SIMBAD references

2019ApJ...871...72M - Astrophys. J., 871, 72-72 (2019/January-3)

The JCMT transient survey: an extraordinary submillimeter flare in the T Tauri binary system JW 566.

MAIRS S., LALCHAND B., BOWER G.C., FORBRICH J., BELL G.S., HERCZEG G.J., JOHNSTONE D., CHEN W.-P., LEE J.-E. and HACAR A.

Abstract (from CDS):

The binary T Tauri system JW 566 in the Orion Molecular Cloud underwent an energetic, short-lived flare observed at submillimeter wavelengths by the SCUBA-2 instrument on 2016 November 26 (UT). The emission faded by nearly 50% during the 31 minute integration. The simultaneous source fluxes averaged over the observation are 500±107mJybeam–1 at 450 µm and 466±47mJybeam–1 at 850 µm. The 850 µm flux corresponds to a radio luminosity of Lν=8×1019ergs–1 Hz–1, approximately one order of magnitude brighter (in terms of νLν) than that of a flare of the young star GMR-A, detected in Orion in 2003 at 3mm. The event may be the most luminous known flare associated with a young stellar object and is also the first coronal flare discovered at submillimeter wavelengths. The spectral index between 450 and 850 µm of α = 0.11 is broadly consistent with nonthermal emission. The brightness temperature was in excess of 6×104K. We interpret this event to be a magnetic reconnection that energized charged particles to emit gyrosynchrotron/synchrotron radiation.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): ISM: jets and outflows - stars: formation - stars: variables: general - surveys

Simbad objects: 9

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2019.12.12-02:35:52

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