Zobrazeno 1 - 10
of 235
pro vyhledávání: '"Wyithe, J. S."'
The cosmological 21cm signal offers a potential probe of the early Universe and the first ionizing sources. Current experiments probe the spatially-dependent variance (Gaussianity) of the signal through the power spectrum (PS). The signal however is
Externí odkaz:
http://arxiv.org/abs/2402.17254
Autor:
Oesch, P. A., Brammer, G., Naidu, R. P., Bouwens, R. J., Chisholm, J., Illingworth, G. D., Matthee, J., Nelson, E., Qin, Y., Reddy, N., Shapley, A., Shivaei, I., van Dokkum, P., Weibel, A., Whitaker, K., Wuyts, S., Covelo-Paz, A., Endsley, R., Fudamoto, Y., Giovinazzo, E., Herard-Demanche, T., Kerutt, J., Kramarenko, I., Labbe, I., Leonova, E., Lin, J., Magee, D., Marchesini, D., Maseda, M., Mason, C., Matharu, J., Meyer, R. A., Neufeld, C., Lyon, G. Prieto, Schaerer, D., Sharma, R., Shuntov, M., Smit, R., Stefanon, M., Wyithe, J. S. B., Xiao, M.
We present the JWST Cycle 1 53.8hr medium program FRESCO, short for "First Reionization Epoch Spectroscopically Complete Observations". FRESCO covers 62 arcmin$^2$ in each of the two GOODS/CANDELS fields for a total area of 124 arcmin$^2$ exploiting
Externí odkaz:
http://arxiv.org/abs/2304.02026
Autor:
Leonova, E., Oesch, P. A., Qin, Y., Naidu, R. P., Wyithe, J. S. B., de Barros, S., Bouwens, R. J., Ellis, R. S., Endsley, R. M., Hutter, A., Illingworth, G. D., Kerutt, J., Labbe, I., Laporte, N., Magee, D., Mutch, S. J., Roberts-Borsani, G. W., Smit, R., Stark, D. P., Stefanon, M., Tacchella, S., Zitrin, A.
Before the end of the epoch of reionization, the Hydrogen in the Universe was predominantly neutral. This leads to a strong attenuation of Ly$\alpha$ lines of $z\gtrsim6$ galaxies in the intergalactic medium. Nevertheless, Ly$\alpha$ has been detecte
Externí odkaz:
http://arxiv.org/abs/2112.07675
Autor:
Rahimi, M., Pindor, B., Line, J. L. B., Barry, N., Trott, C. M., Webster, R. L., Jordan, C. H., Wilensky, M., Yoshiura, S., Beardsley, A., Bowman, J., Byrne, R., Chokshi, A., Hazelton, B. J., Hasegawa, K., Howard, E., Greig, B., Jacobs, D., Joseph, R., Kolopanis, M., Lynch, C., McKinley, B., Mitchell, D. A., Murray, S., Morales, M. F., Pober, J. C., Takahashi, K., Tingay, S. J., Wayth, R. B., Wyithe, J. S. B., Zheng, Q.
Current attempts to measure the 21cm Power Spectrum of neutral hydrogen during the Epoch of Reionization are limited by systematics which produce measured upper limits above both the thermal noise and the expected cosmological signal. These systemati
Externí odkaz:
http://arxiv.org/abs/2110.03190
Autor:
Trott, Cathryn M., Jordan, C. H., Line, J. L. B., Lynch, C. R., Yoshiura, S., McKinley, B., Dayal, P., Pindor, B., Hutter, A., Takahashi, K., Wayth, R. B., Barry, N., Beardsley, A., Bowman, J., Byrne, R., Chokshi, A., Greig, B., Hasegawa, K., Hazelton, B. J., Howard, E., Jacobs, D., Kolopanis, M., Mitchell, D. A., Morales, M. F., Murray, S., Pober, J. C., Rahimi, M., Tingay, S. J., Webster, R. L., Wilensky, M., Wyithe, J. S. B., Zheng, Q.
The locations of Ly-$\alpha$ emitting galaxies (LAEs) at the end of the Epoch of Reionisation (EoR) are expected to correlate with regions of ionised hydrogen, traced by the redshifted 21~cm hyperfine line. Mapping the neutral hydrogen around regions
Externí odkaz:
http://arxiv.org/abs/2107.14493
Autor:
Yoshiura, S., Pindor, B., Line, J. L. B., Barry, N., Trott, C. M., Beardsley, A., Bowman, J., Byrne, R., Chokshi, A., Hazelton, B. J., Hasegawa, K., Howard, E., Greig, B., Jacobs, D., Jordan, C. H., Joseph, R., Kolopanis, M., Lynch, C., McKinley, B., Mitchell, D. A., Morales, M. F., Murray, S. G., Pober, J. C., Rahimi, M., Takahashi, K., Tingay, S. J., Wayth, R. B., Webster, R. L., Wilensky, M., Wyithe, J. S. B., Zhang, Z., Zheng, Q.
