The mass of the black hole in RE J1034+396

Understand

The black hole mass measurement in active galaxies is a challenge, particularly in sources where the reverberation method cannot be applied.

• We aim to determine the black hole mass in a very special object, RE J1034+396, one of the two AGN with QPO oscillations detected in X-rays, and a single bright AGN with optical band totally dominated by starlight.
• We fit the stellar content using the code starlight, and the broad band disk contribution to optical/UV/X-ray emission is modeled with optxagnf.
• We also determine the black hole mass using several other independent methods.