The Swift/Burst Alert Telescope (BAT) hard X-ray transient monitor provides near real-time coverage of the X-ray sky in the energy range 15-50 keV. The BAT observes 88% of the sky each day with a detection sensitivity of 5.3 mCrab for a full-day …
We report the discovery by the Swift hard X-ray monitor of the transient source Swift J2058.4+0516 (Sw J2058+05). Our multi-wavelength follow-up campaign uncovered a long-lived (duration >åisebox-0.5ex months), luminous X-ray (L $_X, iso$ ≈ 3 × …
We present the discovery and characterization of PTF10iya, a short-lived (Δt≈ 10 d, with an optical decay rate of ̃0.3 mag d$^-1$), luminous (? mag) transient source found by the Palomar Transient Factory. The ultraviolet/optical spectral energy …