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- W2890980096 endingPage "L49" @default.
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- W2890980096 abstract "The recent LIGO event GW170817 is the merger of a double neutron star system with an associated short GRB170817A with $2.9pm0.3$,s soft emission over 8-70,keV. This association has a Gaussian equivalent level of confidence of 5.1$sigma$. The merger produced a hyper-massive neutron star of stellar mass black hole with prompt or continuous energy output powering GRB170817A. {Here, we report on a possible detection of} Extended Emission (EE) in gravitational radiation {em during} GRB170817A: a descending chirp with characteristic time scale $tau_s=3.01pm0.2,$s in a (H1,L1)-spectrogram up to 700,Hz with {Gaussian equivalent level of confidence greater than 3.3$sigma$ based on causality alone following edge detection applied to (H1,L1)-spectrograms merged by frequency coincidences. Additional confidence derives from the strength of this EE.} The observed frequencies below 1kHz indicate a hyper-massive magnetar rather than a black hole, spinning down by magnetic winds and interactions with dynamical mass ejecta." @default.
- W2890980096 created "2018-09-27" @default.
- W2890980096 creator A5039189637 @default.
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- W2890980096 date "2018-09-04" @default.
- W2890980096 modified "2023-10-14" @default.
- W2890980096 title "Observational evidence for extended emission to GW170817" @default.
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- W2890980096 doi "https://doi.org/10.1093/mnrasl/sly166" @default.
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