کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1780423 | 1523807 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Probing reionization with the cosmological proximity effect and high-redshift supernovae rates
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
نجوم و فیزیک نجومی
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چکیده انگلیسی
We develop and assess the potential of several powerful techniques, designed to investigate the details of reionization. First, we present a procedure to probe the neutral fraction, xHI, using the Lyman α transmission statistics of high-redshift (z â³Â 6) sources. We find that only tens of bright quasar spectra could distinguish between xHI â¼Â 1 and xHI â²Â 10â2. A rudimentary application of such a technique on quasar SDSS J1030+0524 has yielded compelling evidence of a large neutral fraction (xHI â³Â 0.2) at z â¼Â 6. We also generate the observable, high-z supernovae (SNe) rates and quantify the prospects of detecting the suppression of star-formation in low-mass galaxies at reionization from such SNe rates, specifically from those obtainable from the James Webb Space Telescope (JWST). Our analysis suggests that searches for SNe could yield thousands of SNe per unit redshift at z â¼Â 6, and be a valuable tool at studying reionization features and feedback effects out to z â²Â 13.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy Reviews - Volume 50, Issues 1â3, March 2006, Pages 146-151
Journal: New Astronomy Reviews - Volume 50, Issues 1â3, March 2006, Pages 146-151
نویسندگان
Andrei Mesinger,