The Green Bank 820 MHz Pulsar Survey. I. Survey Overview and Initial Results

被引：1
|
作者：
Mcewen, A. E. [1 ,2 ]
Lynch, R. S. [3 ]
Kaplan, D. L. [2 ]
Bolda, C. [2 ,4 ]
Sengar, R. [2 ]
Fonseca, E. [5 ,6 ]
Agoudemos, T. [2 ]
Boyles, J. [7 ]
Chatterjee, S. [8 ,9 ]
Cohen, T. [10 ]
Crawford, F. [11 ]
Decesar, M. E. [12 ]
Ehlke, A. [2 ]
Fernandez, T. [2 ]
Ferrara, E. C. [13 ]
Fiore, W. [5 ,6 ]
Gilhaus, N. [2 ]
Gleiter, M. [2 ]
Hessels, J. W. T. [14 ,15 ]
Holman, T. [2 ]
Joy, A. [2 ]
Kaspi, V. [16 ,17 ]
Kondratiev, V. [15 ]
Leon, H. D. [2 ]
Levin, L. [18 ]
Lorenz, B. [2 ]
Lorimer, D. R. [5 ,6 ]
Madison, D. R. [19 ]
Mclaughlin, M. A. [5 ,6 ]
Meyers, B. W. [20 ,21 ]
Parent, E. [22 ,23 ]
Patron, L. [2 ]
Ransom, S. M. [24 ]
Ray, P. S. [25 ]
Roberts, M. S. [26 ]
Roch, S. [2 ]
Siemens, X. [27 ]
Stearns, G. [2 ]
Swiggum, J. K. [2 ,28 ]
Stairs, I. H. [21 ]
Stovall, K. [29 ]
Tan, C. M. [16 ,17 ]
Valentine, N. [2 ]
van Leeuwen, J. [15 ]
机构：
[1] George Washington Univ, Dept Phys, Washington, DC 20052 USA
[2] Univ Wisconsin Milwaukee, Ctr Gravitat Cosmol & Astrophys, Dept Phys, POB 413, Milwaukee, WI 53201 USA
[3] Green Bank Observ, POB 2, Green Bank, WV 24494 USA
[4] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77845 USA
[5] West Virginia Univ, Dept Phys & Astron, POB 6315, Morgantown, WV 26506 USA
[6] West Virginia Univ, Ctr Gravitat Waves & Cosmol, Chestnut Ridge Res Bldg, Morgantown, WV 26505 USA
[7] Western Kentucky Univ, Dept Phys & Astron, 1906 Coll Hts Blvd, Bowling Green, KY 42101 USA
[8] Cornell Univ, Cornell Ctr Astrophys & Planetary Sci, Cornell, NY 14853 USA
[9] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA
[10] New Mexico Inst Min & Technol, Dept Phys, 801 Leroy Pl, Socorro, NM 87801 USA
[11] Franklin & Marshall Coll, Dept Phys & Astron, POB 3003, Lancaster, PA 17604 USA
[12] George Mason Univ, Fairfax, VA 22030 USA
[13] Univ Maryland, Dept Astron, College Pk, MD 20742 USA
[14] Univ Amsterdam, Anton Pannekoek Inst Astron, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands
[15] Netherlands Inst Radio Astron, ASTRON, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands
[16] McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada
[17] McGill Univ, McGill Space Inst, 3600 Univ St, Montreal, PQ H3A 2T8, Canada
[18] Univ Manchester, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Manchester M13 9PL, England
[19] Univ Pacific, Dept Phys, 3601 Pacific Ave, Stockton, CA 95211 USA
[20] Curtin Univ, Int Ctr Radio Astron Res ICRAR, Bentley, WA 6102, Australia
[21] Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada
[22] CSIC, Inst Space Sci ICE, Campus UAB,Carrer Can Magrans S-N, E-08193 Barcelona, Spain
[23] Inst Estudis Espacials Catalunya IEEC, Carrer Gran Capita 2-4, E-08034 Barcelona, Spain
[24] Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA
[25] US Naval Res Lab, Washington, DC 20375 USA
[26] Eureka Sci, Oakland, CA USA
[27] Oregon State Univ, Dept Phys, Corvallis, OR 97331 USA
[28] Lafayette Coll, Dept Phys, 730 High St, Easton, PA 18042 USA
[29] Natl Radio Astron Observ, 1003 Lopezville Rd, Socorro, NM 87801 USA
来源：
ASTROPHYSICAL JOURNAL | 2024年 / 969卷 / 02期
基金：
加拿大创新基金会; 美国国家科学基金会;
关键词：
CELESTIAL CAP PULSAR; TIMING ARRAY LIMITS; GAMMA-RAY PULSARS; PSR J2021+3651; GRAVITATIONAL-WAVES; MILLISECOND PULSARS; GENERAL-RELATIVITY; RADIO PULSARS; CYGNUS OB2; DISCOVERY;
D O I：
10.3847/1538-4357/ad47f0
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Green Bank 820 MHz pulsar survey covers similar or equal to 173 deg2 in the Cygnus X region of the Galaxy, centered on l = 84.degrees 5 and b = 1.degrees 5. Significant star formation is present in this region, and lines of sight pass through three arms of the Galaxy (Orion-Cygnus, Perseus, and an outer arm). Using the Green Bank Telescope, we recorded 200 MHz of bandwidth for 4.5 minutes at 81.92 mu s resolution for each of 3457 observed survey pointings during 2016 and 2017, covering about two-thirds of the total area. We searched these data for pulsars and report the discovery of six new pulsars-PSRs J2016+3820, J2016+4231, J2019+3810, J2035+3538, J2035+3655, and J2041+4551-and the codiscovery of PSR J2057+4701. PSR J2035+3655 is in a short (4.5 hr) binary orbit; we report the full binary solution and weakly constrain the mass of the pulsar via a marginal (2 sigma) detection of the Shapiro delay. We also searched the survey data for known pulsars to estimate the survey's sensitivity and measured 820 MHz pulse widths and flux density for 20 detected sources. For sources that were also detected in the Green Bank North Celestial Cap survey at 350 MHz, we measure scattering parameters and compare to expectations for the region. With these results, we revisit the population estimates that motivated this survey and consider the impact of the survey's yield on their underlying models. We note an apparent underestimate in dispersion measure predictions from typical Galactic electron density models in the survey region, and discuss future observation strategies.
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页数：17
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