Key facts
- Category
- Black holes
- Object class
- Intermediate-mass black hole
- Host
- NGC 4395
- Scale fact
- 59,000 kmevent horizon diameter
- Mass
- ~10,000 solar masses
59,000 kmevent horizon diameter
Details
The black hole in NGC 4395 powers an active galactic nucleus inside a small bulgeless galaxy. Its existence helped show that a galaxy does not need a large central bulge to host a feeding central black hole.
Reverberation measurements of the active nucleus in NGC 4395 indicate a black hole of roughly 10,000 solar masses. Its host is a dwarf spiral without a conventional central bulge, showing that an actively feeding nuclear black hole can exist outside the large, bulge-dominated galaxies in which such objects are easiest to find.
Key facts
Links
Size neighbors
Sources
Measurements and descriptive context are compiled by the Scale of Space team from the references below. If you find an error, please let us know.
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About
Scale of Space is a scroll-based journey through the universe, placing objects on a single logarithmic scale so you can compare size across an unbroken range.
Guides explain selected parts of that range, while focused views filter the objects by subject.