1E 1415.6+2557 - an X-ray-selected BL Lacertae object in a luminous galaxy

1E 1547.0-5408: a radio-emitting magnetar with a rotation period of 2 seconds

1E 1740.7-2942: temporal and spectral evolution from INTEGRAL and RXTE observations

1E0657-56: A Contender for the Hottest Known Cluster of Galaxies

1E1207.4-5209 - a Unique Object

1E161348-5055 in the Supernova Remnant RCW 103: A Magnetar in a Young Low Mass Binary System?

1ES 0229+200: An extreme blazar with a very high minimum Lorentz factor

1ES 1741+196: a BL Lacertae object in a triplet of interacting galaxies?

1ES 1927+654: Persistent and rapid X-ray variability in an AGN with low intrinsic neutral X-ray absorption and narrow optical emission lines

1Gyr in the Life of the Globular Cluster NGC 6397

1H 0709-360 - A cataclysmic variable with an orbital period inside the 'period gap'

1H 1752+081: A new eclipsing probable AM Herculis type binary

1H0419-577: A "two-state" soft X-ray Seyfert galaxy

1H0419-577: a two-state Seyfert Galaxy?

1H0707-495 in 2011: An X-ray source within a gravitational radius of the event horizon

1RXS J0629-0335: A New Long-period Cataclysmic Variable

1RXS J184542.4+483134 is a new eclipsing polar

1RXS J214303.7+065419/RBS 1774: A New Isolated Neutron Star Candidate

1RXS J232953.9+062814: A Dwarf Nova with a 64-minute Orbital Period and a Conspicuous Secondary Star

1RXS J232953.9+062814: a New SU UMa Dwarf Nova below the Period Minimum