location:Notice
Dear colleagues,

I am pleased to invite you to respond to the 3th “Announcement of Opportunity” by submitting proposals for observations to be performed with the Insight-HXMT satellite. The Insight-HXMT Cycle 3 guest observation program is open completely to the whole international scientific community.

Insight-HXMT is China's first X-ray astronomy satellite. It was launched on 15th June 2017 and is currently in service smoothly. There are three main payloads onboard Insight-HXMT, the high energy X-ray telescope (20–250 keV, 5100 cm2), the medium energy X-ray telescope (8–35 keV, 952 cm2), and the low energy X-ray telescope (1–12 keV, 384 cm2) . The main scientific objectives of Insight-HXMT are:
(1) to scan the Galactic Plane to find new transient sources and to monitor the known variable sources;
(2) to observe X-ray binaries to study the dynamics and emission mechanism in strong gravitational or magnetic fields;
(3) to monitor and study Gamma-Ray Bursts (GRBs) and Gravitational Wave Electromagnetic counterparts (GWEM).

The Insight-HXMT Data Analysis Software (HXMTDAS) and the CALDB have been updated frequently and the latest version (V2.02) has been released in December of 2019. The GTI calculations have been updated and the corrections for the collimator deformations have been added (the effective areas will decrease by 2–3% after corrections). To facilitate the analysis of the GRB data, the Insight-HXMT GRB Data Analysis software (version: beta 1.1) has been released as well.

Users can download Level-1 data products on the Insight-HXMT website (http://hsuc.ihep.ac.cn/web). Members of core science team can apply for core observation data in the proprietary period; PI of guest observation can download the corresponding data; the data beyond the proprietary period or ad hoc ToO observation data are open access. Up to Dec. 31 2019, 1164 data product and 230 GRB data has been publicly released.

The key milestones for this announcements(UTC-8):

Begin time: Apr. 30, 2020

Deadline: May. 31, 2020

Final approved program: Jul. 31, 2020

Start of AO-3 Observations: Aug. 1, 2020

End of AO-3 Observations: Jul. 31, 2021

Note:

(1)47 Ms exposure duration in total is available in this announcement, the ratio for core proposals and guest proposals is 2:3. 12 Ms is for non-ToO observations (non-outbursting or non-transient sources) and 35 Ms is for ToO observations (outbursting or transient sources), of which approximately 10% may be triggered in Cycle-03. All the approved observations will be Graded with A (30%), B (50%), and C (20%), respectively, and “C” might be observed depending on the available time allocation. In addition, about 2 Ms will be reserved for the ad hoc observations, such as ToO or calibration observations.

(2)The core proposals are submitted only by the core science group leaders, which should be discussed and determined in the group. Data rights are shared within the core science group members during the data proprietary period.

(3)The core science group members may submit the guest proposals, and follow the data policy of guest proposals.

(4)Proposals about the Galactic Plane scan, background observations and calibration observations are only open to the core science group now.

(5)Joint Proposals are open to coordinate observations with other ground telescopes or satellites. If approved, the proposer should secure the required observation times of other facilities prior to sending the trigger request to Insight-HXMT and coordinate all observations accordingly.

(6)The data proprietary period of AO should be one year for pre-approved non-ToO observations, and three months for pre-approved ToO observations, if not specified otherwise.

(7)PhD Research Program: 20% of the data in the regular observations can be protected for PhD research. The PhD advisors in the core science groups may apply for the data protection for specified periods in the proposals. If approved, the data will not be released publicly during the proprietary periods.

(8)Ad Hoc ToO observations can also be applied for data protection. If approved, the data proprietary period should be three months, the same as for the pre-approved regular ToO observations. Otherwise, Ad Hoc ToO data will be released immediately.

(9)Approved but not yet fully executed Class-A non-ToO observations in AO-2 will be moved to AO-3, and thus do not need to be re-proposed again; all other approved but not yet fully executed AO-2 observations will need to be proposed again with scientific justifications.

