In some events,weak fast solar bursts (near the level of the quiet Sun) were observed in the background of numerous spikes in emission and absorption.In such a
In recent years it has become clear that the Milky Way is an important testing ground for theories of galaxy formation. Much of this growth has been driven by l
The steady equilibrium conditions for a mixed gas of neutrons, protons, electrons, positrons and radiation fields (abbreviated as npe± gas) with or without
We test the distance-duality(DD) relation by combining the angular diameter distance DA provided by two galaxy cluster samples compiled by De Filippis et al.(th