Publications (97)
The 30-Year Search for the Compact Object in SN 1987A
Dennis Alp, Josefin Larsson, Claes Fransson +32
The Diversity of Gamma-Ray Bursts and the Surroundings of Massive Stars
Roger A. Chevalier, Zhi-Yun Li, Claes Fransson
Multi-wavelength Observations of the Enduring Type IIn Supernovae 2005ip and 2006jd
Maximilian Stritzinger, Francesco Taddia, Claes Fransson +19
SN 2023xgo: Helium-rich Type Icn or Carbon-Flash Type Ibn supernova?
Anjasha Gangopadhyay, Jesper Sollerman, Konstantinos Tsalapatas +35
Thermal and non-thermal emission from circumstellar interaction
Roger A. Chevalier, Claes Fransson
Radio Emission and Particle Acceleration in SN 1993J
Claes Fransson, Claes-Ingvar Björnsson
Modeling the X-ray emission of SN 1993J
Tanja K. Nymark, Poonam Chandra, Claes Fransson
The galaxy population of intermediate-redshift clusters
Tomas Dahlen, Claes Fransson, Magnus Naslund +1
The progenitor mass of the Type IIP supernova SN 2004et from late-time spectral modeling
Anders Jerkstrand, Claes Fransson, Kate Maguire +3
Late Spectral Evolution of SN 1987A: I. Temperature and Ionization
Cecilia Kozma, Claes Fransson
Mapping High-velocity H-alpha and Lyman-alpha Emission from Supernova 1987A
Kevin France, Richard McCray, Claes Fransson +12
The Destruction of the Circumstellar Ring of SN 1987A
Claes Fransson, Josefin Larsson, Katia Migotto +23
The 44Ti-powered spectrum of SN 1987A
Anders Jerkstrand, Claes Fransson, Cecilia Kozma
Shock Breakout Emission from a Type Ib/c Supernova: XRT 080109/SN 2008D
Roger A. Chevalier, Claes Fransson
Spectral modelling of Type IIb Supernovae
Mattias Ergon, Claes Fransson
Radio and X-Ray Emission as Probes of Type IIP Supernovae and Red Supergiant Mass Loss
Roger A. Chevalier, Claes Fransson, Tanja K. Nymark
Spectropolarimetry of SN 2001el in NGC 1448: Asphericity of a Normal Type Ia Supernova
Lifan Wang, Dietrich Baade, Peter Hoeflich +6
Supersolar Ni/Fe production in the Type IIP SN 2012ec
Anders Jerkstrand, Stephen J. Smartt, Jesper Sollerman +14
X-Ray and Gamma-Ray Emission From Core-collapse Supernovae: Comparison of Three-dimensional Neutrino-driven Explosions With SN 1987A
Dennis Alp, Josefin Larsson, Keiichi Maeda +7
SN 1998bw at late phases
Jesper Sollerman, Cecilia Kozma, Claes Fransson +4
Late-Time HST Photometry of SN 1994I: Hints of Positron Annihilation Energy Deposition
Alejandro Clocchiatti, J. Craig Wheeler, Robert P. Kirshner +12
Supernova Interaction with a Dense Detached Shell in SN 2001em
Poonam Chandra, Roger A. Chevalier, Nikolai Chugai +2
A cosmic formation site of silicon and sulphur revealed by a new type of supernova explosion
Steve Schulze, Avishay Gal-Yam, Luc Dessart +47
X-ray emission from radiative shocks in Type II supernovae
Tanja K. Nymark, Claes Fransson, Cecilia Kozma
SN 1987A at the end of its second decade
Karina Kjaer, Per Groeningsson, Rubina Kotak +2
Supernova Interaction with a Circumstellar Medium
Roger A. Chevalier, Claes Fransson
Late Spectral Evolution of the Ejecta and Reverse Shock in SN1987A
Claes Fransson, Josefin Larsson, Jason Spyromilio +10
The outer rings of SN 1987A from year 1994 to 2024: morphology, light curves, and optical to mid-infrared spectra
Sophie Rosu, Elko Gerville-Reache, Steven Thomas +14
Three-dimensional modeling of Type Ia supernovae - The power of late time spectra
Cecilia Kozma, Claes Fransson, Wolfgang Hillebrandt +5
Hubble Space Telescope and Ground-Based Observations of SN 1993J and SN 1998S: CNO Processing in the Progenitors
Claes Fransson, Peter M. Challis, Roger A. Chevalier +13
High Density Circumstellar Interaction in the Luminous Type IIn SN 2010jl: The first 1100 days
Claes Fransson, Mattias Ergon, Peter J. Challis +16
Hydrodynamical modelling of Type IIb SNe
Mattias Ergon, Maximilian Stritzinger, Francesco Taddia +2
The morphology of the ejecta of SN 1987A at 31 years from 1150 to 10000 Ã
Tuomas Kangas, Claes Fransson, Josefin Larsson +7
