Strong NIR Flare in B21144+40

Astronomy and Astrophysics – Astronomy

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Radio, Millimeter, Infra-Red, Optical, Gamma Ray, Tev, Vhe, Request For Observations, Agn, Blazar, Quasar

Scientific paper

After our report (ATel #3347) of recent NIR activity in B21144+40, a z-1.088 QSO also known as CGRaBS J1146+3958, we have follow the luminosity evolution of this object, and we report now a fast increase in flux in a eight day period. On JD2455693.717975, we determined its flux to correspond to H = 13.439 ± 0.05, while on JD2455701.794745, the flux was 12.269 ± 0.05. That is an increase of a factor of 3 in a short period of time.

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