Black Hole in Quantum Wave Dark Matter

Reggie C. Pantig, Ali Övgün

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


In this work, we explored the effect of the fuzzy dark matter (FDM) (or wave dark matter) halo on a supermassive black hole (SMBH). Such a dark matter introduces a soliton core density profile, and we treat it ideally as a spherical distribution that surrounds the SMBH located at its center. In this direction, we obtained a new metric due to the union of the black hole and dark matter spacetime geometries. We applied the solution to the two known SMBH - Sgr. A* and M87* and used the empirical data for the shadow diameter by EHT to constrain the soliton core radius (Formula presented.) given some values of the boson mass (Formula presented.). Then, we examine the behavior of the shadow radius based on such constraints and relative to a static observer. We found that different shadow sizes are perceived at regions (Formula presented.) and (Formula presented.), and the deviation is greater for values (Formula presented.) eV. Concerning the shadow behavior, we have also analyzed the effect of the soliton profile on the thin-accretion disk. Soliton dark matter effects manifest through the varying luminosity near the event horizon. We also analyzed the weak deflection angle and the produced Einstein rings due to soliton effects. We found considerable deviation, better than the shadow size deviation, for the light source near the SMBH with impact parameters comparable to the soliton core. Our results suggest the possible experimental detection of soliton dark matter effects using an SMBH at the galactic centers.

Original languageEnglish
Article number2200164
JournalFortschritte der Physik
Issue number1
StatePublished - Jan 2023
Externally publishedYes


  • black hole shadow
  • dark matter
  • spherical accretion
  • supermassive black holes
  • weak deflection angle


Dive into the research topics of 'Black Hole in Quantum Wave Dark Matter'. Together they form a unique fingerprint.

Cite this