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> From: [email protected] > Subject: arXiv New submission -> 1502.06016 in astro-ph.CO from > [email protected] > Date: February 23, 2015 at 5:27:08 PM PST > To: [email protected] > Reply-To: [email protected] > > Your submission submit/1189222 has been assigned the permanent arXiv > identifier 1502.06016 and is available at: > > http://arxiv.org/abs/1502.06016 > > > The paper password for this article is: 5zwy8 > Please share this with your co-authors. They may use it to claim > ownership. > > > Abstract will appear in today's mailing as: > ------------------------------------------------------------------------------ > \\ > arXiv:1502.06016 > From: Zaki Ali <[email protected]> > Date: Fri, 20 Feb 2015 21:39:47 GMT (10770kb,D) > > Title: PAPER-64 Constraints on Reionization: The 21cm Power Spectrum at z=8.4 > Authors: Zaki S. Ali, Aaron R. Parsons, Haoxuan Zheng, Jonathan C. Pober, > Adrian Liu, James E. Aguirre, Richard F. Bradley, Gianni Bernardi, Chris L. > Carilli, Carina Cheng, David R. DeBoer, Matthew R. Dexter, Jasper Grobbelaar, > Jasper Horrell, Daniel C. Jacobs, Pat Klima, David H. E. MacMahon, Matthys > Maree, David F. Moore, Nima Razavi, Irina I. Stefan, William P. Walbrugh, > Andre Walker > Categories: astro-ph.CO > License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/ > \\ > In this paper, we report new limits on 21cm emission from cosmic reionization > based on a 135-day observing campaign with a 64-element deployment of the > Donald C. Backer Precision Array for Probing the Epoch of Reionization (PAPER) > in South Africa. This work extends the work presented in Parsons et al. (2014) > with more collecting area, a longer observing period, improved > redundancy-based > calibration, optimal fringe-rate filtering, and improved power-spectral > analysis using optimal quadratic estimators. The result is a new $2\sigma$ > upper limit on $\Delta^{2}(k)$ of (22.4 mK)$^2$ in the range $0.15 < k < 0.5h\ > {\rm Mpc}^{-1}$ at $z = 8.4$. This represents a three-fold improvement over > the > previous best upper limit. As we discuss in more depth in a forthcoming paper > (Pober et al. 2015, in prep), this upper limit supports and extends previous > evidence against extremely cold reionization scenarios. We conclude with a > discussion of implications for future 21cm reionization experiments, including > the newly funded Hydrogen Epoch of Reionization Array (HERA). > \\ > > > Contains: > aastex.cls: 66188 bytes > apj.bst: 33547 bytes > emulateapj.cls: 56275 bytes > plots: 12288 bytes > plots/C_example.png: 30422 bytes > plots/PicA_normalized_spectrum.pdf: 68013 bytes > plots/PicA_normalized_spectrum.ps: 61437 bytes > plots/README: 120 bytes > plots/_Cx_example.png: 133090 bytes > plots/aaron_fr_preserved_signal.png: 97841 bytes > plots/antenna_positions.png: 54956 bytes > plots/antenna_positions.py: 1574 bytes > plots/apply_bandpass_psa64.py: 1408 bytes > plots/august_chi2.png: 307225 bytes > plots/chi2.png: 181217 bytes > plots/coeff.npy: 160 bytes > plots/coverage.png: 353481 bytes > plots/data_flow_chart.pdf: 136020 bytes > plots/data_flow_chart.png: 52079 bytes > plots/density.png: 116520 bytes > plots/eig.png: 81037 bytes > plots/err.npy: 248 bytes > plots/fisher.png: 20100 bytes > plots/flat_k3pk_posterior.png: 37044 bytes > plots/flat_k3pk_posterior_no35.png: 36986 bytes > plots/foreground_lst_bl.png: 134501 bytes > plots/fr_filter_slice.png: 51084 bytes > plots/fr_preserved_signal.png: 64065 bytes > plots/freq.npy: 1704 bytes > plots/frf_conv.py: 9032 bytes > plots/frf_conv.pyc: 8868 bytes > plots/frf_lst_bl.png: 165629 bytes > plots/fringe_rate_filter_w_fg.py: 4515 bytes > plots/fringe_rate_filter_w_fg_1ch.py: 10595 bytes > plots/gianni_pic_image.pdf: 319406 bytes > plots/inv_cov.png: 145772 bytes > plots/k.npy: 168 bytes > plots/k3err.npy: 168 bytes > plots/k3pk.npy: 168 bytes > plots/kpl.npy: 248 bytes > plots/lamV_example.png: 53783 bytes > plots/lam_example.png: 54934 bytes > plots/lidz_mcquinn_k3pk: 4096 bytes > plots/lidz_mcquinn_k3pk/hmass: 4096 