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JWST Photometric Time-Delay and Magnification Measurements for the Triply-Imaged Type Ia "Supernova H0pe" at z = 1.78

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arxiv 2403.18954 v2 pith:SYYPTOQE submitted 2024-03-27 astro-ph.CO

J.D.R. Pierel , B. L. Frye , M. Pascale , G. B. Caminha , W. Chen , S. Dhawan , D. Gilman , M. Grayling
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S. Huber P. Kelly S. Thorp N. Arendse S. Birrer M. Bronikowski R. Canameras D. Coe S. H. Cohen C. J. Conselice S. P. Driver J. C. J. Dsilva M. Engesser N. Foo C. Gall N. Garuda C. Grillo N. A. Grogin J. Henderson J. Hjorth R. A. Jansen J. Johansson P. S. Kamieneski A. M. Koekemoer C. Larison M. A.Marshall L. A. Moustakas M. Nonino R. Ortiz Iii T. Petrushevska N. Pirzkal A. Robotham R. E. Ryan Jr. S. Schuldt L. G. Strolger J. Summers S. H. Suyu T. Treu C. N. A. Willmer R. A. Windhorst H. Yan A. Zitrin A. Acebron S. Chakrabarti D. A. Coulter O. D. Fox X. Huang S. W. Jha G. Li P. A. Mazzali A. K. Meena I. Perez-Fournon F. Poidevin A. Rest A. G. Riess
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keywords h0peimagetimeconstraindelaysdeltajwstmagnification
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abstract

Supernova (SN) H0pe is a gravitationally lensed, triply-imaged, Type Ia SN (SN Ia) discovered in James Webb Space Telescope imaging of the PLCK G165.7+67.0 cluster of galaxies. Well-observed multiply-imaged SNe provide a rare opportunity to constrain the Hubble constant ($H_0$), by measuring the relative time delay between the images and modeling the foreground mass distribution. SN H0pe is located at $z=1.783$, and is the first SN Ia with sufficient light curve sampling and long enough time delays for an $H_0$ inference. Here we present photometric time-delay measurements and SN properties of SN H0pe. Using JWST/NIRCam photometry we measure time delays of $\Delta t_{ab}=-116.6^{+10.8}_{-9.3}$ and $\Delta t_{cb}=-48.6^{+3.6}_{-4.0}$ observer-frame days relative to the last image to arrive (image 2b; all uncertainties are $1\sigma$), which corresponds to a $\sim5.6\%$ uncertainty contribution for $H_0$ assuming $70 \rm{km s^{-1} Mpc^{-1}}$. We also constrain the absolute magnification of each image to $\mu_{a}=4.3^{+1.6}_{-1.8}$, $\mu_{b}=7.6^{+3.6}_{-2.6}$, $\mu_{c}=6.4^{+1.6}_{-1.5}$ by comparing the observed peak near-IR magnitude of SN H0pe to the non-lensed population of SNe Ia.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Forecast of gravitationally lensed Type Ia supernovae time delay measurement by Muztage-Ata 1.93m Synergy Telescope

    astro-ph.GA 2025-01 conditional novelty 6.0 of 10

    MOST could measure strong-lens time delays of Type Ia supernovae to within a few hours at a 2-day cadence, based on simulated CSST-discovered systems.

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