Academic Journal
Fractional polarization of extragalactic sources in the 500 deg2 SPTpol survey
| العنوان: | Fractional polarization of extragalactic sources in the 500 deg2 SPTpol survey |
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| المؤلفون: | Gupta, N., Reichardt, C.L., Ade, P. A. R., Anderson, A.J., Archipley, M., Austermann, J.E., Avva, J.S., Beall, J.A., Bender, A.N., Benson, B.A., Bianchini, F., Bleem, L.E., Carlstrom, J.E., Chang, C.L., Chiang, H.C., Citron, R., Corbett Moran, C., Crawford, T.M., Crites, A.T., de Haan, T., Dobbs, M.A., Everett, W., Feng, C., Gallicchio, J., George, E.M., Gilbert, A., Halverson, N.W., Harrington, N., Henning, J.W., Hilton, G.C., Holder, G.P., Holzapfel, W.L., Hou, Z., Huang, N., Hrubes, J.D., Hubmayr, J., Irwin, K.D., Knox, L., Lee, A.T., Li, D., Lowitz, A., Luong-Van, D., Marrone, D.P., McMahon, J.J, Meyer, S.S., Mocanuohr, L.M., Montgomery, J., Nadolski, A., Natoli, T., Nibarger, J.P., Noble, G.I., Novosad, V., Padin, S., Patil, S., Pryke, C., Ruhl, J.E., Saliwanchik, B.R., Sayre, J.T., Schaffer, K.K., Shirokoff, E., Sievers, C., Smecher, G., Z Staniszewski, Z., Stark, A.A., Story, K.T., Switzer, E.R., Tucker, Carole, Vanderlinde, K., Veach, T., Vieira, J.D., Wang, G., Whitehorn, N., Williamson, R., Wu, W.L.K., Yefremenko, V., Zhang, L. |
| سنة النشر: | 2019 |
| المجموعة: | Cardiff University: ORCA (Online Research @ Cardiff) |
| الوصف: | We study the polarization properties of extragalactic sources at 95 and 150 GHz in the SPTpol 500 deg 2 survey. We estimate the polarized power by stacking maps at known source positions, and correct for noise bias by subtracting the mean polarized power at random positions in the maps. We show that the method is unbiased using a set of simulated maps with similar noise properties to the real SPTpol maps. We find a flux-weighted mean-squared polarization fraction 2 > = [8.9 ± 1.1] × 10 -4 at 95 GHz and [6.9 ± 1.1] × 10 -4 at 150 GHz for the full sample. This is consistent with the values obtained for a subsample of active galactic nuclei. For dusty sources, we find 95 per cent upper limits of 2 > 95 < 16.9 × 10 -3 and 2 > 150 < 2.6 × 10 -3 . We find no evidence that the polarization fraction depends on the source flux or observing frequency. The 1σ upper limit on measured mean-squared polarization fraction at 150 GHz implies that extragalactic foregrounds will be subdominant to the CMB E and B mode polarization power spectra out to at least ℓ ≲ 5700 (ℓ ≲ 4700) and ℓ ≲ 5300 (ℓ ≲ 3600), respectively, at 95 (150) GHz. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://orca.cardiff.ac.uk/id/eprint/156821/1/stz2905.pdf; Gupta, N., Reichardt, C.L., Ade, P. A. R. https://orca.cardiff.ac.uk/view/cardiffauthors/A0479492.html orcid:0000-0002-5127-0401 orcid:0000-0002-5127-0401, Anderson, A.J., Archipley, M., Austermann, J.E., Avva, J.S., Beall, J.A., Bender, A.N., Benson, B.A., Bianchini, F., Bleem, L.E., Carlstrom, J.E., Chang, C.L., Chiang, H.C., Citron, R., Corbett Moran, C., Crawford, T.M., Crites, A.T., de Haan, T., Dobbs, M.A., Everett, W., Feng, C., Gallicchio, J., George, E.M., Gilbert, A., Halverson, N.W., Harrington, N., Henning, J.W., Hilton, G.C., Holder, G.P., Holzapfel, W.L., Hou, Z., Huang, N., Hrubes, J.D., Hubmayr, J., Irwin, K.D., Knox, L., Lee, A.T., Li, D., Lowitz, A., Luong-Van, D., Marrone, D.P., McMahon, J.J, Meyer, S.S., Mocanuohr, L.M., Montgomery, J., Nadolski, A., Natoli, T., Nibarger, J.P., Noble, G.I., Novosad, V., Padin, S., Patil, S., Pryke, C., Ruhl, J.E., Saliwanchik, B.R., Sayre, J.T., Schaffer, K.K., Shirokoff, E., Sievers, C., Smecher, G., Z Staniszewski, Z., Stark, A.A., Story, K.T., Switzer, E.R., Tucker, Carole https://orca.cardiff.ac.uk/view/cardiffauthors/A016987K.html orcid:0000-0002-1851-3918 orcid:0000-0002-1851-3918, Vanderlinde, K., Veach, T., Vieira, J.D., Wang, G., Whitehorn, N., Williamson, R., Wu, W.L.K., Yefremenko, V. and Zhang, L. 2019. Fractional polarization of extragalactic sources in the 500 deg2 SPTpol survey. Monthly Notices of the Royal Astronomical Society 490 (4) 10.1093/mnras/stz2905 https://doi.org/10.1093/mnras%2Fstz2905 file https://orca.cardiff.ac.uk/id/eprint/156821/1/stz2905.pdf |
| DOI: | 10.1093/mnras/stz2905 |
| الاتاحة: | https://orca.cardiff.ac.uk/id/eprint/156821/ https://doi.org/10.1093/mnras/stz2905 https://orca.cardiff.ac.uk/id/eprint/156821/1/stz2905.pdf |
| Rights: | cc_by_4_0 |
| رقم الانضمام: | edsbas.12C51D2A |
| قاعدة البيانات: | BASE |
| DOI: | 10.1093/mnras/stz2905 |
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