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

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

来源：

Arxiv

英文摘要

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.

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

作者单位：

DOI：10.3847/1538-4357/ad3c43

学科分类：天文学

推荐引用：M. Pascale,J. Hjorth,R. A. Windhorst,C. Gall,G. B. Caminha,R. A. Jansen,D. Gilman,N. A. Grogin,P. S. Kamieneski,J. Henderson,N. Foo,G. Li,X. Huang,A. G. Riess,S. Schuldt,A. K. Meena,R. Canameras,S. Thorp,S. P. Driver,W. Chen,B. L. Frye,P. Kelly,M. Grayling,S. Chakrabarti,S. Dhawan,L. A. Moustakas,C. Grillo,N. Pirzkal,M. Engesser,J. Summers,D. Coe,I. Perez-Fournon,P. A. Mazzali,A. M. Koekemoer,C. J. Conselice,F. Poidevin,S. W. Jha,L. G. Strolger,J. C. J. Dsilva,A. Zitrin,M. Nonino,R. Ortiz Iii,A. Robotham,N. Arendse,D. A. Coulter,H. Yan,S. Birrer,S. Huber,T. Petrushevska,A. Rest,J. D. R. Pierel,R. E. Ryan, Jr.,O. D. Fox,C. Larison,M. Bronikowski,M. A. Marshall,A. Acebron,S. H. Cohen,J. Johansson,T. Treu,S. H. Suyu,N. Garuda,C. N. A. Willmer.JWST Photometric Time-Delay and Magnification Measurements for the Triply-Imaged Type Ia "Supernova H0pe" at z = 1.78[EB/OL].(2024-03-27)[2025-08-10].https://arxiv.org/abs/2403.18954.点此复制

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

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

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