CRAFTS

"漂移扫描多科学目标同时巡天(CRAFTS)"的具体规划和补充说明


国家天文台发布的FAST自由观测申请征集通知中要求新的申请应该避免与优先重大项目重复。为方便天文同行规划,现细化CRAFTS的具体覆盖(p2-p3)和模式(p4)如下。同时补充说明 
1
CRAFTS项目组随时无条件提供已经取得的巡天数据,欢迎同行在观测申请和科学分析中利用CRAFTS已经取得的数据或规划中的观测。 
2
CRAFTS使用特定偏转角度漂移扫描结合高频噪声,是FAST实现超奈奎斯特采样大天区覆盖的有效模式,欢迎同行使用。项目组无条件提供定标流程和相关处理软件,愿意参加技术讨论,不对科学合作或者数据做任何要求。 
3
)任何在赤纬 -14度到+5.5度范围外的观测项目,不在CRAFTS目前5年规划内,不存在与本项目重复的问题。 
4
)对于赤纬在-14度到+5.5度内的目标,仅把长时间连续漂移扫描一次视为重复。例如,科学目标需要扫描多次,或者对特点区域进行编织扫描,都可视为新观测,与现有项目无冲突。在这些情况下,依然欢迎使用CRAFTS模式、数据、处理流程。
5) 
更新日期2022-08-01,已完成约18%的天空覆盖,已开展151CRAFTS观测。具体见"CRAFTS Current Sky Coverage

Observation Setup for CRAFTS scans: 
     1.  
FAST observation setup
     2.
CRAFTS observing Mode
     3.
CRAFTS scan DEC List and Calibration Pipeline
     4.
CRAFTS Full Sky Coverage

FAST Open Call for Proposal

Call for FAST Science Observing Proposals link The Five-hundred-meter Aperture Spherical radio Telescope (FAST), a Chinese national science facility, welcomes submission of science proposals for the upcoming observing period scheduled from August 2021 to July 2022. Users of any nationalities or affiliations are invited to submit proposals before the deadline at 16:00 UT on 15th May 2021 through the website http://fast.bao.ac.cn/proposal_submit . Information on the techniques and current performance of the telescope are available at http://fast.bao.ac.cn . The FAST science operation covers both regular science programs and large programs. Please note that this Call only solicits regular science proposals, which usually take observing time no more than 100 hours. It is anticipated that about 1800 hours of observing time will be allocated to regular science programs. All proposals should make it clear that why the FAST is necessary for the requested observations. The FAST started its full operation in January 2020, and is now completing its first science observing period. A list of previously accepted science proposals, including both regular science and large programs, can be found at http://fast.bao.ac.cn . Note that information of future approved proposals, including titles, PI names, abstracts, and scheduling priorities, will also be posted at the website. Science data obtained through a regular science program have a proprietary period of 12 months. Please see the FAST Data Policy posted at http://fast.bao.ac.cn for more details. Proposers should query the FAST archive before planning observations to check if any existing data meet their scientific goals. Should you have any further question about the telescope operation and proposal submission, please contact fast-proposal-support@nao.cas.cn.

CRAFTS team members

CRAFTS team members: link

CRAFTS Pulsar list

Publications:

巡天总体描述及使用相关模式/数据请引用 (For CRAFTS design please cite)
1). 
FAST in Space: Considerations for a Multibeam, Multipurpose Survey Using China's 500-m Aperture Spherical Radio Telescope (FAST)
Di Li; Pei Wang; Lei Qian; Marko Krco; Alex Dunning; Peng Jiang; Youling Yue; Chenjin Jin; Yan Zhu; Zhichen Pan; and Rendong Nan
IEEE Microwave Magazine, Volume 19, Issue 3, pp.112-119 
ADS Link

Having achieved 'first-light' right before the opening ceremony on September 25, 2016, the Five-hundred-meter Aperture Spherical radio Telescope (FAST) is now kept busy with commissions. Its innovative design requires ~1,000 points to be measured and driven instead of just the two axes of motion, e.g. Azimuth and Elevation for most of the conventional antennae, to realize pointing and tracking. We have devised a survey plan to utilized the full sensitivity of FAST, while minimizing the complexities in operation the system. The 19-beam L band focal plan array will be rotated to specific angles and taking continuous data streams while the surface shape and the focal cabin stay fixed. Such a survey will cover the northern sky in about 220 full days. Our aim is to obtain data for pulsar search, HI (neutral hydrogen) galaxies, HI imaging, and radio transients, simultaneously, through multiple backends. These data sets could be a significant contribution to all related fields in radio astronomy and remain relevant for decades.

2). Lei Qian et al., 2020, The first pulsar discovered by FAST, ApJL, 892, L6.
3). Zhang L. et al., 2019, 
PSR J1926-0652: A Pulsar with Interesting Emission Properties Discovered at FAST, ApJ, 877, 55.
4). Pan Z.C. et al., 2020, 
The FAST Discovery of an Eclipsing Binary Millisecond Pulsar in the Globular Cluster M92 (NGC 6341), ApJL, 892, L6.
Link of SP2 discoveries: 
SP2 
5). Zhang Z.S. et al., 2020, 
First SETI Observations with China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST), ApJ, 891, 174.
6). Cameron A.D. et al., 2020, 
An in-depth investigation of 11 pulsars discovered by FAST, MNRAS, 495, 3515.
7). Yao J.M. et al., 2021, 
Evidence for three-dimensional spin–velocity alignment in a pulsar, NatAs, 5, 788.
8). Cruces M. et al., 2021, 
FAST early pulsar discoveries: Effelsberg follow-up, MNRAS, accepted for publication.
9). Shen Wang et al., 2021, 
An Arecibo Follow-up Study of Seven Pulsars Discovered by Five-hundred-meter Aperture Spherical Radio Telescope (FAST), RAA, 2021 Vol. 21 No. 10, 251.
10). Zhu W.W. et al., 2020, 
A Fast Radio Burst Discovered in FAST Drift Scan Survey, ApJL, 895, L6.
11). Niu C.H. et al., 2021, 
CRAFTS for Fast Radio Bursts: Extending the Dispersion-Fluence Relation with New FRBs Detected by FAST , ApJL, 909, L8.
12). Wang P. et al., 2021, 
FAST discovery of an extremely radio-faint millisecond pulsar from the Fermi-LAT unassociated source 3FGL J0318.1+0252, Sci. China-Phys. Mech. Astron, 64, 129562.

13). Niu C.H. et al., 2022, A repeating fast radio burst associated with a persistent radio source, Nature,  606, 873.

14). Tedila, H. M. et al., 2022, Emission Variation of a Long-period Pulsar Discovered by the Five-hundred-meter Aperture Spherical Radio Telescope (FAST),  ApJ, 929, 171.

15) Wen, Z. G. et al., 2022, A Single-pulse Study of the Subpulse Drifter PSR J1631+1252 Discovered at FAST, ApJ, 929, 71.

16) Miao, C. C. et al., 2022, Arecibo and FAST Timing Follow-up of twelve Millisecond Pulsars Discovered in Commensal Radio Astronomy FAST Survey, MNRAS.


News:

1. FAST Detects Multiple Bursts in L-band from FRB 121102 link

2. The FAST discovery of an Eclipsing Binary Millisecond Pulsar in the Globular Cluster M92 (NGC 6341) link

3. FRB121102 is active again as revealed by FAST link

4. FAST detects a new active repeating fast radio burstFRB190520 link

5. Data release: FRB121102 (Li et al.), FRB190520 (Niu et al.)Polarization of repeating FRBs (Feng et al.).