We report the discovery of MAGAZ3NE J095924+022537, a spectroscopically confirmed protocluster at
The existence of black holes (BHs) with masses in the range between stellar remnants and supermassive BHs has only recently become unambiguously established. GW190521, a gravitational wave signal detected by the LIGO/Virgo Collaboration, provides the first direct evidence for the existence of such intermediate-mass BHs (IMBHs). This event sparked and continues to fuel discussion on the possible formation channels for such massive BHs. As the detection revealed, IMBHs can form via binary mergers of BHs in the “upper mass gap” (≈40–120
- Award ID(s):
- 2001751
- Publication Date:
- NSF-PAR ID:
- 10382683
- Journal Name:
- The Astrophysical Journal
- Volume:
- 940
- Issue:
- 2
- Page Range or eLocation-ID:
- Article No. 131
- ISSN:
- 0004-637X
- Publisher:
- DOI PREFIX: 10.3847
- Sponsoring Org:
- National Science Foundation
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