Fractional polarization of extragalactic sources in the 500 deg2 SPTpol survey

Gupta, N.; Reichardt, Christian; Ade, Peter A. R.; Anderson, A. J.; Archipley, Melanie; Austermann, J. E.; Avva, J. S.; Beall, James A.; Bender, A. N.; Benson, B. A.; Bianchini, F.; Bleem, L. E.; Carlstrom, J. E.; Chang, C. L.; Chiang, H. C.; Citron, R.; Moran, C. Corbett; Crawford, T. M.; Crites, A. T.; Haan, T. de; Dobbs, M.; Everett, W.; Feng, Chang; Gallicchio, Jason; George, E. M.; Gilbert, A.; Halverson, N. W.; Harrington, N. L.; Henning, J. W.; Hilton, G. C.; Holder, Gil; Holzapfel, W. L.; Hou, Z.; Hrubes, J. D.; Huang, N.; Hubmayr, Johannes; Irwin, K. D.; Knox, L.; Lee, A. T.; Li, D.; Lowitz, A.; Luong-Van, D.; Marrone, Daniel P.; McMahon, Jeffrey; Meyer, S. S.; Mocanu, L. M.; Mohr, J. J.; 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.; Staniszewski, Z.; Stark, A. A.; Story, K. T.; Switzer, Eric R.; Tucker, C.; Vanderlinde, K.; Veach, Todd; Vieira, J. D.; Wang, G.; Whitehorn, N.; Williamson, A. R.; Wu, W. L. K.; Yefremenko, V.; Zhang, L.

doi:10.1093/mnras/stz2905

Cited by 33 publications

(23 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By applying the stacking techniques to a large sample of dusty galaxies drawn from the PCCS2 857 GHz catalogue, Bonavera et al [131] estimated a median Π of (2.0 ± 0.8%) at 353 GHz, consistent with the 90% confidence upper limit of 2.2% derived by Trombetti et al [128]. The sample by Gupta et al [126] includes 55 sources classified as dusty galaxies. No polarization signal was detected for these sources.…”

Section: Detecting Sources In Polarizationmentioning

confidence: 58%

“…Their results are consistent with a mean fractional polarization Π = 0.028 ± 0.005 and a standard deviation σ p = 0.054, independent of total intensity. Gupta et al [126] investigated the polarisation properties of extragalactic sources in the SPTpol 500 deg 2 survey at 95 and 150 GHz down to 6 mJy. They found no evidence that the polarisation fraction depends on flux density.…”

Section: Detecting Sources In Polarizationmentioning

confidence: 99%

See 1 more Smart Citation

Extragalactic Astrophysics With Next-Generation CMB Experiments

Zotti

Bonato

Negrello

et al. 2019

Front. Astron. Space Sci.

View full text Add to dashboard Cite

Planck, SPT and ACT surveys have clearly demonstrated that Cosmic Microwave Background (CMB) experiments, while optimised for cosmological measurements, have made important contributions to the field of extragalactic astrophysics in the last decade. Future CMB experiments have the potential to make even greater contributions. One example is the detection of highz galaxies with extreme gravitational amplifications. The combination of flux boosting and of stretching of the images has allowed the investigation of the structure of galaxies at z 3 with the astounding spatial resolution of about 60 pc. Another example is the detection of proto-clusters of dusty galaxies at high z when they may not yet possess the hot intergalactic medium allowing their detection in X-rays or via the Sunyaev-Zeldovich effect. Next generation CMB experiments, like PICO, CORE, CMB-Bharat from space and Simons Observatory and CMB-S4 from the ground, will discover several thousands of strongly lensed galaxies out to z ∼ 6 or more and of 1 arXiv:1907.05323v1 [astro-ph.GA] 11 Jul 2019 De Zotti et al. Running Title Figure 1. Effect of angular resolution on the confusion limit. The filled blue circles show the differential counts of sources on SPT maps degraded to the PICO resolution at 150 GHz (FWHM = 6.2 ; left panel) and 220 GHz (FWHM = 3.6 ; right panel) compared with the SPT counts of Mocanu et al. [5, orange stars]. The vertical dot-dashed lines correspond, from left to right, to the 90% completeness limits at the full SPT resolution, at the PICO resolution and at the Planck resolution.galaxy proto-clusters caught in the phase when their member galaxies where forming the bulk of their stars. They will also detect tens of thousands of local dusty galaxies and thousands of radio sources at least up to z 5. Moreover they will measure the polarized emission of thousands of radio sources and of dusty galaxies at mm/sub-mm wavelengths.

show abstract

Section: Detecting Sources In Polarizationmentioning

confidence: 58%

Section: Detecting Sources In Polarizationmentioning

confidence: 99%

Extragalactic Astrophysics With Next-Generation CMB Experiments

Zotti

Bonato

Negrello

et al. 2019

Front. Astron. Space Sci.

