Periodicity Search on X-ray Bursts of SGR J1935+2154 Using 8.5 yr of Fermi/GBM Data. (arXiv:2107.03800v4 [astro-ph.HE] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Zou_J/0/1/0/all/0/1">Jin-Hang Zou</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhang_B/0/1/0/all/0/1">Bin-Bin Zhang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhang_G/0/1/0/all/0/1">Guo-Qiang Zhang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Yang_Y/0/1/0/all/0/1">Yu-Han Yang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Shao_L/0/1/0/all/0/1">Lang Shao</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wang_F/0/1/0/all/0/1">Fa-Yin Wang</a>
We performed a systematic search for X-ray bursts of the SGR J1935+2154 using
the Fermi Gamma-ray Burst Monitor continuous data dated from Jan 2013 to
October 2021. Eight bursting phases, which consist of a total of 353 individual
bursts, are identified. We further analyze the periodic properties of our
sample using the Lomb-Scargle periodogram. The result suggests that those
bursts exhibit a period of ~ 238 days with a ~ 63.2% duty cycle. Based on our
analysis, we further predict two upcoming active windows of the X-ray bursts.
Since July 2021, the beginning date of our first prediction has been confirmed
by the ongoing X-ray activities of the SGR J1935+2154.
We performed a systematic search for X-ray bursts of the SGR J1935+2154 using
the Fermi Gamma-ray Burst Monitor continuous data dated from Jan 2013 to
October 2021. Eight bursting phases, which consist of a total of 353 individual
bursts, are identified. We further analyze the periodic properties of our
sample using the Lomb-Scargle periodogram. The result suggests that those
bursts exhibit a period of ~ 238 days with a ~ 63.2% duty cycle. Based on our
analysis, we further predict two upcoming active windows of the X-ray bursts.
Since July 2021, the beginning date of our first prediction has been confirmed
by the ongoing X-ray activities of the SGR J1935+2154.
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