Site selection for the second Flyeye telescope: A simulation study for optimizing near-earth object discovery

IF 2.5 2区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS
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Abstract

The European Space Agency (ESA) is developing a network of wide-field survey telescopes, named Flyeye, to improve the discovery of Near-Earth Objects (NEOs). The first telescope in the network will be located in the Northern Hemisphere on Mount Mufara (Italy), and a second Flyeye telescope, featuring increased detection capabilities, has just started the critical design phase.

The potential location for the second Flyeye telescope is investigated by performing simulations of NEOs on impacting trajectories. Approximately 3000 impacting asteroids of two absolute magnitudes (H = 25 and H = 28) were propagated and tested for detectability by major existing surveys (Catalina, Pan-STARRS, ATLAS), the upcoming Vera Rubin Observatory (LSST), and possible Flyeye locations. Chile, South Africa, and a second facility in the Northern Hemisphere were considered. For each observatory, their past or planned pointing strategies were taken into account in the simulation.

Before LSST deployment, a single Flyeye in the Southern Hemisphere performs similarly to a telescope in the Northern Hemisphere. When combined, having one telescope in the north and one in the south maximizes detections and number of unique objects detected. After LSST, southern and northern Flyeye telescopes remain complementary. Overall, simulations show that a second Flyeye in the south complements a Flyeye telescope in the north both before and after LSST. A Flyeye located at La Silla would take advantage of the excellent atmospheric conditions, while allowing a balance of assets across hemispheres.

第二台飞眼望远镜的选址:优化近地天体发现的模拟研究
欧洲航天局(ESA)正在开发一个名为 "飞眼"(Flyeye)的宽视场巡天望远镜网络,以提高发现近地天体(NEOs)的能力。该网络的第一台望远镜将位于北半球的穆法拉山(意大利),第二台飞眼望远镜将提高探测能力,目前刚刚开始关键的设计阶段。对两个绝对星等(H = 25 和 H = 28)的大约 3000 颗撞击小行星进行了传播,并测试了现有主要巡天观测(Catalina、Pan-STARRS、ATLAS)、即将建立的 Vera Rubin 天文台(LSST)以及可能的飞眼地点的可探测性。智利、南非和北半球的第二个设施也在考虑之列。在部署 LSST 之前,南半球的单个飞眼与北半球的望远镜性能相似。当两台望远镜结合使用时,在南半球和北半球各安装一台望远镜可以最大限度地提高探测效率和探测到的独特天体数量。在 LSST 之后,南半球和北半球的飞眼望远镜仍然是互补的。总之,模拟结果表明,在 LSST 之前和之后,南半球的第二台飞眼望远镜都能与北半球的飞眼望远镜互补。位于拉西拉的飞眼望远镜将利用良好的大气条件,同时实现各半球资产的平衡。
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来源期刊
Icarus
Icarus 地学天文-天文与天体物理
CiteScore
6.30
自引率
18.80%
发文量
356
审稿时长
2-4 weeks
期刊介绍: Icarus is devoted to the publication of original contributions in the field of Solar System studies. Manuscripts reporting the results of new research - observational, experimental, or theoretical - concerning the astronomy, geology, meteorology, physics, chemistry, biology, and other scientific aspects of our Solar System or extrasolar systems are welcome. The journal generally does not publish papers devoted exclusively to the Sun, the Earth, celestial mechanics, meteoritics, or astrophysics. Icarus does not publish papers that provide "improved" versions of Bode''s law, or other numerical relations, without a sound physical basis. Icarus does not publish meeting announcements or general notices. Reviews, historical papers, and manuscripts describing spacecraft instrumentation may be considered, but only with prior approval of the editor. An entire issue of the journal is occasionally devoted to a single subject, usually arising from a conference on the same topic. The language of publication is English. American or British usage is accepted, but not a mixture of these.
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