Zobrazeno 1 - 10
of 197
pro vyhledávání: '"Hajra Rajkumar"'
Autor:
Hajra, Rajkumar, Tsurutani, Bruce Tsatnam, Lu, Quanming, Horne, Richard B., Lakhina, Gurbax Singh, Yang, Xu, Henri, Pierre, Du, Aimin, Gao, Xingliang, Wang, Rongsheng, Lu, San
The 23-24 April 2023 double-peak (SYM-H intensities of -179 and -233 nT) intense geomagnetic storm was caused by interplanetary magnetic field southward component Bs associated with an interplanetary fast-forward shock-preceded sheath (Bs of 25 nT),
Externí odkaz:
http://arxiv.org/abs/2409.08118
Autor:
Tsurutani, Bruce T., Sen, Abhijit, Hajra, Rajkumar, Lakhina, Gurbax S., Horne, Richard B., Hada, Tohru
Publikováno v:
published through: Journal of Geophysical Research: Space Physics, volume : 129, number: e2024JA032622, year: 2024
Updated summaries of the August 1972 and March 1989 space weather events have been constructed. The features of these two events are compared to the Carrington 1859 event and a few other major space weather events. It is concluded that solar active r
Externí odkaz:
http://arxiv.org/abs/2409.00452
The recent superstorm of 2024 May 10-11 is the second largest geomagnetic storm in the space age and the only one that has simultaneous interplanetary data (there were no interplanetary data for the 1989 March storm). The May superstorm was character
Externí odkaz:
http://arxiv.org/abs/2408.14799
Autor:
Despirak, Irina, Setsko, Pavel, Lubchich, Andris, Hajra, Rajkumar, Sakharov, Yaroslav, Lakhina, Gurbax, Selivanov, Vasiliy, Tsurutani, Bruce Tsatnam
We analyzed intense geomagnetically induced currents (GICs) recorded during a complex space weather event observed on 23-24 April 2023. Two geomagnetic storms characterized by SYM/H intensities of -179 nT and -233 nT was caused by southward IMG Bz of
Externí odkaz:
http://arxiv.org/abs/2312.15976
Autor:
Tsurutani Bruce T., Hajra Rajkumar
Publikováno v:
Journal of Space Weather and Space Climate, Vol 11, p 23 (2021)
The interplanetary and magnetospheric phenomena time-coincident with intense geomagnetically induced current (GIC) > 10 A and > 30 A events during 21 years (1999 through 2019) at the Mäntsälä, Finland (57.9° magnetic latitude) gas pipeline have b
Externí odkaz:
https://doaj.org/article/1985504cfee24541b17f0bcfdad7edbe
Autor:
Guarnieri, Fernando L., Tsurutani, Bruce T., Hajra, Rajkumar, Echer, Ezequiel, Lakhina, Gurbax S.
The North American Aerospace Defense Command (NORAD) tracking of the SpaceX Starlink satellite launch on February 03, 2022 is reviewed. Of the 49 Starlink satellites released into orbit, 38 were eventually lost. Thirty-two of the satellites were neve
Externí odkaz:
http://arxiv.org/abs/2307.02923
Publikováno v:
Journal of Geophysical Research: Space Physics, 2023
The Colaba, India ~-1600 nT magnetic spike caused by an interplanetary sheath magnetic field inducing a "dayside R1-field aligned current wedge" during the Carrington magnetic storm proposed by Ohtani (2022, https://doi.org/10.1029/2022JA030596) seem
Externí odkaz:
http://arxiv.org/abs/2304.10043
Autor:
Hajra Rajkumar, Chakraborty Shyamal Kumar, Tsurutani Bruce T., DasGupta Ashish, Echer Ezequiel, Brum Christiano G.M., Gonzalez Walter D., Sobral José Humberto Andrade
Publikováno v:
Journal of Space Weather and Space Climate, Vol 6, p A29 (2016)
We present a geomagnetic quiet time (Dst > −50 nT) empirical model of ionospheric total electron content (TEC) for the northern equatorial ionization anomaly (EIA) crest over Calcutta, India. The model is based on the 1980–1990 TEC measurements f
Externí odkaz:
https://doaj.org/article/b27d9402a5bc46c08f4d55718b2e2b6f
Autor:
Verkhoglyadova Olga, Meng Xing, Mannucci Anthony J., Tsurutani Bruce T., Hunt Linda A., Mlynczak Martin G., Hajra Rajkumar, Emery Barbara A.
Publikováno v:
Journal of Space Weather and Space Climate, Vol 6, p A20 (2016)
We analyze the energy budget of the ionosphere-thermosphere (IT) system during two High-Speed Streams (HSSs) on 22–31 January, 2007 (in the descending phase of solar cycle 23) and 25 April–2 May, 2011 (in the ascending phase of solar cycle 24) to
Externí odkaz:
https://doaj.org/article/4a77579ba5e14aa8a05f38d0ee95c8e1
On ~1613 UT, 3 February 2022 SpaceX launched 49 Starlink satellites from Cape Kennedy, Florida into ~210 km altitude orbits where they were to receive subsequent boosts. We assume that 9 satellites received subsequent boosts and succeeded in obtainin
Externí odkaz:
http://arxiv.org/abs/2210.07902