Max Planck Institute for Extraterrestrial Physics

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First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole

Abstract When surrounded by a transparent emission region, black holes are expected to reveal a dark shadow caused by gravitational light bending and photon capture at the event...

The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Data Releases 10 and 11 Galaxy samples

We present a one per cent measurement of the cosmic distance scale from the detections of the baryon acoustic oscillations (BAO) in the clustering of galaxies from the Baryon Os...

THE NINTH DATA RELEASE OF THE SLOAN DIGITAL SKY SURVEY: FIRST SPECTROSCOPIC DATA FROM THE SDSS-III BARYON OSCILLATION SPECTROSCOPIC SURVEY

ABSTRACT The Sloan Digital Sky Survey III (SDSS-III) presents the first spectroscopic data from the Baryon Oscillation Spectroscopic Survey (BOSS). This ninth data release (DR9)...

The universal galaxy cluster pressure profile from a representative sample of nearby systems (REXCESS) and the<i>Y</i>_SZ–<i>M</i>₅₀₀relation

We investigate the regularity of cluster pressure profiles with REXCESS, a representative sample of 33 local (z &amp;lt; 0.2) clusters drawn from the REFLEX catalogue and observ...

The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Data Release 9 spectroscopic galaxy sample

We present measurements of galaxy clustering from the Baryon Oscillation\nSpectroscopic Survey (BOSS), which is part of the Sloan Digital Sky Survey III\n(SDSS-III). These use t...

Cosmological implications of baryon acoustic oscillation measurements

Here, we derive constraints on cosmological parameters and tests of dark energy models from the combination of baryon acoustic oscillation (BAO) measurements with cosmic microwa...

The structural and scaling properties of nearby galaxy clusters

Using a sample of ten nearby (z< 0.15), relaxed galaxy clusters in the temperature range [2-9] keV, we have investigated the scaling relation between the mass at various density...

Calibration of the galaxy cluster <i>M</i>₅₀₀–<i>Y</i>$_{\sf X}$ relation with XMM-Newton

The quantity Y_ X, the product of the X-ray temperature T_ X and gas mass M_ g, has recently been proposed as a robust low-scatter mass indicator for galaxy clusters. Using prec...

Confidence levels of evolutionary synthesis models

In terms of statistical fluctuations, stellar population synthesis models are only asymptotically correct in the limit of a large number of stars, where sampling errors become a...