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_hmass_z7.17_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_hmass_z7.32_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_hmass_z7.47_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_hmass_z7.63_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_hmass_z7.79_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_hmass_z8.15_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_hmass_z8.34_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_hmass_z8.76_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_hmass_z9.76_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_minih_z11.07_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_minih_z6.42_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_minih_z6.77_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_minih_z6.90_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_minih_z7.17_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_minih_z7.32_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_minih_z7.47_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_minih_z7.79_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_minih_z8.76_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/power_21cm_minih_z9.76_a.dat: 13000 bytes > plots/lidz_mcquinn_k3pk/hmass/xion_hmass.dat: 117 bytes > plots/lidz_mcquinn_k3pk/hmass/xion_minih.dat: 144 bytes > plots/lidz_mcquinn_k3pk/k3pk_vs_z_lidz_mcquinn.png: 67973 bytes > plots/lidz_mcquinn_k3pk/plot_dspec_eor.py: 2437 bytes > plots/lidz_mcquinn_k3pk/plot_k3pk_curves.py: 1749 bytes > plots/lidz_mcquinn_k3pk/power_21cm_z11.46.dat: 14800 bytes > plots/lidz_mcquinn_k3pk/power_21cm_z6.77.dat: 14800 bytes > plots/lidz_mcquinn_k3pk/power_21cm_z6.90.dat: 14800 bytes > plots/lidz_mcquinn_k3pk/power_21cm_z7.03.dat: 14800 bytes > plots/lidz_mcquinn_k3pk/power_21cm_z7.32.dat: 14800 bytes > plots/lidz_mcquinn_k3pk/power_21cm_z8.34.dat: 14800 bytes > plots/lidz_mcquinn_k3pk/power_21cm_z8.76.dat: 14800 bytes > plots/lidz_mcquinn_k3pk/psa746_v008.py: 96334 bytes > plots/lsts.npy: 5768 bytes > plots/nints_lst_freqs.png: 154996 bytes > plots/noise_t.png: 79818 bytes > plots/noise_t_35.png: 93398 bytes > plots/noise_vs_fq_plot.png: 170425 bytes > plots/omniview_64.png: 46227 bytes > plots/omniview_64_old.png: 167666 bytes > plots/patchy_bound.png: 43837 bytes > plots/picimg.png: 84238 bytes > plots/picimg.psd: 487063 bytes > plots/picimg_cs.png: 108478 bytes > plots/picspec.png: 39145 bytes > plots/pk.npy: 248 bytes > plots/pk3pk_frf.png: 52798 bytes > plots/pk3pk_nomni.png: 45191 bytes > plots/pk3pk_zaki.png: 55321 bytes > plots/pk_k3pk.png: 57564 bytes > plots/pk_k3pk_nofrf.png: 53805 bytes > plots/pk_k3pk_nomni.png: 53656 bytes > plots/pk_lstdif.png: 145556 bytes > plots/plot_calibration.py: 2516 bytes > plots/plot_calibration.sh: 80 bytes > plots/plot_chi2.py: 1703 bytes > plots/plot_coverage.py: 4441 bytes > plots/plot_density.py: 883 bytes > plots/plot_eig.py: 3217 bytes > plots/plot_fg_pspec.py: 72 bytes > plots/plot_fisher.py: 692 bytes > plots/plot_frf_filter.py: 3439 bytes > plots/plot_inv_cov.py: 3512 bytes > plots/plot_multi.py: 122 bytes > plots/plot_noise_t.py: 2491 bytes > plots/plot_noise_t_64.py: 2910 bytes > plots/plot_omni_diff.py: 2782 bytes > plots/plot_omniview.py: 993 bytes > plots/plot_patchy_bound.py: 13247 bytes > plots/plot_picimg.py: 6529 bytes > plots/plot_picspec.py: 539 bytes > plots/plot_pk_k3pk.py: 23742 bytes > plots/plot_pk_k3pk_multi.py: 12289 bytes > plots/plot_pspec_variance.py: 3062 bytes > plots/plot_sigloss.py: 3070 bytes > plots/plot_stability.py: 3738 bytes > plots/plot_tsys.py: 1678 bytes > plots/plot_waterfall_fg.sh: 502 bytes > plots/plot_waterfalls.py: 3148 bytes > plots/plot_window.py: 853 bytes > plots/plot_xx_yy_waterfalls.py: 759 bytes > plots/psa6240_v003.py: 62036 bytes > plots/psa6240_v003.pyc: 41686 bytes > plots/pspec.png: 57564 bytes > plots/pspec_comparison.png: 62481 bytes > plots/pspec_pk_k3pk_boot.py: 10359 bytes > plots/pspec_redmult_cov_gps_omni.py: 29844 bytes > plots/pspec_variance.png: 184937 bytes > plots/q.log: 925 bytes > plots/qp_C_waterfall.png: 186273 bytes > plots/qp_I_waterfall.png: 164233 bytes > plots/sigloss.png: 51153 bytes > plots/signal_loss.png: 51282 bytes > plots/stability.png: 24634 bytes > plots/texput.log: 746 bytes > plots/the_wedge.py: 30 bytes > plots/ts_patchy_bound.png: 44972 bytes > plots/tsys.npy: 1154744 bytes > plots/tsys.png: 103954 bytes > plots/tsys_jy.npy: 1154744 bytes > plots/tsys_lst_164mhz.png: 51385 bytes > plots/tsys_lst_freq.png: 220217 bytes > plots/waterfalls.png: 832674 bytes > plots/waterfalls_labeled.png: 811579 bytes > plots/wbd_lst_bl.png: 278283 bytes > plots/wbdf_waterfalls.png: 374519 bytes > plots/window.png: 34341 bytes > plots/x_Cx_alldata.png: 1069517 bytes > plots/x_example.png: 123910 bytes > psa64_pspec.toc: 1195 bytes > psa64_pspec_ver2.bbl: 29916 bytes > psa64_pspec_ver2.tex: 172995 bytes > texput.log: 702 bytes > todo: 464 bytes > >
