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- Kemdikbud - Penomoran Ijazah dan Sertifikat Nasional
Portal Penomoran dan atau verifikasi Ijazah dan Sertifikat Profesi Nasional yang terintegrasi dengan Pangkalan Data Pendidikan Tinggi (PDDikti) Dikelola oleh Direktorat Pembelajaran dan Kemahasiswaan, Direktorat Jenderal Pendidikan Tinggi, Kemdiktisaintek RI
- Pair-instability supernova - Wikipedia
When a star is very massive, the gamma rays produced in its core can become so energetic that some of their energy is drained away into production of particle and antiparticle pairs The resulting drop in radiation pressure causes the star to partially collapse under its own huge gravity
- PISN-explorer: hunting the descendants of very massive first . . .
Still, despite long searches, the stellar descendants of PISN remain elusive Here we propose a new methodology, the PISN-explorer, to identify candidates for stars with a dominant PISN enrichment
- A metal-poor star with abundances from a pair-instability . . .
The very massive first-generation stars with a mass range from 140 to 260 solar masses are predicted to enrich the early interstellar medium through pair-instability supernovae (PISNe) 5
- What Is a Pair-Instability Supernova or a PISN? - HubPages
We have yet to determine a definite positive, but we do have candidates in line that could possibly be PISN SN 2007bi is one of these, with a host galaxy located 1 billion light-years away in a young dwarf galaxy
- PISN-explorer:hunting the descendants of very massive first sta
stars showing 100% PISN enrichment has thus not proven successful Rather, a large fraction of PISN descendants are expected to also have a significant contribution from normal Pop II stars, which can form early on in the Pop I
- Researchers find evidence for a Pair-instability Supernova . . .
PISNe disrupt the entire star, leaving no remnant A PISN explosion can be from a few up to a hundred times more powerful than a “normal” supernova The explosion that made J1010+2358 was among the most energetic PISNe
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