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Signature of the solar cycle in the low degree p-modes using Mark-I
Sebastián J. Jiménez-Reyes, Thierry Corbard, Pere L. Pallé
High quality observations of the low degree p-modes exist for almost two complete solar cycles using the solar spectrophotometer Mark-I, located and operating at the Observatorio d…
LOWL p-mode frequencies and their variation with solar activity
Sebastián J. Jiménez-Reyes, Thierry Corbard, Pere L. Pallé +1
We present an analysis of the frequency shift and the even terms of the frequency splitting coefficients carried out using six years of LOWL data, starting in 1994. The temporal va…
VLBI imaging of the gravitational lenses B1422+231 and MGJ0414+0534
E. Ros, J. C. Guirado, J. M. Marcaide +5
We present wide-field images of the quadruple gravitational lenses B1422+231 and MGJ0414+0534 obtained from global Very Long Baseline Interferometry (VLBI) observations at 8.4 GHz…