Hard fast X-ray transients as possible counterparts of unidentified MeV/TeV sources

Hard X-ray Bursts from Collapse of the Super Massive Stars

Hard X-ray Bursts Recorded by the IBIS Telescope of the INTEGRAL Observatory in 2003-2009

Hard X-ray emission from accretion shocks around galaxy clusters

Hard X-ray flux from low-mass stars in the Cygnus OB2 Association

Hard X-ray identification of Eta Carinae and steadiness close to periastron

Hard X-ray spectral variability of the brightest Seyfert AGN in the Swift/BAT sample

Hard X-ray timing and spectral characteristics of the energetic pulsar PSR J0205+6449 in supernova remnant 3C58

Hard X-ray Variability of the Brightest Swift/BAT AGN

Hardness as a Spectral Peak Estimator for Gamma-Ray Bursts

Have Cherenkov telescopes detected a new light boson?

Have neutron stars a dark matter core?

HD 259440: The Proposed Optical Counterpart of the gamma-ray Binary HESS J0632+057

He star evolutionary channel to intermediate-mass binary pulsar PSR J1802-2124

He-like ions as practical astrophysical plasma diagnostics: From stellar coronae to active galactic nuclei

Head-on collisions of binary white dwarf--neutron stars: Simulations in full general relativity

Heavy Nuclei Synthesized in Gamma-Ray Burst Outflows as the Source of UHECRs

Helium Ignition on Accreting Neutron Stars with a New Triple-alpha Reaction Rate

Helium star evolutionary channel to super-Chandrasekhar mass type Ia supernovae

Helium White Dwarfs in Cataclysmic Variables