Useful links:

White Book: Chinese version ( Download ), English version  ( Download )

Submit via the website (registration needed): http://proposal.ihep.ac.cn/proposal.jspx

Instructions for proposal submission: http://enghxmt.ihep.ac.cn/wd/170.jhtml

Observation time estimator: http://proposal.ihep.ac.cn/calc/calc.jsp

Target Visibility Predictor: http://proposal.ihep.ac.cn/TargetVisibilityPredictor/

Bright source warning tool: http://proposal.ihep.ac.cn/soft/soft2.jspx

Spectrum simulation tool: http://proposal.ihep.ac.cn/soft/user_spec_2020.zip

Instructions for proposal submission: http://enghxmt.ihep.ac.cn/wd/170.jhtml

Proposal forms download: http://enghxmt.ihep.ac.cn/wd/282.jhtml

List of Sources observed: http://enghxmt.ihep.ac.cn/ygclb.jhtml

Data Policy: http://enghxmt.ihep.ac.cn/xgzc/174.jhtml

Insight-HXMT core team composition and paper authorship rules: http://enghxmt.ihep.ac.cn/xgzc/173.jhtml

Insight-HXMT publications: http://enghxmt.ihep.ac.cn/lw.jhtml

I look forward to receiving your Insight-HXMT proposals.

Yours sincerely,

Prof. Shuang-Nan Zhang, PI of Insight-HXMT

Insight-HXMT Science Center, Institute of High Energy Physics, the Chinese Academy of Sciences

Apr. 26, 2020

各位天文届同仁:

慧眼卫星第3轮提案的征集即将开始,特此邀请各位提交核心和客座观测提案申请慧眼卫星的观测时间。核心观测提案将由慧眼核心科学团队提出,本轮客座观测对全球科学界开放。

“慧眼”硬X射线调制望远镜(Insight-HXMT)卫星(以下简称慧眼卫星)是我国第一颗空间X射线天文卫星,它既可以实现宽波段、大视场的X射线巡天,又能够研究黑洞、中子星等高能天体的短时标光变和宽波段能谱,同时也是大视场(~60%全天)和大面积(0.2-3 MeV,~1000 cm2)的伽马射线暴全天监视器。它包含三个主要的在轨探测器:高能X射线望远镜 (20-250 keV, 5100 cm2),中能X射线望远镜 (8-35 keV, 952 cm2)以及低能X射线望远镜 (1-12 keV, 384 cm2)。

“慧眼”卫星自2017年6月15日于酒泉卫星发射中心发射升空,目前已在轨运行34个月,运行良好。在此期间,慧眼卫星获得了银道面扫描巡天、黑洞、中子星、太阳耀发等大量观测数据,伽马射线暴探测率约100个/年。到目前为止,“慧眼”卫星已经取得了多项有显示度的成果:参与监测了首个双中子星并合引力波事件(GW170817)的电磁对应体;测量到了超过80 keV的中子星磁场回旋吸收线;发现了高于200 keV的黑洞双星系统的准周期振荡;发现了中子星的单个Ⅰ型核爆对吸积盘冕的冷却现象;对银盘的扫描监测获得了大量X射线天体的宽波段爆发活动的监测并且发现了多个新变源的候选体;完成了国内最高精度的脉冲星导航试验;还多次参加国际空间和地面联测。这些观测研究表明,“慧眼”卫星不仅能实现其预定的科学目标,而且有望取得超出预期的重要科学成果。慧眼的主要科学目标有:
(1)搜寻银盘面上的新的暂现源,监测已知的变源;
(2)观测X射线双星以研究强引力场或强磁场中的运动和辐射机制;
(3)监测研究伽马射线暴和引力波电磁对应体。

“慧眼”卫星的用户数据分析软件和标定数据库(CALDB)不断完善。利用空天区,Cas A、Crab星云及脉冲星,Perseus等的观测数据不断监测载荷性能的变化,持续更新标定数据库。用户数据分析软件会检索适合该次观测的标定文件并产生正确的响应文件。同时,本底模型考虑了更多的相关因素,有效提高了本底估计的精度。2019年12月,用户分析软件V2.02版正式发布,该版本在毛刺扣除,坏时间扣除方面较过去有改善,并对准直器形变进行了修正(修正后,有效面积较过去降低了2-3%),同时在运行速度上有所提升。此外,为了方便用户利用慧眼卫星开展伽马暴研究,慧眼卫星的伽马暴观测数据已经发布,伽马暴数据分析软件beta 1.1版已于2019年12月发布。

