First search for extraterrestrial neutrino-induced cascades with IceCube

First simultaneous multi-wavelength observations of the black hole candidate IGR J17091-3624: ATCA, INTEGRAL, Swift, and RXTE views of the 2011 outburst

First Stars -- Type Ib Supernovae Connection

First Very Low Frequency detection of short repeated bursts from magnetar SGR J1550-5418

First VLBI Detection of the Radio Remnant of Supernova 1987A: Evidence for Small-scale Features

First-year Results of Broadband Spectroscopy of the Brightest Fermi-GBM Gamma-Ray Bursts

Five and a half roads to form a millisecond pulsar

Five new INTEGRAL unidentified hard X-Ray sources uncovered by Chandra

Five New Millisecond Pulsars From a Radio Survey of 14 Unidentified Fermi-LAT Gamma-ray Sources

Flare-less long Gamma-ray Bursts and the properties of their massive star progenitors

Flares In Long And Short Gamma Ray Bursts

Flares, Broadening of the Pulse frequency peak, and Quasi Periodic Oscillations in the Transient X-ray Pulsar 4U 1901+03

Flaring Active Galactic Nuclei. The cases of 3C 279 and PMN J0948+0022 as seen by the Fermi-LAT

Flaring Behavior of the Quasar 3C~454.3 across the Electromagnetic Spectrum

Fluctuation of TeV to EeV Energy Muons and Induced Muon Showers in Water

Fluctuations of the depth of maximum in extensive air showers and cross-section of p-air inelastic interaction for energy range 10^15-10^17 eV

Fluid and Magnetofluid Modeling of Relativistic Magnetic Reconnection

Fluorescence emission induced by extensive air showers in dependence on atmospheric conditions

Follow the BAT: Monitoring Swift BAT FoV for Prompt Optical Emission from Gamma-ray Bursts

Following the 2008 outburst decay of the black hole candidate H1743-322 in X-ray and radio