منابع مشابه
Millimeter Observations of Flares
The nature of emission from solar ares at millimeter wavelengths is discussed. In the impulsive phase of ares, millimeter emission should be dominated by gyrosynchrotron emission from MeV{energy electrons. Millimeter telescopes are very sensitive to these electrons and can make high{resolution images of their sources for comparison with HESSI images, allowing us to investigate the behaviour of ...
متن کاملMillimeter Interferometer Observations of Flares
This paper addresses the current state of millimeter interferometry of solar ares and the issues which can be addressed by such observations. Millimeter interferometers such as BIMA detect gyrosynchrotron emission from MeV{energy electrons in the impulsive phase of solar ares as well as from hot dense plasma in the thermal decay phase. BIMA now consists of 10 antennas and is capable of snapshot...
متن کاملSimultaneous Optical and X-ray Observations of Flares and Rotational Modulation on the RS CVn
We present simultaneous and continuous observations of the Hα, Hβ, He i D3, Na i D1,D2 doublet and the Ca ii H & K lines for the RS CVn system HR 1099. The spectroscopic observations were obtained during the MUSICOS 1998 campaign involving several observatories and instruments, both echelle and long-slit spectrographs. During this campaign, HR 1099 was observed almost continuously for more than...
متن کاملMusicos 1998: Optical and X-rays Observations of Flares on the Rs Cvn Binary Hr 1099
We present simultaneous and continuous observations of Hα, Hβ, Na i D1, D2 and He i D3 lines of the chromospherically active binary HR 1099. We have observed HR 1099 for more than 3 weeks almost continuously and monitored two flares. An increase in Hα, Ca ii H & K, Hβ, Hei D3 and Hei λ6678 and a strong filling-in of the Nai D1, D2 and Mgi b triplet during one of the flares are observed. We have...
متن کاملPlasma near the Heliosheath: Observations and Interpretations
Voyager 2 (V2) has observed heliosheath plasma since 2007 August. The plasma flux decreases by 25% before the termination shock (TS), then, as V2 moved into the heliosheath, the plasma density, temperature, and flux all decreased by an additional factor of 2. We suggest three effects combine to cause these decreases. (1) V2 moved into the lower-flux transition region between the lowand high-spe...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1995
ISSN: 0252-9211
DOI: 10.1017/s0252921100034552