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A 12.4-day periodicity in a close binary system after a supernova

Neutron stars and stellar-mass black holes are the remnants of massive star explosions1. Most massive stars reside in close binary systems2, and the interplay between the companion star and the newly formed compact object has been theoretically explored3, but signatures for binarity or evidence for the formation of a compact object during a supernova explosion are still lacking. Here we report a stripped-envelope supernova, SN 2022jli, which shows 12.4-day periodic undulations during the declining light curve. Narrow Hα emission is detected in late-time spectra with concordant periodic velocity shifts, probably arising from hydrogen gas stripped from a companion and accreted onto the compact remnant. A new Fermi-LAT γ-ray source is temporally and positionally consistent with SN 2022jli. The observed properties of SN 2022jli, including periodic undulations in the optical light curve, coherent Hα emission shifting and evidence for association with a γ-ray source, poin ....

Nordrhein Westfalen , Az Arbayjane Sharqi , United States , Portegies Zwart , Freitas Pacheco , Sloan Digital Sky , Sexten Center , Optical Survey , Zwicky Transient Facility Phase , Astronomical Data Analysis Software , Leiden Argentine Bonn , Nuclear Spectroscopic Telescope Array Nustarx Ray , Keck Infrared Transient Survey , Society Of Photo , X Photometric Survey Telescope , Intermediate Palomar Transient , Discovery Report , Name Server Discovery Report , Early Data Release , Zwicky Transient Facility , Hubble Space Telescope Key Project , Wilkinson Microwave Anisotropy Probe , Hubble Space Telescope , Apache Point Observatory Catalog , Optical Diffuse Interstellar , Open Source Softw ,

talks.cam : Galactic Archaeology with Globular Clusters: does a chemical link exist between globular clusters and their host galaxies

talks.cam : Galactic Archaeology with Globular Clusters: does a chemical link exist between globular clusters and their host galaxies
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Institute Of Astronomy Seminars , Galactic Archaeology , Globular Clusters , Milky Way , Astronomy Seminars ,

Science Fair: Indigenous Science Edition – Bwog

Science Fair: Indigenous Science Edition – Bwog
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New York , United States , Frisco Peak , Pupin Hall , New Mexico , Columbia University , Picuris Pueblo , Michaelg Campbell , Isidorei Benrubi , Curtis Zunigha , John Preskill , Keith Hawkins , Mary Bassett , Katerina Chatziioannou , Joe Baker , Bow Laursen , Geoff Penington , Hadrien Coumans , White Health Disparities , University Of California , High Energy Particle Seminar , Columbia Quantum Initiative Distinguished Speaker , Association Of Professors Human , Ethics Of Public Health More , University Of Texas At Austin , Idea Of The University ,

Astrophysicists find evidence for the presence of the first stars

An international group of researchers, including a professor at the University of Notre Dame, has found evidence for the earliest stars in the universe,. ....

United States , Brucea Peterson , Timothy Beers , Toshikazu Shigeyama , Takuji Tsujimoto , Hiroaki Sameshima , Yuzuru Yoshii , Notre Dame , Australian National University , National Science Foundation , Javalambre Photometric Local Universe Survey , Southern Photometric Local Universe Survey , University Of Notre Dame , University Of Tokyo , University Of Arizona , National Astronomical Observatory Of Japan , Grace Rupley Professor , James Webb Space Telescope , Milky Way , Galactic Archaeology , National Astronomical Observatory , Australian National , Gemini North ,

Six reasons to use Double Helix magazine in your classroom  – CSIRO PUBLISHING

Six reasons to use Double Helix magazine in your classroom – CSIRO PUBLISHING
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Jonathon Ralston , Brickman Mcnaught , Australia National Science Agency , Double Helix , National Science , Torres Strait Islander , Kirsten Banks , Galactic Archaeology , Double Helix Extra ,