Narlikar, J. V.Apparao, K. M. V.2012-03-092012-03-091975-01-01http://hdl.handle.net/11007/1119The role of exploding objects in high-energy astrophysics is discussed. Quantitative results are obtained for the simple case of the canonical white hole which explodes from a singularity and consists of pressure-free matter in the comoving frame of reference. General relativity is used for calculating the dynamical results. Applications to X-ray background, transient X-ray sources, gamma-ray bursts, and high energy cosmic rays are considered. White holes of more general types are discussed in a qualitative manner.enWhite holesHigh energyAstrophysicsRelativityX-Rays sourcesCosmic raysCosmologyLight transmissionMonochromatic radiationArticle