Results 61 to 70 of about 36,673 (286)

The Phase Space Density Evolution of Radiation Belt Electrons under the Action of Solar Wind Dynamic Pressure

Magnetochemistry, 2023
Earth’s radiation belt and ring current are donut-shaped regions of energetic and relativistic particles, trapped by the geomagnetic field. The strengthened solar wind dynamic pressure (Pdyn) can alter the structure of the geomagnetic field, which can ...
Peng Hu, Haimeng Li, Zhihai Ouyang, Rongxin Tang, Liangjin Song, An Yuan, Bopu Feng, Yangyang Wang, Wenqian Zou   +8 more
doaj   +1 more source

Can strong substorm-associated MeV electron injections be an important cause of large radiation belt enhancements?

Frontiers in Astronomy and Space Sciences, 2023
It has become well-established that strong outer radiation belt enhancements are due to wave-driven electron energization by whistler-mode chorus waves.
Hee-Jeong Kim, S. J. Noh, S. J. Noh, D. Y. Lee, L. Lyons, J. Bortnik, T. Nagai, W. Choe, M. Hua   +8 more
doaj   +1 more source

Quantifying the radiation belt seed population in the 17 March 2013 electron acceleration event [PDF]

, 2014
We present phase space density (PSD) observations using data from the Magnetic Electron Ion Spectrometer instrument on the Van Allen Probes for the 17 March 2013 electron acceleration event.
Baker, D. N., Blake, J. B., Boyd, A. J., Claudepierre, S., Fennell, Joseph F., Reeves, Geoffrey, Spence, Harlan E., Turner, D. L.   +7 more
core   +2 more sources

The global statistical response of the outer radiation belt during geomagnetic storms [PDF]

, 2018
Using the total radiation belt electron content calculated from Van Allen Probe phase space density (PSD), the time-dependent and global response of the outer radiation belt during storms is statistically studied.
Anderson, Aryan, Baker, Baker, Baker, Baker, Baker, Baker, Blake, Borovsky, Boyd, Boyd, Chen, Claudepierre, Elkington, Forsyth, Halford, Hietala, Horne, Horne, Hutchinson, Jaynes, Kanekal, Kataoka, Kilpua, Kilpua, Kim, King, Li, Li, Loto'aniu, Mann, Mann, Mathie, Mauk, Meredith, Millan, Miyoshi, Miyoshi, Murphy, Murphy, Murphy, Orlova, Ozeke, Ozeke, Ozeke, Pahud, Rae, Rae, Reeves, Reeves, Schulz, Shen, Shprits, Shue, Sibeck, Su, Thorne, Thorne, Tsyganenko, Turner, Turner, Turner, Turner, Usanova, West, Wrenn, Yokoyama, Yuan, Yuan   +69 more
core   +3 more sources

Estimating the Impacts of Radiation Belt Electrons on Atmospheric Chemistry Using FIREBIRD II and Van Allen Probes Observations

Journal of Geophysical Research: Atmospheres, 2021
This study considers the impact of electron precipitation from Earth's radiation belts on atmospheric composition using observations from the NASA Van Allen Probes and NSF Focused Investigations of Relativistic Electron Burst Intensity, Range, and ...
K. Duderstadt, C. L. Huang, H. Spence, S. Smith, J. Blake, A. Crew, A. Johnson, D. Klumpar, Daniel R. Marsh, J. Sample, M. Shumko, F. Vitt   +11 more
semanticscholar   +1 more source

Plasmatrough exohiss waves observed by Van Allen Probes: Evidence for leakage from plasmasphere and resonant scattering of radiation belt electrons [PDF]

, 2015
Exohiss waves are whistler mode hiss observed in the plasmatrough region. We present a case study of exohiss waves and the corresponding background plasma distributions observed by the Van Allen Probes in the dayside low-latitude region.
Abel, Abel, Bortnik, Bortnik, Bortnik, Bortnik, C. A. Kletzing, Chao Shen, Chen, Chen, Church, Cornilleau-Wehrlin, D. N. Baker, Denton, Fuliang Xiao, Funsten, G. B. Hospodarsky, G. D. Reeves, Glauert, Green, H. E. Spence, H. O. Funsten, Horne, Hui Zhu, Huinan Zheng, J. B. Blake, Kletzing, Li, Li, Li, Lyons, Mauk, Meredith, Meredith, Mourenas, Ni, Ni, Russell, Santolik, Shprits, Shui Wang, Sonwalkar, Su, Su, Summers, Summers, Summers, Tao Xian, Thorne, Thorne, Thorne, W. S. Kurth, Yuming Wang, Zhenpeng Su   +53 more
core   +3 more sources

Clementine undergoing radiation test of Van Allen Belts

Eos, Transactions American Geophysical Union, 1994
Plans for the joint Department of Defense (DoD)‐NASA spacecraft Clementine to continue to film the asteroid Geographos have been officially canceled.Yet project scientists are using the opportunity to test how the robot spacecraft fares in Earth's radiation belts. There is speculation that the twenty‐three experimental technologies aboard the craft may
openaire   +1 more source

The ring current, geomagnetic disturbance, and the Van Allen radiation belts [PDF]

Journal of Geophysical Research, 1961
The large decrease in the horizontal component of the earth's field during the main phase of magnetic storms is ascribed to the formation or enhancement of a geomagnetic ring current. The motions of particles trapped in the earth's dipole field and the resulting ring current are discussed. These calculations deal only with a steady state, though during
Akasofu, S.-I., Chapman, S.
openaire   +1 more source

The Chandra X-Ray Observatory's Radiation Environment and the AP-8/AE-8 Model

, 2000
The Chandra X-ray Observatory (CXO) was launched on July 23, 1999 and reached its final orbit on August 7, 1999. The CXO is in a highly elliptical orbit, approximately 140,000 km x 10,000 km, and has a period of approximately 63.5 hours (~ 2.65 days). It
Butt, Yousaf M., Mueller-Mellin, Reinhold, Plucinsky, Paul P., Virani, Shanil N.   +3 more
core   +2 more sources

Effect of EMIC waves on relativistic and ultrarelativistic electron populations: Ground-based and Van Allen Probes observations [PDF]

, 2014
We study the effect of electromagnetic ion cyclotron (EMIC) waves on the loss and pitch angle scattering of relativistic and ultrarelativistic electrons during the recovery phase of a moderate geomagnetic storm on 11 October 2012.
A. Drozdov, A. Kale, Baker, Baker, C. Kletzing, Cornwall, D. K. Milling, D. L. Turner, D. N. Baker, Evans, G. D. Reeves, H. E. Spence, I. R. Mann, J. Wygant, K. Orlova, Kennel, Kessell, Kletzing, Li, M. E. Usanova, M. T. Robertson, Mann, Mann, Meredith, Rodger, S. A. Thaller, Shprits, Shprits, Spence, Summers, Summers, Tsyganenko, Ukhorskiy, Usanova, Usanova, Wygant, Y. Shprits   +36 more
core   +3 more sources