An all-sky map of half a million supermassive black holes
APACHE POINT OBSERVATORY, NM & LAS CAMPANAS OBSERVATORY, CHILE — The Sloan Digital Sky Survey (SDSS) announces Data Release 20 (DR20), marking a landmark expansion in the study of accreting supermassive black holes (SMBHs). As part of the fifth generation of the survey (SDSS-V), the Black Hole Mapper (BHM) program is providing unprecedented insights into the masses, growth, and physics of quasars and active galactic nuclei (AGN) across cosmic time. Sky distribution of DR20 astronomical objects targeted by the Black Hole Mapper (BHM) program in SDSS-V.
- ▪APACHE POINT OBSERVATORY, NM & LAS CAMPANAS OBSERVATORY, CHILE — The Sloan Digital Sky Survey (SDSS) announces Data Release 20 (DR20), marking a landmark expansion in the study of accreting supermassive black holes (SMBHs).
- ▪As part of the fifth generation of the survey (SDSS-V), the Black Hole Mapper (BHM) program is providing unprecedented insights into the masses, growth, and physics of quasars and active galactic nuclei (AGN) across cosmic time.
- ▪Sky distribution of DR20 astronomical objects targeted by the Black Hole Mapper (BHM) program in SDSS-V.
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| Original publisher | SDSS - Mapping the Universe |
| Canonical URL | https://www.sdss.org/black-hole-mapper-release-20/ |
| Publication time | Fri, 07 Aug 2026 15:24:53 +0000 |
| Retrieval time | 2026-08-07T18:05:41.845Z |
| Last seen | 2026-08-07T18:05:41.845Z |
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Posted in: News Releases Mapping Monsters: SDSS-V Data Release 20 Unveils All-Sky Views of Supermassive Black Holes July 30, 2026July 31, 2026 The Black Hole Mapper reaches a milestone with its first southern hemisphere optical observations, coordinated eROSITA X-ray identification, and multi-epoch tracking of accreting black holes across the universe. APACHE POINT OBSERVATORY, NM & LAS CAMPANAS OBSERVATORY, CHILE — The Sloan Digital Sky Survey (SDSS) announces Data Release 20 (DR20), marking a landmark expansion in the study of accreting supermassive black holes (SMBHs).
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