2020ApJ...897....5N

Query : 2020ApJ...897....5N

2020ApJ...897....5N - Astrophys. J., 897, 5-5 (2020/July-1)

Measuring HERA's primary beam in situ: methodology and first results.

NUNHOKEE C.D., PARSONS A.R., KERN N.S., NIKOLIC B., POBER J.C., BERNARDI G., CARILLI C.L., ABDURASHIDOVA Z., AGUIRRE J.E., ALEXANDER P., ALI Z.S., BALFOUR Y., BEARDSLEY A.P., BILLINGS T.S., BOWMAN J.D., BRADLEY R.F., BURBA J., CHENG C., DEBOER D.R., DEXTER M., DE LERA ACEDO E., DILLON J.S., EWALL-WICE A., FAGNONI N., FRITZ R., FURLANETTO S.R., GALE-SIDES K., GLENDENNING B., GORTHI D., GREIG B., GROBBELAAR J., HALDAY Z., HAZELTON B.J., HEWITT J.N., JACOBS D.C., JULIUS A., KERRIGAN J., KITTIWISIT P., KOHN S.A., KOLOPANIS M., LANMAN A., LA PLANTE P., LEKALAKE T., LIU A., MacMAHON D., MALAN L., MALGAS C., MAREE M., MARTINOT Z.E., MATSETELA E., MESINGER A., MOLEWA M., MORALES M.F., MOSIANE T., NEBEN A.R., PATRA N., PIETERSE S., RAZAVI-GHODS N., RINGUETTE J., ROBNETT J., ROSIE K., SIMS P., SMITH C., SYCE A., THYAGARAJAN N., WILLIAMS P.K.G. and ZHENG H.

Abstract (from CDS):

The central challenge in 21 cm cosmology is isolating the cosmological signal from bright foregrounds. Many separation techniques rely on the accurate knowledge of the sky and the instrumental response, including the antenna primary beam. For drift-scan telescopes, such as the Hydrogen Epoch of Reionization Array (HERA), that do not move, primary beam characterization is particularly challenging because standard beam-calibration routines do not apply (Cornwell et al.) and current techniques require accurate source catalogs at the telescope resolution. We present an extension of the method from Pober et al. where they use beam symmetries to create a network of overlapping source tracks that break the degeneracy between source flux density and beam response and allow their simultaneous estimation. We fit the beam response of our instrument using early HERA observations and find that our results agree well with electromagnetic simulations down to a -20 dB level in power relative to peak gain for sources with high signal-to-noise ratio. In addition, we construct a source catalog with 90 sources down to a flux density of 1.4 Jy at 151 MHz.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Cosmology - H I line emission - Radio astronomy