View full text Add to dashboard Cite

show abstract

“…The radio source emission is described by D radio l ∝ l 2 and D radio 3000 ¼ 1.06 μK 2 . A 2% polarization fraction is assumed for the Poisson-distributed components of the extragalactic polarized emission [63]. The temperature and polarization Galactic dust power is modeled as power laws with D dust l ∝ l −0.42 and amplitudes given by D TT;dust Instrumental noise is then added to the simulated mockobserved skies through a jackknifing approach.…”

Section: B Simulationsmentioning

confidence: 99%

Searching for anisotropic cosmic birefringence with polarization data from SPTpol

Bianchini¹,

Wu²,

Ade³

et al. 2020

Phys. Rev. D

View full text Add to dashboard Cite

We present a search for anisotropic cosmic birefringence in 500 deg 2 of southern sky observed at 150 GHz with the SPTpol camera on the South Pole Telescope. We reconstruct a map of cosmic polarization rotation anisotropies using higher-order correlations between the observed cosmic microwave background (CMB) E and B fields. We then measure the angular power spectrum of this map, which is found to be consistent with zero. The nondetection is translated into an upper limit on the amplitude of the scale-invariant cosmic rotation power spectrum, LðL þ 1ÞC αα L =2π < 0.10 × 10 −4 rad 2 (0.033 deg 2 , 95% C.L.). This upper limit can be used to place constraints on the strength of primordial magnetic fields, B 1 Mpc < 17 nG (95% C.L.), and on the coupling constant of the Chern-Simons electromagnetic term g aγ < 4.0 × 10 −2 =H I (95% C.L.), where H I is the inflationary Hubble scale. For the first time, we also cross-correlate the CMB temperature fluctuations with the reconstructed rotation angle map, a signal expected to be nonvanishing in certain theoretical scenarios, and find no detectable signal. We perform a suite of systematics and consistency checks and find no evidence for contamination.

show abstract

“…In this paper we focus on the brighter E-mode component of this polarization. The E-mode (EE) polarization power spectrum and the temperature-E-mode (TE) cross-power spectrum can provide tighter constraints on cosmological parameters than temperature data alone [8], and they can be measured out to smaller angular scales on account of the low fractional polarization of extragalactic sources [9][10][11], providing a powerful consistency check of ΛCDM.…”

Section: Introductionmentioning

confidence: 99%

Measurements of the E -mode polarization and temperature- E -mode correlation of the CMB from SPT-3G 2018 data

Dutcher¹,

Balkenhol²,

Ade³

et al. 2021

Phys. Rev. D

198

View full text Add to dashboard Cite

We present measurements of the E-mode (EE) polarization power spectrum and temperature-E-mode (TE) cross-power spectrum of the cosmic microwave background using data collected by SPT-3G, the latest instrument installed on the South Pole Telescope. This analysis uses observations of a 1500 deg 2 region at 95, 150, and 220 GHz taken over a four-month period in 2018. We report binned values of the EE and TE power spectra over the angular multipole range 300 ≤ l < 3000, using the multifrequency data to construct six semi-independent estimates of each power spectrum and their minimum-variance combination. These measurements improve upon the previous results of SPTpol across the multipole ranges 300 ≤ l ≤ 1400 for EE and 300 ≤ l ≤ 1700 for TE, resulting in constraints on cosmological parameters comparable to those from other current leading ground-based experiments. We find that the SPT-3G data set is well fit by a ΛCDM cosmological model with parameter constraints consistent with those from Planck and SPTpol data. From SPT-3G data alone, we find H 0 ¼ 68.8 AE 1.5 km s −1 Mpc −1 and σ 8 ¼ 0.789 AE 0.016, with a gravitational lensing amplitude consistent with the ΛCDM prediction (A L ¼ 0.98 AE 0.12). We combine the SPT-3G and the Planck data sets and obtain joint constraints on the ΛCDM model. The volume of the 68% confidence region in six-dimensional ΛCDM parameter space is reduced by a factor of 1.5 compared to Planck-only constraints, with no significant shifts in central values. We note that the results presented here are obtained from data collected during just half of a typical observing season with only part of the focal plane operable, and that the active detector count has since nearly doubled for observations made with SPT-3G after 2018.

show abstract

Fractional polarization of extragalactic sources in the 500 deg2 SPTpol survey

Cited by 33 publications

References 40 publications

Extragalactic Astrophysics With Next-Generation CMB Experiments

Extragalactic Astrophysics With Next-Generation CMB Experiments

Searching for anisotropic cosmic birefringence with polarization data from SPTpol

Measurements of the E -mode polarization and temperature- E -mode correlation of the CMB from SPT-3G 2018 data

Contact Info

Product

Resources

About