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- Publications
- Influence
Minimum and Maximum Variance Analysis
- B. Sonnerup, Maureen P. Scheible
- Mathematics
- 1998
The main purpose of minimum or maximum variance analysis (MVA) is to find, from single-spacecraft data, an estimator for the direction normal to a one-dimensional or approximately one-dimensional… Expand
- 353
- 50
Magnetopause structure and attitude from Explorer 12 observations.
- B. Sonnerup, L. J. Cahill
- Physics
- 1967
It is shown how satellite magnetometer data at a magnetopause penetration can be used to determine the vector normal to the magnetopause current layer and the magnetic-field component along this… Expand
Magnetic field reconnection
- B. Sonnerup
- Physics
- 1979
A reasonably detailed description is obtained of the current status of our understanding of magnetic field reconnection. The picture that emerges is of a process, simple in concept but extremely… Expand
- 246
- 13
Plasma acceleration at the Earth's magnetopause: evidence for reconnection
- G. Paschmann, B. Sonnerup, +7 authors R. Elphic
- Physics
- Nature
- 15 November 1979
A characteristic of magnetic field reconnection is the acceleration of plasma as it flows across a rotational discontinuity. At the Earth's magnetopause this effect has only been observed recently… Expand
Adiabatic particle orbits in a magnetic null sheet
- B. Sonnerup
- Physics
- 1 December 1971
The adiabatic theory is presented for charged particles moving in a region where the main component of the magnetic field reverses its direction. The unperturbed field configuration is… Expand
Modulation instability of circularly polarized Alfvén waves
- M. Longtin, B. Sonnerup
- Physics
- 1 June 1986
The stability of a finite amplitude circularly polarized Alfven wave of wave number k0 is studied by using the two-fluid isentropic equations. Linear perturbation analysis, involving two sideband… Expand
Extended magnetic reconnection at the Earth's magnetopause from detection of bi-directional jets
- T. Phan, L. Kistler, +17 authors H. Rème
- Physics, Medicine
- Nature
- 20 April 2000
Magnetic reconnection is a process that converts magnetic energy into bi-directional plasma jets; it is believed to be the dominant process by which solar-wind energy enters the Earth's… Expand
Acceleration of particles reflected at a shock front
- B. Sonnerup
- Physics
- 1 March 1969
Reflected particle acceleration at magnetospheric bow shock front attributed to interplanetary electric field
Explorer 12 observations of the magnetopause current layer
- B. Sonnerup, L. J. Cahill
- Physics
- 1 March 1968
The variation in magnetic field magnitude at magnetopause is examined with the objective of separating boundaries of the rotational-discontinuity type from those of the tangential-discontinuity type.… Expand
Magnetic field reconnection in cosmic plasmas
- B. Sonnerup
- Physics
- 1985
A brief review is presented of the concept of magnetic field reconnection or merging. This process occurs whenever an electric field is present along a separator line in the magnetic field. The basic… Expand