Jussi Harmanen

TL;DR: Observations and physical modelling of a rapidly fading electromagnetic transient in the galaxy NGC 4993, which is spatially coincident with GW170817, indicate that neutron-star mergers produce gravitational waves and radioactively powered kilonovae, and are a nucleosynthetic source of the r-process elements.

TL;DR: In this article, the sky localization of the first observed compact binary merger is presented, where the authors describe the low-latency analysis of the LIGO data and present a sky localization map.

TL;DR: In this paper, the authors show that a star with the same mass as the Sun could be disrupted outside the event horizon if the black hole were spinning rapidly, and the rapid spin and high black hole mass can explain the high luminosity of this event.

TL;DR: In this paper, the authors present observations of SN 2015bn, a Type I superluminous supernova (SLSN) at redshift z = 0.1136, and derive physical properties including the bolometric luminosity and non-monotonic temperature and radial evolution.

TL;DR: In this paper, the authors show that a star with the same mass as the Sun could be disrupted outside the event horizon if the black hole were spinning rapidly, and the rapid spin and high black hole mass can explain the high luminosity of this event.