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43 papers · 2 filters
Blazar spectral variability as explained by a twisting inhomogeneous jet
C. M. Raiteri, M. Villata
Blazar emission is dominated by non-thermal radiation from a relativistic jet pointing toward us, therefore undergoing Doppler beaming. This is responsible for flux enhancement and…
THESEUS: a key space mission concept for Multi-Messenger Astrophysics
G. Stratta, R. Ciolfi, L. Amati +55
The recent discovery of the electromagnetic counterpart of the gravitational wave source GW170817, has demonstrated the huge informative power of multi-messenger observations. Duri…
Discovery of 105 Hz coherent pulsations in the ultracompact binary IGR J16597-3704
A. Sanna, A. Bahramian, E. Bozzo +15
We report the discovery of X-ray pulsations at 105.2 Hz (9.5 ms) from the transient X-ray binary IGR J16597-3704 using NuSTAR and Swift. The source was discovered by INTEGRAL in th…
Optical, near-IR and -ray observations of SN 2015J and its host galaxy
A. A. Nucita, F. De Paolis, R. Saxton +7
SN 2015J was discovered on April 27th 2015 and is classified as a type IIn supernova. At first, it appeared to be an orphan SN candidate, i.e. without any clear identification of i…
A universal relation for the propeller mechanisms in magnetic rotating stars at different scales
Sergio Campana, Luigi Stella, Sandro Mereghetti +1
Accretion of matter onto a magnetic, rotating object can be strongly affected by the interaction with its magnetic field. This occurs in a variety of astrophysical settings involvi…
Discovery of periodic dips in the brightest hard X-ray source of M31 with EXTraS
M. Marelli, A. Tiengo, A. De Luca +9
We performed a search for eclipsing and dipping sources in the archive of the EXTraS project - a systematic characterization of the temporal behaviour of XMM-Newton point sources.…