Recurrent Nova U Sco Has Sharp Decline in X-ray/UV/Optical/IR

Details Recurrent Nova U Sco Has Sharp Decline in X-ray/UV/Optical/IR Recurrent Nova U Sco Has Sharp Decline in X-ray/UV/Optical/IR

Mar 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2477....1s&link_type=abstract

The Astronomer's Telegram, #2477

Astronomy and Astrophysics

Astronomy

3

Infra-Red, Optical, Ultra-Violet, X-Ray, Novae

Scientific paper

U Sco is a recurrent nova with a fast decline leveling off to a plateau in the optical light curve (IAUC #9111, ATEL #2452), and it has become visible as a super-soft source (SSS) at the start of the plateau phase (ATEL #2430, ATEL #2442). Here, we report that the plateau phase has ended and the brightness of U Sco is fast falling in the UV/optical/IR bands. The flux during the plateau did not vary greatly up until 1 March, when all bands (X-ray to IR) started to smoothly turn over and began fading with an accelerating rate.

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