Type IIb Supernova SN 2011dh: Spectra and Photometry from the Ultraviolet to the Near-Infrared
G. H. "Howie'' Marion, Jozsef Vinko, Robert P. Kirshner +26
X-ray and radio emission from Type IIn supernova SN 2010jl
Poonam Chandra, Roger A. Chevalier, Nikolai Chugai +2
Spectropolarimetry of the Type Ic SN 2002ap in M74: More Evidence for Asymmetric Core Collapse
Lifan Wang, Dietrich Baade, Peter Hoeflich +3
A Low-Mass Helium Star Progenitor Model for the Type Ibn SN 2020nxt
Qinan Wang, Anika Goel, Luc Dessart +55
The Galaxy Population of Cl1601+42 at z=0.54
Tomas Dahlen, Claes Fransson, Magnus Naeslund
1100 days in the life of the supernova 2018ibb -- The best pair-instability supernova candidate, to date
Steve Schulze, Claes Fransson, Alexandra Kozyreva +63
HST Spectroscopy of Spot 1 on the Circumstellar Ring of SN 1987A
Eli Michael, Richard McCray, C. S. J. Pun +15
Tracing the Propagation of Shocks in the Equatorial Ring of SN 1987A Over Decades with the Hubble Space Telescope
Christos Tegkelidis, Josefin Larsson, Claes Fransson
A Wolf in Sheepskin: Extraordinary Supernova 2012au Veiled Behind Ordinary Radio Emission
Atish Kamble, Alicia M. Soderberg, Laura Chomiuk +11
Hydrogen and helium in the spectra of Type Ia supernovae
Peter Lundqvist, Seppo Mattila, Jesper Sollerman +6
Uncovering the Putative B-Star Binary Companion of the SN 1993J Progenitor
Ori D. Fox, K. Azalee Bostroem, Schuyler D. Van Dyk +9
A Missing-Link in the Supernova-GRB Connection: The Case of SN 2012ap
Sayan Chakraborti, Alicia Soderberg, Laura Chomiuk +50
Optical and Ultraviolet Spectroscopy of SN 1995N: Evidence for Strong Circumstellar Interaction
Claes Fransson, Roger A. Chevalier, Alexei V. Filippenko +9
EVLA Observations Constrain the Environment and Progenitor System of Type Ia Supernova 2011fe
Laura Chomiuk, Alicia M. Soderberg, Maxwell Moe +7
Preliminary Spectral Analysis of the Type II Supernova 1999em
E. Baron, David Branch, Peter H. Hauschildt +19
The late-time light curve of the Type Ia supernova 2000cx
Jesper Sollerman, Jan Lindahl, Cecilia Kozma +10
Observations of the Crab Nebula and its pulsar in the far-ultraviolet and in the optical
Jesper Sollerman, Peter Lundqvist, Don Lindler +5
Constraining the physical properties of Type II-P supernovae using nebular phase spectra
Kate Maguire, Anders Jerkstrand, Stephen J. Smartt +6
Evolution of the Reverse Shock Emission from SNR 1987A
Kevin Heng, Richard McCray, Svetozar A. Zhekov +13
High z supernovae with the NGST
Tomas Dahlen, Claes Fransson
Observing Supernova 1987A with the Refurbished Hubble Space Telescope
Kevin France, Richard McCray, Kevin Heng +18
Dust and the type II-plateau supernova 2004et
Rubina Kotak, Peter Meikle, Duncan Farrah +14
Evidence for Type Ia Supernova Diversity from Ultraviolet Observations with the Hubble Space Telescope
Xiaofeng Wang, Lifan Wang, Alexei V. Filippenko +93
High resolution spectroscopy of the line emission from the inner circumstellar ring of SN 1987A and its hot spots
Per Groeningsson, Claes Fransson, Peter Lundqvist +8
Dust and the type II-Plateau supernova 2004dj
Peter Meikle, Rubina Kotak, Duncan Farrah +13
Rates and redshift distribution of high-z supernovae
Tomas Dahlen, Claes Fransson
Lightcurve and spectral modelling of the Type IIb SN 2020acat. Evidence for a strong Ni bubble effect on the diffusion time
Mattias Ergon, Peter Lundqvist, Claes Fransson +10
SN 2017dio: a type-Ic supernova exploding in a hydrogen-rich circumstellar medium
Hanindyo Kuncarayakti, Keiichi Maeda, Christopher J. Ashall +42
Spitzer measurements of atomic and molecular abundances in the Type IIP SN 2005af
Rubina Kotak, Peter Meikle, Monica Pozzo +12
The Nature of the Compact Supernova Remnants in Starburst Galaxies
Roger A. Chevalier, Claes Fransson
Radio and X-rays From SN 2013df Enlighten Progenitors of Type IIb Supernovae
Atish Kamble, Raffaella Margutti, Alicia M. Soderberg +7
Discovery of molecular hydrogen in SN 1987A
Claes Fransson, Josefin Larsson, Jason Spyromilio +3
