205 research outputs found
Planck 2013 results. XX. Cosmology from Sunyaev-Zeldovich cluster counts
We present constraints on cosmological parameters using number counts as a
function of redshift for a sub-sample of 189 galaxy clusters from the Planck SZ
(PSZ) catalogue. The PSZ is selected through the signature of the
Sunyaev--Zeldovich (SZ) effect, and the sub-sample used here has a
signal-to-noise threshold of seven, with each object confirmed as a cluster and
all but one with a redshift estimate. We discuss the completeness of the sample
and our construction of a likelihood analysis. Using a relation between mass
and SZ signal calibrated to X-ray measurements, we derive constraints
on the power spectrum amplitude and matter density parameter
in a flat CDM model. We test the robustness of
our estimates and find that possible biases in the -- relation and the
halo mass function are larger than the statistical uncertainties from the
cluster sample. Assuming the X-ray determined mass to be biased low relative to
the true mass by between zero and 30%, motivated by comparison of the observed
mass scaling relations to those from a set of numerical simulations, we find
that , , and
. The value of
is degenerate with the mass bias; if the latter is fixed to a value
of 20% we find and a
tighter one-dimensional range . We find that the larger
values of and preferred by Planck's
measurements of the primary CMB anisotropies can be accommodated by a mass bias
of about 40%. Alternatively, consistency with the primary CMB constraints can
be achieved by inclusion of processes that suppress power on small scales
relative to the CDM model, such as a component of massive neutrinos
(abridged).Comment: 20 pages, accepted for publication by A&
Afterword: three letters
The essays consider issues of affect and emotion in terms of three early English letters - by Chaucer, the Paston family, and Henry VIII - in order to consider issues of the personal and the literary. It also comments on the volume of essays as a whole, and consider the field of the history of emotions and affect studies
A speech made by King Henry the 8th. To the House of Commons the 23. of December, 1546. And in the 38. yeare of his raigne.
A proclamation concernynge eatynge of vvhyte meates, made the. xvi. day of February, the. xxxii. yere of the reygne of the kynges most royall maiesty.
Henry by the grace of God kyng of Engl[ĂŁd] and of France, and lord of Ireland, to all and syngular archebisshops & bysshops, abbattis ... to whome these pÌsent letters shall com sendeth grettyng know ye that of late by the wyng of our humble [su]bgiette Thomas Andrew of the parisshe of Southmymes in the counte of Midd. ...
A declaration conteyning the iust causes and consyderations of this present warre with the Scottis wherin alsoo appereth the trewe & right title the Kinges Most Royall Maiesty hath to the souerayntie of Scotlande.
A famous speech of King Henry the eighth, made in the Parliament House the 24. of December, in the 37. yeare of his Majesties reigne. Anno Dom. 1545. Tending to charity and concord, and therefore necessary for men of these times.
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