The CHIME Pulsar Project: System Overview

被引：58

作者：

Amiri, M. ^{[1
]}

Bandura, K. M. ^{[2
,3
]}

Boyle, P. J. ^{[4
,5
]}

Brar, C. ^{[4
,5
]}

Cliche, J. -F. ^{[4
,5
]}

Crowter, K. ^{[1
]}

Cubranic, D. ^{[1
]}

Demorest, P. B. ^{[6
]}

Denman, N. T. ^{[7
]}

Dobbs, M. ^{[4
,5
]}

Dong, F. Q. ^{[1
]}

Fandino, M. ^{[1
]}

Fonseca, E. ^{[4
,5
]}

Good, D. C. ^{[1
]}

Halpern, M. ^{[1
]}

Hill, A. S. ^{[8
,9
]}

Hofer, C. ^{[1
]}

Kaspi, V. M. ^{[4
,5
]}

Landecker, T. L. ^{[9
]}

Leung, C. ^{[10
,11
]}

Lin, H. -H. ^{[12
,13
]}

Luo, J. ^{[12
]}

Masui, K. W. ^{[10
,11
]}

McKee, J. W. ^{[12
]}

Mena-Parra, J. ^{[10
]}

Meyers, B. W. ^{[1
]}

Michilli, D. ^{[4
,5
]}

Naidu, A. ^{[4
,5
]}

Newburgh, L. ^{[14
]}

Ng, C. ^{[15
]}

Patel, C. ^{[4
,15
]}

Pinsonneault-Marotte, T. ^{[1
]}

Ransom, S. M. ^{[16
]}

Renard, A. ^{[15
]}

Scholz, P. ^{[15
]}

Shaw, J. R. ^{[1
]}

Sikora, A. E. ^{[4
,5
]}

Stairs, I. H. ^{[1
]}

Tan, C. M. ^{[4
,5
]}

Tendulkar, S. P. ^{[4
,5
]}

Tretyakov, I. ^{[15
,17
]}

Vanderlinde, K. ^{[15
,18
]}

Wang, H. ^{[10
,11
]}

Wang, X. ^{[19
]}

机构：

[1] Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada

[2] West Virginia Univ, CSEE, Morgantown, WV 26505 USA

[3] West Virginia Univ, Ctr Gravitat Waves & Cosmol, Morgantown, WV 26505 USA

[4] McGill Univ, Dept Phys, 3600 Rue Univ, Montreal, PQ H3A 2T8, Canada

[5] McGill Univ, McGill Space Inst, 3550 Rue Univ, Montreal, PQ H3A 2A7, Canada

[6] Natl Radio Astron Observ, POB O, Socorro, NM 87801 USA

[7] Natl Radio Astron Observ, Cent Dev Lab, 1180 Boxwood Estate Rd, Charlottesville, VA 22903 USA

[8] Univ British Columbia, Dept Comp Sci Math Phys & Stat, 3187 Univ Way, Kelowna, BC V1V 1V7, Canada

[9] Natl Res Council Canada, Domin Radio Astrophys Observ, Herzberg Res Ctr Astron & Astrophys, POB 248, Penticton, BC V2A 6J9, Canada

[10] MIT, MIT Kavli Inst Astrophys & Space Res, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[11] MIT, Dept Phys, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[12] Canadian Inst Theoret Astrophys, 60 St George St, Toronto, ON M5S 3H8, Canada

[13] Max Planck Inst Radio Astron, Huegel 69, D-53121 Bonn, Germany

[14] Yale Univ, Dept Phys, New Haven, CT 06520 USA

[15] Univ Toronto, Dunlap Inst Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada

[16] Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA

[17] Univ Toronto, Dept Phys, Toronto, ON M5S 3H4, Canada

[18] Univ Toronto, David A Dunlap Dept Astron & Astrophys, 50 St George St, Toronto, ON M5S 3H4, Canada

[19] Sun Yat Sen Univ, Sch Phys & Astron, 2 Daxue Rd, Zhuhai, Peoples R China

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2021年 / 255卷 / 01期

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会; 美国国家科学基金会;

关键词：

LONG-TERM SCINTILLATION; MILLISECOND PULSAR; GENERAL-RELATIVITY; BINARY PULSARS; RADIO-BURSTS; CRAB PULSAR; SCATTERING; POLARIZATION; DISCOVERY; SOFTWARE;

D O I：

10.3847/1538-4365/abfdcb

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the design, implementation, and performance of the digital pulsar observing system constructed for the Canadian Hydrogen Intensity Mapping Experiment (CHIME). Using accelerated computing, this system processes independent, digitally steered beams formed by the CHIME correlator to simultaneously observe up to 10 radio pulsars and transient sources. Each of these independent streams is processed by the CHIME/Pulsar back-end system, which can coherently dedisperse, in real time, up to dispersion measure values of 2500 pc cm(-3). The tracking beams and real-time analysis system are autonomously controlled by a priority-based algorithm that schedules both known sources and positions of interest for observation with observing cadences as rapid as 1 day. Given the distribution of known pulsars and radio-transient sources and the dynamic scheduling, the CHIME/Pulsar system can monitor 400-500 positions once per sidereal day and observe most sources with declinations greater than -20 degrees once every similar to 4 weeks. We also discuss the extensive science program enabled through the current modes of data acquisition for CHIME/Pulsar that centers on timing and searching experiments.

引用

页数：16

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