Zobrazeno 1 - 10
of 17
pro vyhledávání: '"P. C. Hedgecock"'
Publikováno v:
Journal of Geophysical Research: Space Physics. 83:3195-3216
Further Heos 2 plasma and magnetic field data obtained in the frontside boundary layers of the magnetosphere are presented. They reveal that the low-latitude extension of the entry layer is of a somewhat different nature. The most pronounced differen
Autor:
P. C. Hedgecock, B. T. Thomas
Publikováno v:
Geophysical Journal International. 41:391-403
Summary The preliminary results of an analysis of magnetic field measurements made over a five-year period in the Earth‘s magnetosphere are presented. These measurements were obtained from Imperial College experiments in the European Space Research
Autor:
P. C. Hedgecock, J. E. Humble
Publikováno v:
Journal of Geophysical Research. 79:4775-4778
Magnetic power spectra parallel and perpendicular to the local magnetic field and in the frequency range 3.3 × 10−4 to 2.6 × 10−3 Hz are reported for both the magnetosheath and the magnetosphere. The measurements were mostly obtained in regions
Autor:
P. C. Hedgecock
Publikováno v:
Solar Physics. 42:497-527
Field strength distributions and low frequency power spectra are derived from interplanetary field measurements made by the HEOS-1 and HEOS-2 satellites during the years 1969–1973. The spectral analysis involved the use of a technique which is show
Plasma and Magnetic Field Characteristics of the Distant Polar Cusp near Local Noon: The Entry Layer
Publikováno v:
Journal of Geophysical Research. 81:2883-2899
Heos 2 plasma and magnetic field measurements in the distant polar cusp region reveal the existence of a plasma layer on day side field lines just inside the magnetopause. Density and temperature in this layer are nearly the same as they are in the a
Autor:
P. C. Hedgecock
Publikováno v:
Solar Physics. 44:205-224
Data from the two HEOS satellites obtained during the period December 1968 to August 1974 are used to investigate the large-scale properties of the interplanetary magnetic field.
Autor:
Christopher T. Russell, Marcia Neugebauer, E. W. Greenstadt, V. Formisano, F. L. Scarf, Robert E. Holzer, P. C. Hedgecock
Publikováno v:
Journal of Geophysical Research. 82:651-666
A thick, quasi-parallel bow shock structure was observed with field and particle detectors of both HEOS 1 and OGO 5. The typical magnetic pulsation structure was at least 1 to 2 earth radii thick radially and was accompanied by irregular but distinct
Autor:
P. C. Hedgecock, V. Formisano
Publikováno v:
Il Nuovo Cimento B Series 11. 24:1-10
A study of the fine structure of the Earth’s bow shock is presented using high-time-resolution data from HEOS-1. The study refers to previously defined laminar and quasi-laminar structures. The shock thickness appears to be of the order ofc/ω pi a
Publikováno v:
Journal of Geophysical Research. 77:1116-1122
The earth's bow shock exhibited a clean laminar profile at low Mach number as it crossed and recrossed Ogo 5, Heos 1, and Explorer 33 on February 12, 1969. The approximate 120 earth radii distance between Heos and Explorer during one set of crossings
Autor:
P. C. Hedgecock, V. Formisano
Publikováno v:
Journal of Geophysical Research. 78:6522-6534
A few short bow shock crossings have been studied (Days 44, 53, 255, and 48, 1969). The first three events are shown to be incomplete shock crossings; i.e., the satellite spent a few minutes each time within the shock layer. Large-amplitude waves are