High angular resolution ALMA images of dust and molecules in the SN 1987A ejecta
Phil Cigan, Mikako Matsuura, Haley L. Gomez +23
The Slow Demise of the Long-Lived SN 2005ip
Ori D. Fox, Claes Fransson, Nathan Smith +16
Spectral and morphological analysis of the remnant of Supernova 1987A with ALMA & ATCA
Giovanna Zanardo, Lister Staveley-Smith, Remy Indebetouw +18
Abundances and density structure of the inner circumstellar ring around SN 1987A
Seppo Mattila, Peter Lundqvist, Per Groeningsson +4
Modelling the Hubble Space Telescope Ultraviolet and Optical Spectrum of Spot 1 on the Circumstellar Ring of SN 1987A
Chun S. J. Pun, Eli Michael, Svetozar A. Zhekov +18
Analysis of the Type IIn Supernova 1998S: Effects of Circumstellar Interaction on Observed Spectra
Eric J. Lentz, E. Baron, Peter Lundqvist +20
Circumstellar Emission from Type Ib and Ic Supernovae
Roger A. Chevalier, Claes Fransson
Evidence for Late-stage Eruptive Mass-loss in the Progenitor to SN2018gep, a Broad-lined Ic Supernova: Pre-explosion Emission and a Rapidly Rising Luminous Transient
Anna Y. Q. Ho, Daniel A. Goldstein, Steve Schulze +47
Infrared Integral Field Spectroscopy of SN 1987A
Karina Kjaer, Bruno Leibundgut, Claes Fransson +3
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
Time evolution of the line emission from the inner circumstellar ring of SN 1987A and its hot spots
Per Groeningsson, Claes Fransson, Bruno Leibundgut +4
Hubble Space Telescope WFPC2 Imaging of SN 1979C and Its Environment
Schuyler D. Van Dyk, Chien Y. Peng, Aaron J. Barth +6
The Zwicky Transient Facility phase I sample of hydrogen-rich superluminous supernovae without strong narrow emission lines
Tuomas Kangas, Lin Yan, Steve Schulze +19
Radio and X-ray observations of SN 2006jd: Another strongly interacting Type IIn supernova
Poonam Chandra, Roger A. Chevalier, Nikolai Chugai +5
Catching Element Formation In The Act
Chris L. Fryer, Frank Timmes, Aimee L. Hungerford +216
JWST NIRCam Observations of SN 1987A: Spitzer Comparison and Spectral Decomposition
Richard G. Arendt, Martha L. Boyer, Eli Dwek +24
Thermal Emission and Radioactive Lines, but No Pulsar, in the Broadband X-Ray Spectrum of Supernova 1987A
Dennis Alp, Josefin Larsson, Claes Fransson
A JWST Survey of the Supernova Remnant Cassiopeia A
Dan Milisavljevic, Tea Temim, Ilse De Looze +43
HST-COS Observations of Hydrogen, Helium, Carbon and Nitrogen Emission from the SN 1987A Reverse Shock
Kevin France, Richard McCray, Steven V. Penton +18
A Deep Search for Prompt Radio Emission from Thermonuclear Supernovae with the Very Large Array
Laura Chomiuk, Alicia M. Soderberg, Roger A. Chevalier +10
Late-Time Optical and UV Spectra of SN 1979C and SN 1980K
Robert A. Fesen, Christopher L. Gerardy, Alexei V. Filippenko +8
X-ray Absorption in Young Core-Collapse Supernova Remnants
Dennis Alp, Josefin Larsson, Claes Fransson +3
Modeling the Radio and X-ray Emission of SN 1993J and SN 2002ap
Claes Fransson, Claes-Ingvar Bjornsson
Coronal emission from the shocked circumstellar ring of SN 1987A
Per Groeningsson, Claes Fransson, Peter Lundqvist +5
SN 2019zrk, a bright SN 2009ip analog with a precursor
Claes Fransson, Jesper Sollerman, Nora L. Strotjohann +12
Radioactivities and nucleosynthesis in SN 1987A
Claes Fransson, Cecilia Kozma
The morphology of the ejecta in Supernova 1987A: a study over time and wavelength
Josefin Larsson, Claes Fransson, Karina Kjaer +9
Late Spectral Evolution of SN 1987A: II. Line Emission
Cecilia Kozma, Claes Fransson
Strong Evolution of X-Ray Absorption in the Type IIn Supernova SN 2010jl
Poonam Chandra, Roger A. Chevalier, Christopher M. Irwin +3
Hubble Space Telescope Spectroscopic Observations of the Ejecta of SN 1987A at 2000 Days
Lifan Wang, J. Craig Wheeler, Robert P. Kirshner +6
Reconciling the infrared catastrophe and observations of SN 2011fe
Claes Fransson, Anders Jerkstrand
High-resolution optical studies of nearby Type Ia supernovae
Peter Lundqvist, Seppo Mattila, Jesper Sollerman +5