Observations in the lowest MWA band between $75-100$ MHz have the potential to constrain the distribution of neutral hydrogen in the intergalactic medium at redshift $\sim 13-17$. Using 15 hours of MWA data, we analyse systematics in this band such a
Externí odkaz:
http://arxiv.org/abs/2105.12888
Autor:
Trott, Cathryn M., Jordan, C. H., Midgley, S., Barry, N., Greig, B., Pindor, B., Cook, J. H., Sleap, G., Tingay, S. J., Ung, D., Hancock, P., Williams, A., Bowman, J., Byrne, R., Chokshi, A., Hazelton, B. J., Hasegawa, K., Jacobs, D., Joseph, R. C., Li, W., Line, J. L. B, Lynch, C., McKinley, B., Mitchell, D. A., Morales, M. F., Ouchi, M., Pober, J. C., Rahimi, M., Takahashi, K., Wayth, R. B., Webster, R. L., Wilensky, M., Wyithe, J. S. B., Yoshiura, S., Zhang, Z., Zheng, Q.
We compute the spherically-averaged power spectrum from four seasons of data obtained for the Epoch of Reionisation (EoR) project observed with the Murchison Widefield Array (MWA). We measure the EoR power spectrum over $k= 0.07-3.0~h$Mpc$^{-1}$ at r
Externí odkaz:
http://arxiv.org/abs/2002.02575
Autor:
Li, W., Pober, J. C., Barry, N., Hazelton, B. J., Morales, M. F., Trott, C. M., Lanman, A., Wilensky, M., Sullivan, I., Beardsley, A. P., Booler, T., Bowman, J. D., Byrne, R., Crosse, B., Emrich, D., Franzen, T. M. O., Hasegawa, K., Horsley, L., Johnston-Hollitt, M., Jacobs, D. C., Jordan, C. H., Joseph, R. C., Kaneuji, T., Kaplan, D. L., Kenney, D., Kubota, K., Line, J., Lynch, C., McKinley, B., Mitchell, D. A., Murray, S., Pallot, D., Pindor, B., Rahimi, M., Riding, J., Sleap, G., Steele, K., Takahashi, K., Tingay, S. J., Walker, M., Wayth, R. B., Webster, R. L., Williams, A., Wu, C., Wyithe, J. S. B., Yoshiura, S., Zheng, Q.
Publikováno v:
ApJ (2019) 887 141
The compact configuration of Phase II of the Murchison Widefield Array (MWA) consists of both a redundant subarray and pseudo-random baselines, offering unique opportunities to perform sky-model and redundant interferometric calibration. The highly r
Externí odkaz:
http://arxiv.org/abs/1911.10216
Autor:
Barry, N., Wilensky, M., Trott, C. M., Pindor, B., Beardsley, A. P., Hazelton, B. J., Sullivan, I. S., Morales, M. F., Pober, J. C., Line, J., Greig, B., Byrne, R., Lanman, A., Li, W., Jordan, C. H., Joseph, R. C., McKinley, B., Rahimi, M., Yoshiura, S., Bowman, J. D., Gaensler, B. M., Hewitt, J. N., Jacobs, D. C., Mitchell, D. A., Shankar, N. Udaya, Sethi, S. K., Subrahmanyan, R., Tingay, S. J., Webster, R. L., Wyithe, J. S. B.
Measurements of 21 cm Epoch of Reionization (EoR) structure are subject to systematics originating from both the analysis and the observation conditions. Using 2013 data from the Murchison Widefield Array (MWA), we show the importance of mitigating b
Externí odkaz:
http://arxiv.org/abs/1909.00561
Autor:
Trott, Cathryn M., Watkinson, Catherine A., Jordan, Christopher H., Yoshiura, Shintaro, Majumdar, Suman, Barry, N., Byrne, R., Hazelton, B. J., Hasegawa, K., Joseph, R., Kaneuji, T., Kubota, K., Li, W., Line, J., Lynch, C., McKinley, B., Mitchell, D. A., Morales, M. F., Murray, S., Pindor, B., Pober, J. C., Rahimi, M., Riding, J., Takahashi, K., Tingay, S. J., Wayth, R. B., Webster, R. L., Wilensky, M., Wyithe, J. S. B., Zheng, Q., Emrich, David, Beardsley, A. P., Booler, T., Crosse, B., Franzen, T. M. O., Horsley, L., Johnston-Hollitt, M., Kaplan, D. L., Kenney, D., Pallot, D., Sleap, G., Steele, K., Walker, M., Williams, A., Wu, C.
We apply two methods to estimate the 21~cm bispectrum from data taken within the Epoch of Reionisation (EoR) project of the Murchison Widefield Array (MWA). Using data acquired with the Phase II compact array allows a direct bispectrum estimate to be
Externí odkaz:
http://arxiv.org/abs/1905.07161