A new model framework for circumgalactic Lyα radiative transfer constrained by galaxy-Lyα forest clustering

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Radiative Transfer Effects on the Lyα Forest

Strong observational evidence for a fluctuating ultraviolet background (UVB) has been accumulating through a number of studies of the H I and He II Lyα forest as well as accurate IGM metallicity measurements. UVB fluctuations could arise both from the inhomogeneous distribution of the ionizing sources and/or from radiative transfer (RT) through the filamentary IGM. In this study we investigate,...

متن کامل

A Submillimeter Galaxy Illuminating Its Circumgalactic Medium: Lyα Scattering in a Cold, Clumpy Outflow

We report the detection at 850μm of the central source in SSA22-LAB1, the archetypal ‘Lyman-α Blob’ (LAB), a 100 kpc-scale radio-quiet emission-line nebula at z = 3.1. The flux density of the source, S850 = 4.6± 1.1 mJy implies the presence of a galaxy, or group of galaxies, with a total luminosity of LIR ≈ 1012 L⊙. The position of an active source at the center of a ∼50 kpc-radius ring of line...

متن کامل

Lyα ABSORBER CORRELATIONS AND THE “BIAS” OF THE Lyα FOREST

Lyα absorber correlations contain information about the underlying density distribution associated with a particular class of absorbers. As such, they provide an opportunity to independently measure the “bias” of the Lyman alpha forest, i.e. the relationship between H I column density and underlying dark matter density. In these proceedings we use hydrodynamic simulations to investigate whether...

متن کامل

On the Small-Scale Clustering of the Lyα Forest Clouds

Recent measurements of the autocorrelation function of the Lyα clouds are analyzed from the point of view of a simple model with strong clustering on the small scales. It is shown that this toy model reproduces fairly well the important linear relation between amplitude of the absorber autocorrelation function and neutral hydrogen column density. In addition, it predicts a correct evolutionary ...

متن کامل

Structure in the Lyα Forest

The spatial distribution of Lyα forest absorption systems toward a group of 8, closely spaced QSOs has been analysed and evidence for large scale structure has been found at z = 2.8. Our technique is based on the first and second moments of the transmission probability density function which is capable of identifying and assessing the significance of regions of over-or underdense Lyα absorption...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Monthly Notices of the Royal Astronomical Society

سال: 2018

ISSN: 0035-8711,1365-2966

DOI: 10.1093/mnras/sty2214