VizieR on-line data: <Available at CDS (J/ApJ/897/5): table2.dat>

Simbad objects: 89

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Number of rows : 89
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PKS J0130-2610 rG 01 30 27.5519 -26 09 50.648           ~ 22 1
2 PKS J0141-2706 rG 01 41 27.158 -27 06 06.60           ~ 26 1
3 PKS 0148-297 rG 01 50 34.320 -29 32 43.63           ~ 26 1
4 QSO J0200-3053 QSO 02 00 12.1757038704 -30 53 26.673024840   19.0 19.6     ~ 62 1
5 PKS J0212-2759 rG 02 12 10.246 -28 00 12.13           ~ 10 1
6 PKS J0213-3413 Rad 02 13 17.48 -34 13 29.0           ~ 8 1
7 PKS 0213-315 Rad 02 15 27.203 -31 21 36.93           ~ 7 1
8 PKS J0217-2947 Rad 02 17 37.082 -29 47 53.58           ~ 2 1
9 PKS 0216-25 rG 02 18 44.135 -24 48 16.22           ~ 15 1
10 PKS J0219-3625 rG 02 19 02.9073835368 -36 26 07.161827064   19.90   19.15   ~ 13 1
11 PKS J0223-2819 rG 02 23 43.798 -28 18 57.41           ~ 11 1
12 PKS J0227-3352 Rad 02 27 16.922 -33 52 31.16           ~ 4 1
13 PKS 0225-308 rG 02 27 20.281 -30 37 46.65     18.5     ~ 7 1
14 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
15 NGC 1316 rG 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1491 1
16 LEDA 13982 Sy2 03 51 35.7643720392 -27 44 34.896912468   16.0       ~ 157 1
17 QSO B0413-296 QSO 04 15 08.6933643384 -29 29 03.254910792     19.0     ~ 24 1
18 Cul 0427-366 BLL 04 29 40.1081 -36 30 54.017           ~ 26 1
19 PKS J0430-2800 rG 04 30 17.904 -28 00 45.41           ~ 12 1
20 PKS J0432-2956 Rad 04 33 00.393 -29 56 14.61           ~ 7 1
21 QSO B0435-300 BLL 04 37 36.5686975680 -29 54 04.117331088     17.5     ~ 48 1
22 QSO B0436-313 QSO 04 38 32.8090874808 -31 12 51.193780920           ~ 4 1
23 LEDA 745026 Sy2 04 44 37.7077672896 -28 09 54.445127796   18.5       ~ 104 1
24 PKS 0453-30 rG 04 55 14.2787262459 -30 06 48.748690569   18.5       ~ 35 1
25 NVSS J050518-281633 Rad 05 05 18.747 -28 16 32.87           ~ 2 1
26 PKS J0511-3011 Rad 05 11 35.348 -30 11 25.23           ~ 4 1
27 ESO 252-18A Sy1 05 19 49.7229323856 -45 46 43.852662732   15.73 15.77 14.85   ~ 714 0
28 ESO 362-21 BLL 05 22 57.98464178 -36 27 30.8512953   15.26 14.62 14.48   ~ 873 2
29 PKS 0521-329 rG 05 23 32.8746411432 -32 51 20.636222904     18.0     ~ 12 1
30 PKS J0531-3032 Rad 05 31 15.575 -30 32 15.53           ~ 8 1
31 PKS 0538-331 Rad 05 40 17.165 -33 09 19.70           ~ 5 1
32 PKS J0543-3336 Rad 05 43 58.511 -33 36 30.08           ~ 4 1
33 PKS J0545-3159 Rad 05 45 16.462 -31 58 59.99           ~ 3 1
34 PKS J0545-2630 rG 05 45 58.339 -26 30 14.59           ~ 11 1
35 GLEAM J055205-345955 AGN 05 52 05.4709 -34 59 58.194           ~ 4 1
36 PKS 0554-32 Rad 05 56 15.544 -32 23 10.58           ~ 10 1
37 PMN J0558-2855 rG 05 57 59.927 -28 55 51.18           ~ 11 1
38 PMN J0558-2809 rG 05 58 20.540 -28 09 15.95           ~ 7 1
39 PKS 0558-309 Rad 06 00 15.179 -30 56 35.61           ~ 4 1
40 PKS 0601-34 rG 06 03 12.2273 -34 26 32.822           ~ 15 1
41 NVSS J060405-285848 rG 06 04 05.187 -28 58 49.96           ~ 8 1
42 QSO B0602-319 QSO 06 04 14.5249715184 -31 55 58.492829784     18.3     ~ 57 1
43 LEDA 650626 AGN 06 05 54.0318058320 -35 18 07.766698860   17.66 17.0 15.98   ~ 23 1
44 PMN J0617-2825 Rad 06 17 21.200 -28 25 51.84           ~ 4 1
