J. Johansson

activity

20142026

most citedDiversity in extinction laws of Type Ia supernovae measured between

0.2

and

2 μ m

104 citations · 235 across the 10 of their papers we have counts for

collaborators

Showing 2026Show all

2 papers · 1 filter

astro-ph.CO2026

A Natural $≳ 100 \times$ Telescope: Discovery of the Strongly Lensed Type II SN 2025mkn at $z = 1.37$

Cameron Lemon, Ariel Goobar, Joel Johansson +90

We present the discovery of SN 2025mkn, a gravitationally lensed Type II supernova. First detected as a blue transient in ZTF, 0.83 $^{''}$ from a $z = 0.42$ elliptical gala…

astro-ph.HE2026★ 1 cited

Lightcurve Modelling of 2,205 ZTF DR2 Type~Ia Supernovae: Implications for SN Ia Physics and Cosmology

Nikhil Sarin, Ellen Lindsjö, Lisa Kelsey +11

We fit the multi-band light curves of 2,205 Type Ia supernovae (SNe~Ia) from the Zwicky Transient Facility DR2 with a one-zone radioactive decay model with a phenomenological addit…

A Natural ≳100× Telescope: Discovery of the Strongly Lensed Type II SN 2025mkn at z=1.37

Lightcurve Modelling of 2,205 ZTF DR2 Type~Ia Supernovae: Implications for SN Ia Physics and Cosmology

A Natural $≳ 100 \times$ Telescope: Discovery of the Strongly Lensed Type II SN 2025mkn at $z = 1.37$