67 citations · 285 across the 11 of their papers we have counts for
11 papers
Hubble Space Telescope images of SN 1987A: Evolution of the ejecta and the equatorial ring from 2009 to 2022
Sophie Rosu, Josefin Larsson, Claes Fransson +9
Supernova (SN) 1987A offers a unique opportunity to study how a spatially resolved SN evolves into a young supernova remnant (SNR). We present and analyze Hubble Space Telescope (H…
Emission lines due to ionizing radiation from a compact object in the remnant of Supernova 1987A
C. Fransson, M. J. Barlow, P. J. Kavanagh +31
The nearby Supernova 1987A was accompanied by a burst of neutrino emission, which indicates that a compact object (a neutron star or black hole) was formed in the explosion. There…
JWST NIRSpec observations of Supernova 1987A -- from the inner ejecta to the reverse shock
J. Larsson, C. Fransson, B. Sargent +23
We present initial results from JWST NIRSpec integral field unit observations of the nearby Supernova (SN) 1987A. The observations provide the first spatially-resolved spectroscopy…
Investigating time variability of X-ray absorption in Swift GRBs
Vlasta Valan, Josefin Larsson, Björn Ahlgren
The existence of excess absorption in the X-ray spectra of GRBs is well known, but the primary location of the absorbing material is still uncertain. To gain more knowledge about t…
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…
Three-dimensional distribution of ejecta in Supernova 1987A at 10 000 days
J. Larsson, C. Fransson, J. Spyromilio +19
Due to its proximity, SN 1987A offers a unique opportunity to directly observe the geometry of a stellar explosion as it unfolds. Here we present spectral and imaging observations…