Are there cool-core clusters at high-redshift? Chandra results and prospects with WFXT

Are There Echoes From The Pre-Big Bang Universe? A Search for Low Variance Circles in the CMB Sky

Are There Rotation Measure Gradients Across AGN Jets?

Are we seeing the beginnings of Inflation?

Area spectrum of near-extremal SdS black holes via the new interpretation of quasinormal modes

ARGOT: Accelerated radiative transfer on grids using oct-tree

Arm & Interarm Star Formation in Spiral Galaxies

Arp 299-A: More than "just" a prolific supernova factory

Arp220: extinction and merger-induced star formation

Artificial Wormhole

ART^2 : Coupling Lyman-alpha Line and Multi-wavelength Continuum Radiative Transfer

ASKAP-EMU: Overcoming the challenges of wide deep continuum surveys

ASKI: full-sky lensing map making algorithms

ASOHF: a new adaptive spherical overdensity halo finder

Aspects of Horava-Lifshitz cosmology

Assembly bias and the dynamical structure of dark matter halos

Assembly History and Structure of Galactic Cold Dark Matter Halos

Assembly of Massive Galaxies in a High-z Protocluster

Assembly of the outer Galactic stellar halo in the hierarchical model

Assessing Radiation Pressure as a Feedback Mechanism in Star-Forming Galaxies