45 PKS J0620-3711 Rad 06 19 57.08 -37 11 47.7           ~ 8 1
46 QSO B0625-354 BLL 06 27 06.7286533392 -35 29 15.363665088   14.93       ~ 206 1
47 PKS J0631-3217 rG 06 31 50.2401802097 -32 16 51.059056483     18.5     ~ 5 1
48 PKS J0634-2711 Rad 06 34 33.398 -27 11 22.13           ~ 6 1
49 PKS J0639-2745 Rad 06 39 57.340 -27 45 39.23           ~ 6 1
50 PKS J0644-3155 Rad 06 44 13.408 -31 55 58.95           ~ 4 1
51 NVSS J064925-291925 Rad 06 49 25.233 -29 19 27.78           ~ 4 1
52 PMN J0654-2852 Rad 06 54 19.748 -28 52 24.31           ~ 4 1
53 PKS 0655-319 Rad 06 57 16.4948676948 -32 03 32.824535093           ~ 11 1
54 NVSS J065818-263240 Rad 06 58 18.37 -26 32 41.7           ~ 4 1
55 NVSS J070901-355922 Rad 07 09 01.21 -35 59 24.1           ~ 4 1
56 PMN J0711-3203 rG 07 11 43.92019 -32 02 54.1492           ~ 7 1
57 PKS J0717-3621 rG 07 17 08.1151208976 -36 21 58.725123120   15.47   13.64   ~ 36 1
58 PMN J0844-2633 Rad 08 44 58.531 -26 34 15.26           ~ 4 1
59 [VV98] J090015.4-281758 QSO 09 00 15.3028571880 -28 17 58.499989980     18.90     ~ 19 1
60 PKS J0901-2555 SyG 09 01 47.2741003747 -25 55 16.067903655   18.5       ~ 71 1
61 GLEAM J090911-313334 AGN 09 09 11.5025 -31 33 35.358           ~ 5 1
62 PKS 0914-313 Rad 09 16 56.052 -31 36 37.66           ~ 4 1
63 PKS 0919-321 Rad 09 21 21.633 -32 19 37.05           ~ 3 1
64 PMN J0922-2726 Rad 09 22 52.735 -27 26 31.29           ~ 5 1
65 PMN J0924-2906 Rad 09 24 10.765 -29 06 06.84           ~ 6 1
66 NVSS J092634-262359 Rad 09 26 34.687 -26 23 58.52           ~ 3 1
67 Cul 0926-292 AGN 09 29 02.7090 -29 30 19.943           ~ 6 1
68 PKS 0935-289 rG 09 38 01.4330 -29 12 36.156     18.5     ~ 7 1
69 ESO 373-18 SyG 09 39 59.2500054792 -33 07 06.731742936   17.75 16.0 17.02   ~ 17 1
70 NVSS J094401-305245 Rad 09 44 01.035 -30 52 42.66           ~ 3 1
71 NVSS J094649-272050 Rad 09 46 49.53 -27 20 51.4           ~ 2 1
72 PKS 0947-24 rG 09 49 52.8553 -25 11 45.919           ~ 26 1
73 NVSS J095003-330828 Rad 09 50 03.38 -33 08 26.7           ~ 2 1
74 PKS 0952-306 rG 09 54 33.8741225784 -30 53 21.856933680   17.85 17.5 16.01   ~ 6 1
75 PKS J0958-2904 rG 09 58 04.838584800 -29 04 07.86793440           ~ 16 1
76 PKS 1002-320 rG 10 04 39.527 -32 16 33.61           ~ 13 1
77 QSO J1008-3011 QSO 10 08 55.2458434344 -30 11 12.320116980   18.77 18.0 17.78   ~ 23 1
78 LEDA 2826215 Sy1 10 13 29.7115118112 -28 31 25.625892396   16.80 16.88 17.04   ~ 68 1
79 PKS 1011-316 Rad 10 13 48.180 -31 53 25.00           ~ 7 1
80 PKS 1017-325 Rad 10 20 11.576 -32 45 35.33           ~ 10 1
81 PKS J1020-3335 rG 10 20 20.7135929808 -33 36 04.392033480           ~ 5 1
82 PKS J1020-3210 rG 10 20 56.6473212654 -32 11 04.111906488     19.5     ~ 4 1
83 NVSS J102631-294118 Rad 10 26 33.016 -29 41 04.59           ~ 2 1
84 PKS 1030-34 rG 10 33 13.14 -34 18 45.2           ~ 19 1
85 PKS J1037-3343 Rad 10 37 03.709 -33 43 33.88           ~ 3 1
86 PKS J1037-2907 rG 10 37 23.778 -29 07 54.18           ~ 9 1
87 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
88 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
89 MCG+01-43-006 SyG 16 51 07.9886687784 +04 59 35.547131472     18.25     ~ 502 1

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