265 citations · 2k across the 53 of their papers we have counts for
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The morphology of the ejecta of SN 1987A at 31 years from 1150 to 10000 Å
Tuomas Kangas, Claes Fransson, Josefin Larsson +7
We present spectroscopy of the ejecta of SN 1987A in 2017 and 2018 from the Hubble Space Telescope and the Very Large Telescope, covering the wavelength range between and $1…
Automated algorithms to build Active Galactic Nuclei classifiers
Serena Falocco, Francisco J. Carrera, Josefin Larsson
We present a machine learning model to classify Active Galactic Nuclei (AGN) and galaxies (AGN-galaxy classifier) and a model to identify type 1 (optically unabsorbed) and type 2 (…
Clumps and rings of ejecta in SNR 0540-69.3 as seen in 3D
J. Larsson, J. Sollerman, J. D. Lyman +4
The distribution of ejecta in young supernova remnants offers a powerful observational probe of their explosions and progenitors. Here we present a 3D reconstruction of the ejecta…
Thermal Emission and Radioactive Lines, but No Pulsar, in the Broadband X-Ray Spectrum of Supernova 1987A
Dennis Alp, Josefin Larsson, Claes Fransson
Supernova 1987A offers a unique opportunity to study an evolving supernova in unprecedented detail over several decades. The X-ray emission is dominated by interactions between the…
A comprehensive view of blackbody components in the X-ray spectra of GRBs
Vlasta Valan, Josefin Larsson
A small fraction of gamma-ray bursts (GRBs) exhibit blackbody emission in the X-ray spectra, the origin of which is debated. In order to gain a more complete understanding of this…