Hae
Aineistot 21-27 / 27
Supernovae 2016bdu and 2005gl, and their link with SN 2009ip-like transients: another piece of the puzzle
<p>Supernova (SN) 2016bdu is an unusual transient resembling SN 2009ip. SN
2009ip-like events are characterized by a long-lasting phase of erratic
variability which ends with two luminous outbursts a few weeks apart.
The ...
The double-peaked Type Ic supernova 2019cad: another SN 2005bf-like object
We present the photometric and spectroscopic evolution of supernova (SN) 2019cad during the first similar to 100 d from explosion. Based on the light-curve morphology, we find that SN 2019cad resembles the double-peaked ...
Low-redshift quasars in the SDSS Stripe 82: associated companion galaxies and signature of star formation
We obtained optical spectroscopy of close (< 80 kpc) companion objects of a sample of 12 lowredshift quasars (z < 0.3) selected from the SDSS Stripe82 area and that are in the subsample of 52 QSOs for which both multicolour ...
Insights into the emission of the blazar 1ES 1011+496 through unprecedented broadband observations during 2011 and 2012
Context. 1ES 1011+496 (z = 0.212) was discovered in very high-energy (VHE, E > 100 GeV) gamma rays with MAGIC in 2007. The absence of simultaneous data at lower energies led to an incomplete characterization of the broadband ...
A Search for QPOs in the Blazar OJ287: Preliminary Results from the 2015/2016 Observing Campaign
We analyse the light curve in the <i>R</i> band of the blazar OJ287,
gathered during the 2015/2016 observing season. We did a search for
quasi-periodic oscillations (QPOs) using several methods over a wide
range of ...
Galaxy and Mass Assembly (GAMA): The Weak Environmental Dependence of Quasar Activity at 0.1 < z < 0.35
Understanding the connection between nuclear activity and galaxy environment remains critical in constraining models of galaxy evolution. By exploiting the extensive cataloged data from the Galaxy and Mass Assembly survey, ...
Supernova 2013fc in a circumnuclear ring of a luminous infrared galaxy: the big brother of SN 1998S
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We present photometric and spectroscopic observations of SN 2013fc, a bright type II supernova (SN) in a circumnuclear star-forming ring in the luminous infrared galaxy ESO 154-G010, observed as part of the Public ...