A VLBI receiving system for the South Pole Telescope

被引：11
|
作者：
Kim, Junhan [1 ,2 ]
Marrone, Daniel P. [1 ,2 ]
Beaudoin, Christopher [3 ]
Carlstrom, John E. [4 ,5 ,6 ,7 ]
Doeleman, Sheperd S. [8 ]
Folkers, Thomas W. [1 ,2 ]
Forbes, David [1 ,2 ]
Greer, Christopher H. [1 ,2 ]
Lauria, Eugene F. [1 ,2 ]
Massingill, Kyle D. [1 ,2 ]
Mayer, Evan [4 ]
Nguyen, Chi H. [1 ,2 ,9 ]
Reiland, George [1 ,2 ]
SooHoo, Jason [3 ]
Stark, Antony A. [8 ]
Vertatschitsch, Laura [8 ]
Weintroub, Jonathan [8 ]
Young, Andre [8 ]
机构：
[1] Univ Arizona, Dept Astron, 933 North Cherry Ave, Tucson, AZ 85721 USA
[2] Univ Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA
[3] MIT, Haystack Observ, Route 40, Westford, MA 01886 USA
[4] Univ Chicago, Kavli Inst Cosmol Phys, 5640 South Ellis Ave, Chicago, IL 60637 USA
[5] Univ Chicago, Dept Astron & Astrophys, 5640 South Ellis Ave, Chicago, IL 60637 USA
[6] Univ Chicago, Dept Phys, 5640 South Ellis Ave, Chicago, IL 60637 USA
[7] Univ Chicago, Enrico Fermi Inst, 5640 South Ellis Ave, Chicago, IL 60637 USA
[8] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
[9] Rochester Inst Technol, Sch Phys & Astron, Ctr Detectors, 1 Lomb Mem Dr, Rochester, NY 14623 USA
来源：
MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY IX | 2018年 / 10708卷
基金：
美国国家科学基金会;
关键词：
EHT; SIS receiver; SPT; submillimeter; VLBI; SUPERMASSIVE BLACK-HOLE; EVENT-HORIZON;
D O I：
10.1117/12.2301005
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Event Horizon Telescope (EHT) is a very-long-baseline interferometry (VLBI) experiment that aims to observe supermassive black holes with an angular resolution that is comparable to the event horizon scale. The South Pole occupies an important position in the array, greatly increasing its north-south extent and therefore its resolution. The South Pole Telescope (SPT) is a 10-meter diameter, millimeter-wavelength telescope equipped for bolometric observations of the cosmic microwave background. To enable VLBI observations with the SPT we have constructed a coherent signal chain suitable for the South Pole environment. The dual-frequency receiver incorporates state-of-the-art SIS mixers and is installed in the SPT receiver cabin. The VLBI signal chain also includes a recording system and reference frequency generator tied to a hydrogen maser. Here we describe the SPT VLBI system design in detail and present both the lab measurements and on-sky results.
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页数：14
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