Assertion: black hole's mass | /r/HasProperty | measured in quasar
Facets:
value: by using reverberation mapping
type: MANNER
Source sentences:
text: Huge central masses (106 to 109 solar masses) have been measured in quasars.
text: Huge central masses (106 to 109 solar masses) have been measured in quasars.
text: Huge central masses (106 to 109 solar masses) have been measured in quasars.
text: Central masses of 105 to 109 solar masses have been measured in quasars by using reverberation mapping.