Hard X-ray Emission from the NGC 5044 Group

Hard X-ray photon index as an indicator of bolometric correction in active galactic nuclei

Harmonic Gravitational Wave Spectra of Cosmic String Loops in the Galaxy

Haro15: Is it actually a low metallicity galaxy?

Harrison-Z'eldovich primordial spectrum is consistent with observations

Have Baryonic Acoustic Oscillations in the galaxy distribution really been measured?

HD and H2 formation in low-metallicity dusty gas clouds at high redshift

HD molecules at high redshift: The absorption system at z=2.3377 towards Q 1232+082

HD/H2 Molecular Clouds in the Early Universe: The Problem of Primordial Deuterium

He II Lyβ Gunn-Peterson Absorption: New HST Observations, and Theoretical Expectations

Heating and Cooling in Clusters and Groups

Heating and enriching the intracluster medium

Heating Cluster Gas

Heating the hot atmospheres of galaxy groups and clusters with cavities: the relationship between jet power and low-frequency radio emission

Heavily Obscured AGN in High Redshift Luminous Infrared Galaxies

Heavily Obscured AGN in Star-Forming Galaxies at z~2

Heavily obscured AGN in the local Universe

Heavily Reddened Quasars at z~2 in the UKIDSS Large Area Survey: A Transitional Phase in AGN Evolution

Heavy sterile neutrinos, entropy and relativistic energy production, and the relic neutrino background

HeII emission in Lyman-alpha nebulae: AGN or cooling radiation?