“慧眼”卫星网站为科学用户提供了1级数据产品的下载服务(http://hsuc.ihep.ac.cn/web)。核心科学组成员可以在线申请保护期内的核心观测数据;客座观测提案PI可以下载相应的提案观测数据;临时ToO和超过保护期的观测数据可公开下载。截止2019年12月,网站已提供1164个观测的数据产品以及累计230个伽马暴观测数据的公开下载。

提案征集的主要时间节点(以下均为北京时间):

观测提案征集开始时间:2020年4月30日零时

观测提案征集截止时间:2020年5月31日24时

观测提案评审结果发布时间:2020年7月31日

本轮提案观测开始时间:2020年8月1日

本轮提案观测结束时间:2021年7月31日

几点说明:

(1)本次共征集47兆秒的有效观测时间,核心提案和客座提案的比例为2:3。其中非ToO观测(非暴发源或暂现源)12兆秒,ToO观测35兆秒(预估约10%的爆发几率)。批准的观测时间中A类观测占30%,B类观测占50%,C类观测占20%,其中C类观测将视年度观测执行情况进行,不确保观测。另外,预留出约2兆秒用于临时ToO观测和临时标定观测。

(2)核心观测提案指“慧眼”核心科学组统一提交的观测提案。由各核心科学工作组在组内讨论确定后,由组长统一提交。在数据保护期内,数据使用权在提案所在核心工作组内共享。

(3)客座观测提案指响应慧眼卫星征集客座观测提案的通知提出的、不与慧眼卫星核心科学目标重叠的观测提案申请。客座观测对全球开放,不限定国别,也没有预先时间分配。核心科学组成员可以个人名义提交观测提案,该提案将按照客座观测提案进行评审和执行。

(4)涉及到银道面扫描观测的提案为核心观测提案,暂不开放为客座提案。

(5)多波段联合观测是指慧眼卫星与地面望远镜或者其他在轨卫星联合观测目标天体。申请人可以申请多波段联合观测的观测提案,并在申请获批后负责协调各个设备的观测时间。

(6)除非特别说明,本轮观测提案中的非ToO观测的数据保护期为1年,ToO观测的数据保护期为3个月。

(7)设置“博士生研究计划”,常规观测中20%的数据可申请数据保护,用于博士生毕业论文研究选题。由其博士生导师在提案申请书中提出数据保护申请及保护期限,获批准的数据在保护期内不公开发布。

(8)非本轮征集(临时提交)观测提案中的ToO观测数据也可申请数据保护,如获批准,数据保护期为3个月,否则在完成预处理后立即发布。

(9)对于第二轮观测提案中获得批准但是尚未实施的观测,除了A类非ToO观测外,在第三轮中都不保留,需要重新申请。


常用链接:

白皮书下载:中文版 (下载), English version ( Download )

提案提交界面(需要注册):http://proposal.ihep.ac.cn/proposal.jspx

提案填写指南:http://enghxmt.ihep.ac.cn/wd/170.jhtml

有效曝光时间估计:http://proposal.ihep.ac.cn/calc/calc.jsp

源可见度估计:http://proposal.ihep.ac.cn/TargetVisibilityPredictor/

视场附近亮源情况估计:http://proposal.ihep.ac.cn/soft/soft2.jspx

能谱模拟工具:http://proposal.ihep.ac.cn/soft/user_spec_2020.zip

提案提交说明:http://enghxmt.ihep.ac.cn/wd/170.jhtml

提案及目标源可行性分析模板:http://www.hxmt.org/wd/281.jhtml

已观测源列表:http://www.hxmt.org/ygclb.jhtml

慧眼卫星已发表文章列表:http://www.hxmt.org/lw.jhtml

数据发布与下载:http://hsuc.ihep.ac.cn/web

HXMT卫星数据管理办法:http://www.hxmt.org/xgzc/83.jhtml

慧眼卫星核心科学研究团队的组成、职责及权利:http://www.hxmt.org/xgzc/84.jhtml

再一次欢迎和感谢各位同仁使用慧眼卫星开展科学研究。

张双南

慧眼卫星首席科学家

中国科学院高能物理研究所慧眼卫星科学中心

2020年4月26日