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Image of a lensed galaxy cluster, blow up image shows lensed arc of a galaxy three bright spots, a supernova. NIRCam in G165 shows: 3 bright point sources parity-flipped w.r.t. Arc-2: Clear SN-la at z=1.783! (LBT, NIRSpec; Polletta, 2023, A&AL, 675, L4; astro-ph/2306.12385); ® 3-epoch G165: 9 data-point light-curve! — suitable to measure Hj at z=1.783 (Frye+23; Chen+23: Foo123; Pascale+23: Pierel+23); — Regular monitoring of clusters with extreme SF can yield more lensed SNe! e Total SFR~200-350 M /yr should give a lensed SN every few years.

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Image of a lensed galaxy cluster, blow up image shows lensed arc of a galaxy three bright spots, a supernova. NIRCam in G165 shows: 3 bright point sources parity-flipped w.r.t. Arc-2: Clear SN-la at z=1.783! (LBT, NIRSpec; Polletta, 2023, A&AL, 675, L4; astro-ph/2306.12385); ® 3-epoch G165: 9 data-point light-curve! — suitable to measure Hj at z=1.783 (Frye+23; Chen+23: Foo123; Pascale+23: Pierel+23); — Regular monitoring of clusters with extreme SF can yield more lensed SNe! e Total SFR~200-350 M /yr should give a lensed SN every few years.
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Kelly Lepo (kellylepo@astrodon.social)'s status on Wednesday, 13-Sep-2023 01:42:03 JST Kelly Lepo
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Neat results from Rogier Windhorst from JWST PEARLS.
A type Ia supernova at a redshift of z=1.783 (about 3.7 billion years ago) showed up as multiple images in a galaxy warped by gravitational lensing.
Webb's first deep field, SMACS 0723, is rather close to the Magellanic clouds, so there are more stars in the foreground from the Magellanic stream than an area of the sky 180 degrees away.
#JWSTYearOne

In conversation about a year ago from astrodon.social permalink