Capability of Searching for Kilonova Associated with a Short Gamma-Ray Burst by SVOM

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外文摘要：In spite of the importance of studying the cosmic generation of heavy elements through the r-process,the detection of a kilonova resulting from the merger of a neutron star binary is still a challenging task.In this paper,we show that the Visible Telescope(VT)onboard the ongoing SVOM space mission is powerful for identifying kilonova candidates associated with short gamma-ray bursts up to a distance of 600 Mpc.A significant color variation,turning blue and then turning red,is revealed by calculating the light curves in both red and blue channels of VT by a linear combination of an afterglow and an associated kilonova.The maximum color variation is as high as～0.5-1 mag,which is far larger than the small photometry error of～0.2 mag of VT for a point source with a brightness of 23 mag.Up to a distance of 600 Mpc,～1-2 kilonova candidates per year are predicted to be identified by VT.

外文关键词：

instrumentation:photometerstelescopesstars:neutron(stars:)gamma-ray burst:general

作者：

J.Wang、L.P.Xin、Y.L.Oiu、L.Lan、W.J.Xie、Z.P.Jin、J.Y.Wei

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作者单位：

Key Laboratory of Space Astronomy and Technology,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

Guangxi Key Laboratory for Relativistic Astrophysics,School of Physical Science and Technology,Nanning 530004,China

Key Laboratory of Dark Matter and Space Astronomy,Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210023,China

出版年：

2024

DOI：

10.1088/1674-4527/ad7fb5

天文和天体物理学研究

中国科学院国家天文台

天文和天体物理学研究

CSTPCD

影响因子：0.406

ISSN：1674-4527

年,卷(期)：2024.24(11)