An optical search for transients lasting a few seconds
An optical search for transients lasting a few seconds
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DOI：
10.1093/pasj/psz120
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发表时间：
2019-10
影响因子：
2.3
通讯作者：
M. Richmond;Masaomi Tanaka;T. Morokuma;S. Sako;R. Ohsawa;Noriaki Arima;N. Tominaga;M. Doi;T. Aoki;K. Arimatsu;M. Ichiki;Shiro Ikeda;Y. Ita;T. Kasuga;K. Kawabata;H. Kawakita;N. Kobayashi;M. Kokubo;M. Konishi;H. Maehara;H. Mito;T. Miyata;Y. Mori;M. Morii;K. Motohara;Y. Nakada;S. Okumura;H. Onozato;Y. Sarugaku;Mikiya Sato;T. Shigeyama;T. Soyano;H. Takahashi;A. Tanikawa;K. Tarusawa;S. Urakawa;F. Usui;J. Watanabe;T. Yamashita;M. Yoshikawa
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文献类型：
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作者：
M. Richmond;Masaomi Tanaka;T. Morokuma;S. Sako;R. Ohsawa;Noriaki Arima;N. Tominaga;M. Doi;T. Aoki;K. Arimatsu;M. Ichiki;Shiro Ikeda;Y. Ita;T. Kasuga;K. Kawabata;H. Kawakita;N. Kobayashi;M. Kokubo;M. Konishi;H. Maehara;H. Mito;T. Miyata;Y. Mori;M. Morii;K. Motohara;Y. Nakada;S. Okumura;H. Onozato;Y. Sarugaku;Mikiya Sato;T. Shigeyama;T. Soyano;H. Takahashi;A. Tanikawa;K. Tarusawa;S. Urakawa;F. Usui;J. Watanabe;T. Yamashita;M. Yoshikawa
利用Tomo-e Gozen宽视场CMOS马赛克相机的原型，我们以$2\:$Hz的节奏获取宽视场光学图像，并搜索持续时间为1.5到$11.5\:$s的瞬态光源。在八个晚上的过程中，我们的调查涵盖了大约相当于一个平方度两天的影响，其影响相当于1-s暴露的极限幅度约为$V = 15.6$。通过对软件管道识别的候选资源进行肉眼检查后，我们没有发现符合我们所有标准的资源。我们计算了与我们的调查相一致的光瞬态速率的上限，并将其与短暂光的代表性光源的预期和观测速率进行了比较。
Using a prototype of the Tomo-e Gozen wide-field CMOS mosaic camera, we acquire wide-field optical images at a cadence of $2\:$Hz and search them for transient sources of duration 1.5 to $11.5\:$s. Over the course of eight nights, our survey encompasses the equivalent of roughly two days on one square degree, to a fluence equivalent to a limiting magnitude of about $V = 15.6$ in a 1-s exposure. After examining by-eye the candidates identified by a software pipeline, we find no sources which meet all our criteria. We compute upper limits to the rate of optical transients consistent with our survey, and compare those to the rates expected and observed for representative sources of ephemeral optical light.