characterization and formation of on-disk spicules in the Ca II K and Mg II k spectral lines, A&A 631, L5 (2019). 

2018

22. Jayant Joshi and Jaime de la Cruz Rodríguez, Magnetic field variations associated with umbral flashes and penumbral waves, A&A 619, A63 (2018).

2017

23. Jayant Joshi, Andreas Lagg, Johann Hirzberger, and Sami K. Solanki, Three-dimensional magnetic structure of a sunspot: Comparison of the photosphere and upper chromosphere, A&A 604, A98 (2017).

  ⬅ Appeared as the cover page of A&A Volume 604 

24. Jayant Joshi, Andreas Lagg, Johann Hirzberger, Sami K. Solanki, and Sanjiv K. Tiwari, Vertical magnetic field gradient in the photospheric layers of sunspots, A&A 599, A35 (2017).

25. Tine Libbrecht, Jayant Joshi, Jaime de la Cruz Rodríguez, Jorrit Leenaarts, and Andrés Asensio Ramos, Observations of Ellerman bomb emission features in He I D3 and He I 10830 Å, A&A 598, A33 (2017).

26. Jayant Joshi, Andreas Lagg, Sami K. Solanki et. al, Upper chromospheric magnetic field of a sunspot penumbra: observations of fine structure, A&A 596, A8 (2017).

2016

27. T. Felipe, ..., Jayant Joshi, ..., et al., Three-dimensional structure of a sunspot light bridge, A&A 596, A59 (2016).

28. Jorrit Leenaarts, Thomas Golding, Mats Carlsson, Tine Libbrecht, and Jayant Joshi, The cause of spatial structure in solar He I 1083 nm multiplet images, A&A 594, A104 (2016).

2012-2015

😴 💤

2011

29. Jayant Joshi, A. Pietarila, J. Hirzberger, S. K. Solanki, R. Aznar Cuadrado, and L. Merenda, Convective Nature of Sunspot Penumbral Filaments: Discovery of Downflows in the Deep Photosphere, ApJL 734, L18 (2011).

2009

30. Sanjiv Kumar Tiwari, P. Venkatakrishnan, Sanjay Gosain, and Jayant Joshi, Effect of Polarimetric Noise on the Estimation of Twist and Magnetic Energy of Force-Free Fields, ApJ 700, 199 (2009).

2008

31. Sanjay Gosain, Sanjiv Tiwari, Jayant Joshi, and P. Venkatakrishnan, Software for interactively visualizing solar vector magnetograms of Udaipur solar observatory, JAA 29,107 (2008).

32. Sanjiv Kumar Tiwari, Jayant Joshi, Sanjay Gosain, and P. Venkatakrishnan, Evolution of Magnetic Helicity in NOAA 10923 Over Three Consecutive Solar Rotations. Turbulence, Dynamos, Accretion Disks, Pulsars and Collective Plasma Processes. Astrophysics and Space Science Proceedings, ISBN 978-1-4020-8867-4. Springer Netherlands, p. 329 (2008).