78 citations · 739 across the 24 of their papers we have counts for
23 papers
Exploring source region of 3-min slow magnetoacoustic waves observed in coronal fan loops rooted in sunspot umbra
Ananya Rawat, Girjesh R. Gupta
Sunspots host various oscillations and wave phenomena like umbral flashes, umbral oscillations, running penumbral waves, and coronal waves. All fan loops rooted in sunspot umbra co…
Spectroscopic and imaging observations of transient hot and cool loops by IRIS and SDO
Girjesh R. Gupta, Sushree S. Nayak
Coronal loops are basic building blocks of solar atmosphere and are observed on various length scales. However, their formation mechanism is still unclear. In this paper, we presen…
Wave amplitude modulation in fan loops as observed by AIA/SDO
Aishawnnya Sharma, Durgesh Tripathi, Robertus Erdelyi +2
We perform multiwavelength time-distance analysis of a fan loop system anchored in an isolated sunspot region AR 12553. The active region was observed by the Atmospheric Imaging As…
Exploring the damping of Alfvén waves along a long off-limb coronal loop, up to 1.4 R
Girjesh R. Gupta, G. Del Zanna, H. E. Mason
The Alfvén wave energy flux in the corona can be explored using the electron density and velocity amplitude of the waves. The velocity amplitude of Alfvén waves can be obtained fro…
Hinode EIS line widths in the quiet corona up to 1.5 Rsun
G. Del Zanna, G. R. Gupta, H. E. Mason
We present an analysis of several Hinode EIS observations of coronal line widths in the quiet Sun, up to 1.5 Rsun radial distances. No significant variations are found, which indic…
Observation and Modeling of Chromospheric Evaporation in a Coronal Loop Related to Active Region Transient Brightening
G. R. Gupta, Aveek Sarkar, Durgesh Tripathi
Using the observations recorded by Atmospheric Imaging Assembly (AIA) on-board the Solar Dynamics Observatory (SDO), the Interface Region Imaging Spectrograph (IRIS) and the Extrem…