A new method to map flares in quasars

Atsunori Yonehara, Shin Mlneshige, Yoh Takei, George Chartas, Edwin L. Turner

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Recently, Chartas et al. detected a rapid X-ray flare in the gravitationally lensed, multiple-image quasar RX J0911.4+0551. Dramatic events, such as rapid X-ray flares, are useful for providing high-precision measurements of the time delays between multiple images. In this paper we argue that there is a new possibility for measuring time delays between multiple images of gravitationally lensed quasars and constraining the locations of putative flares that give rise to the intrinsic rapid variabilities of quasars. The realization of these goals, however, cannot be achieved at present because of the limited accuracy of the current measurements. We predict that timing flares with accuracies of the order of a few seconds will be needed to probe the location of the flares. The method that we are proposing will work with better instruments in near future, such as the X-Ray Evolving Universe Spectroscopy Mission.

Original languageEnglish (US)
Pages (from-to)107-115
Number of pages9
JournalAstrophysical Journal
Issue number1 I
StatePublished - Sep 1 2003

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Accretion, accretion disks
  • Cosmological parameters
  • Galaxies: starburst
  • Gravitational lensing
  • Quasars: general
  • Supernovae: general


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