The C IV Forest as a Probe of Baryon Acoustic Oscillations
M. Pieri. (2014)cite arxiv:1404.4569Comment: 6 pages, 3 figures. Submitted to MNRAS letters.
Аннотация
In light of recent successes in measuring baryon acoustic oscillations in
quasar absorption using the Lyman-alpha (Ly-alpha) transition, I explore the
possibility of using the 1548 Ang transition of triply-ionized carbon (C IV) as
a tracer. While the Ly-alpha forest is a more sensitive tracer of intergalactic
gas, it is limited by the fact that it can only be measured in the optical
window at redshifts z > 2. Quasars are challenging to identify and observe at
these high-redshifts, but the C IV forest can be probed down to redshifts z =
1.3, taking full advantage of the peak in the redshift distribution of quasars
that can be targeted with high efficiency.
I explore the strength of the C IV absorption signal and show that the
absorbing population on the red side of the Ly-alpha emission line is dominated
by C IV. As a consequence, I argue that forthcoming surveys will have a
sufficient increase in quasar number density to offset the lower sensitivity of
the C IV forest and provide competitive precision using both the C IV
autocorrelation and the C IV-quasar cross correlation at <z> = 1.6.
Описание
[1404.4569] The C IV Forest as a Probe of Baryon Acoustic Oscillations
%0 Generic
%1 pieri2014forest
%A Pieri, Matthew M.
%D 2014
%K absorption civ
%T The C IV Forest as a Probe of Baryon Acoustic Oscillations
%U http://arxiv.org/abs/1404.4569
%X In light of recent successes in measuring baryon acoustic oscillations in
quasar absorption using the Lyman-alpha (Ly-alpha) transition, I explore the
possibility of using the 1548 Ang transition of triply-ionized carbon (C IV) as
a tracer. While the Ly-alpha forest is a more sensitive tracer of intergalactic
gas, it is limited by the fact that it can only be measured in the optical
window at redshifts z > 2. Quasars are challenging to identify and observe at
these high-redshifts, but the C IV forest can be probed down to redshifts z =
1.3, taking full advantage of the peak in the redshift distribution of quasars
that can be targeted with high efficiency.
I explore the strength of the C IV absorption signal and show that the
absorbing population on the red side of the Ly-alpha emission line is dominated
by C IV. As a consequence, I argue that forthcoming surveys will have a
sufficient increase in quasar number density to offset the lower sensitivity of
the C IV forest and provide competitive precision using both the C IV
autocorrelation and the C IV-quasar cross correlation at <z> = 1.6.
@misc{pieri2014forest,
abstract = {In light of recent successes in measuring baryon acoustic oscillations in
quasar absorption using the Lyman-alpha (Ly-alpha) transition, I explore the
possibility of using the 1548 Ang transition of triply-ionized carbon (C IV) as
a tracer. While the Ly-alpha forest is a more sensitive tracer of intergalactic
gas, it is limited by the fact that it can only be measured in the optical
window at redshifts z > 2. Quasars are challenging to identify and observe at
these high-redshifts, but the C IV forest can be probed down to redshifts z =
1.3, taking full advantage of the peak in the redshift distribution of quasars
that can be targeted with high efficiency.
I explore the strength of the C IV absorption signal and show that the
absorbing population on the red side of the Ly-alpha emission line is dominated
by C IV. As a consequence, I argue that forthcoming surveys will have a
sufficient increase in quasar number density to offset the lower sensitivity of
the C IV forest and provide competitive precision using both the C IV
autocorrelation and the C IV-quasar cross correlation at <z> = 1.6.},
added-at = {2014-04-18T12:07:53.000+0200},
author = {Pieri, Matthew M.},
biburl = {https://www.bibsonomy.org/bibtex/2a37697f7cc0119c8bda99762d5e2b2fe/miki},
description = {[1404.4569] The C IV Forest as a Probe of Baryon Acoustic Oscillations},
interhash = {31c0ab2b03e09cbcd42fba3addd83da7},
intrahash = {a37697f7cc0119c8bda99762d5e2b2fe},
keywords = {absorption civ},
note = {cite arxiv:1404.4569Comment: 6 pages, 3 figures. Submitted to MNRAS letters},
timestamp = {2014-04-18T12:07:53.000+0200},
title = {The C IV Forest as a Probe of Baryon Acoustic Oscillations},
url = {http://arxiv.org/abs/1404.4569},
year = 2014
}