Browsing by Author "Lakhina, Gurbax S."

Browsing by Author "Lakhina, Gurbax S."

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  • Diminishing activity of recent solar cycles (22–24) and their impact on geospace 
    Kakad, Bharati; Kakad, Amar; Ramesh, Durbha Sai; Lakhina, Gurbax S. (2019)
    This study examines the variation of different energies linked with the Sun and the Earth’s magnetosphere-ionosphere systems for solar cycles (SCs) 22–24 for which the gradual decrease in the solar activity is noticed. ...
  • Lower‐band “Monochromatic” chorus riser subelement/wave packet observations 
    Tsurutani, Bruce T.; Chen, Rui; Gao, Xinliang; Lu, Quanming; Pickett, Jolene S.; Lakhina, Gurbax S.; Sen, Abhijit; Hajra, Rajkumar; Park, Sang A; Falkowski, Barbara J. (2020)
    Three lower‐band (f< 0.5 fce) chorus riser elements detected in the dayside generation region were studied in detail using the Van Allen Probe data. Two subelements/wave packets within each riser were examined for their ...
  • Multipoint analysis of source regions of EMIC waves and rapid growth of subpackets 
    Ojha, Biswajit; Omura, Yoshiharu; Singh, Satyavir; Lakhina, Gurbax S. (2021)
    Electromagnetic Ion Cyclotron (EMIC) rising tone emissions are important in understanding the nonlinear wave evolution and interaction with the energetic particles. We present observations of rising tone emissions of EMIC ...
  • Observations of co-existing rising and falling tone emissions of electromagnetic ion cyclotron waves 
    Ojha, Biswajit; Omura, Yoshiharu; Singh, Satyavir; Lakhina, Gurbax S. (2024)
    We report observations of co-existing rising and falling tone emissions of electromagnetic ion cyclotron (EMIC) waves by THEMIS E spacecraft. The investigation of these fne structures of the EMIC waves is essential from ...
  • Plasmaspheric Hiss: Coherent and Intense 
    Tsurutani, Bruce T.; Park, Sang A.; Falkowski, Barbara J.; Lakhina, Gurbax S.; Pickett, Jolene S.; Bortnik, Jacob; Hospodarsk, George; Santolik, Ondrej; Parrot, Michel; Henri, Pierre; Hajra, Rajkumar (2018)
    Intense ~300-Hz to 1.0-kHz plasmaspheric hiss was studied using Polar plasma wave data. It is found that the waves are coherent in all local time sectors with the wave coherency occurring in approximately three- to ...
  • Space plasma physics: a review 
    Tsurutani, Bruce T.; Zank, Gary P.; Sterken, Veerle J.; Shibata, Kazunari; Nagai, Tsugunobu; Mannucci, Anthony J.; Malaspina, David M.; Lakhina, Gurbax S.; Kanekal, Shrikanth G.; Hosokawa, Keisuke; Horne, Richard B.; Hajra, Rajkumar; Glassmeier, Karl-Heinz; Gaunt, C. Trevor; Chen, Peng-Fei; Akasofu, Syun-Ichi (2022)
    Owing to the ever-present solar wind, our vast solar system is full of plasmas. The turbulent solar wind, together with sporadic solar eruptions, introduces various space plasma processes and phenomena in the solar ...
  • The Structure and Microstructure of Rising-Tone Chorus With Frequencies Crossing at f ∼ 0.5 fce 
    Chen, Rui; Tsurutani, Bruce T.; Gao, Xinliang; Lu, Quanming; Chen, Huayue; Lakhina, Gurbax S.; Hajra, Rajkumar (2022)
    Intense, midnight-to-dawn sector, near-equatorial, chorus rising tones which cross frequencies of_0.5_ce have been analyzed to determine their structures and possible substructures. Upper 𝐴𝐴band (𝐴𝐴 ≥ 0.5𝑓𝑓ce ) chorus ...