activity
20192026
most citedSpatially separated continuum sources revealed by microlensing in the gravitationally lensed broad absorption line quasar SDSSJ081830.46+060138.0

11 citations · 11 across the 6 of their papers we have counts for

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astro-ph.SR2026

Breakout/Interchange Reconnection as a driver of Jets, Fast CME, and Solar Energetic Particles

Pankaj Kumar, Judith T. Karpen, David Lario +4

Understanding how energetic particles are accelerated and released from the low corona into the interplanetary medium during solar eruptions is crucial for space weather research.…

astro-ph.SR2025

Solar Eruption Onset and Particle Acceleration in Nested-Null Topologies

Pankaj Kumar, Judith T. Karpen, Peter F. Wyper +3

The magnetic breakout model explains a variety of solar eruptions, ranging from small-scale jets to large-scale coronal mass ejections (CMEs). Most of our previous studies are focu…

astro-ph.SR2025

Imaging and Radio Signatures of Shock-Plasmoid Interaction

Pankaj Kumar, Judith T. Karpen, P. K. Manoharan +1

Understanding how shocks interact with coronal structures is crucial for understanding the mechanisms of particle acceleration in the solar corona and inner heliosphere. Using simu…

astro-ph.SR2025

X-ray/Radio Quasi-periodic Pulsations Associated with Plasmoids in Solar Flare Current Sheets

Pankaj Kumar, Judith T. Karpen, Joel T. Dahlin

Plasmoids (or magnetic islands) are believed to play an important role in the onset of fast magnetic reconnection and particle acceleration during solar flares and eruptions. Direc…

astro-ph.SR2024

Direct Imaging of a Prolonged Plasma/Current Sheet and Quasiperiodic Magnetic Reconnection on the Sun

Pankaj Kumar, Judith T. Karpen, Vasyl Yurchyshyn +2

Magnetic reconnection is widely believed to be the fundamental process in the solar atmosphere that underlies magnetic energy release and particle acceleration. This process is res…

astro-ph.SR2024

Multiwavelength observations of a breakout jet at an active region periphery

Pradeep Kayshap, Judith T. Karpen, Pankaj Kumar

We analysed Interface-Region Imaging Spectrograph (IRIS) and the Solar Dynamics Observatory/Atmospheric Imaging Assembly (SDO/AIA) observations of a small coronal jet that occurred…