Ulysses cracks a cosmic peanut

Article Abstract:

Measurements taken by the Ulysses spacecraft indicates that the sun's heliosphere is shaped more like a peanut than a sphere. The heliosphere may balloon out at the solar poles because the solar wind is stronger there than at the sun's ecliptic, the plane through which the planets orbit.

Observations, Solar system, Ulysses (Space probe), Solar atmosphere

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Casting a wide net for cosmic rays

Article Abstract:

A group calling itself the Pierre Auger collaboration plans a series of water-tank detectors to detect high-energy cosmic rays. The as-yet unfunded detectors would gather rays of at least 10-to-the-20th electron volts, to provide clues to the mysterious source of such violent energies.

Planning, Measurement, Detection equipment, Cosmic rays, Detectors

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Radio galaxies: born in cosmic crackups?

Article Abstract:

Astronomers Andrew Wilson and Edward Colbert have proposed that radio galaxies result from the collision of two active galactic nuclei (AGNs). When the black holes at the center of AGNs collide, they coalesce into one, fast-spinning black hole, which emits radio waves.

Conferences, meetings and seminars, Radio sources (Astronomy), Radio sources (Astronomical bodies), Active galaxies, American Astronomical Society

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