Assertion: supernova's brightness | /r/HasProperty | the limit
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Source sentences:
text: Ph.D. candidate Tuguldur Sukhbold from the University of California, Santa Cruz, and his supervisor Stan Woosley, think that a brightness 6 trillion times that of the Sun – 10 times the measured brightness of ASASSN-15lh – is the limit for so-called super-luminous supernovae (SLSNs).