Lighthouses of the Universe: The Most Luminous Celestial Objects and Their Use for Cosmology
Proceedings of the MPA/ESO/MPE/USM Joint Astronomy Conference Held in Garching, Germany, 6-10 August 2001
Page
%P
-
Article
Cygnus X-3 revealed as a Galactic ultraluminous X-ray source by IXPE
The accretion of matter by compact objects can be inhibited by radiation pressure if the luminosity exceeds a critical value known as the Eddington limit. The discovery of ultraluminous X-ray sources has shown...
-
Article
Evidence for heavy-seed origin of early supermassive black holes from a z ≈ 10 X-ray quasar
Observations of quasars reveal that many supermassive black holes (BHs) were in place less than 700 Myr after the Big Bang. However, the origin of the first BHs remains a mystery. Seeds of the first BHs are po...
-
Reference Work Entry In depth
AGN Feedback in Groups and Clusters of Galaxies
Active galactic nuclei (AGN) feedback stands for the dramatic impact that a supermassive black hole can make on its environment. It has become an essential element of models that describe the formation and evo...
-
Article
X-ray polarization evidence for a 200-year-old flare of Sgr A*
The centre of the Milky Way Galaxy hosts a black hole with a solar mass of about 4 million (Sagittarius A* (Sgr A)) that is very quiescent at present with a luminosity many orders of magnitude below those of acti...
-
Article
Open AccessForming intracluster gas in a galaxy protocluster at a redshift of 2.16
Galaxy clusters are the most massive gravitationally bound structures in the Universe, comprising thousands of galaxies and pervaded by a diffuse, hot intracluster medium (ICM) that dominates the baryonic cont...
-
Living Reference Work Entry In depth
AGN Feedback in Groups and Clusters of Galaxies
Active galactic nuclei (AGN) feedback stands for the dramatic impact that a supermassive black hole can make on its environment. It has become an essential element of models that describe the formation and evo...
-
Article
Open AccessMicrowave spectro-polarimetry of matter and radiation across space and time
This paper discusses the science case for a sensitive spectro-polarimetric survey of the microwave sky. Such a survey would provide a tomographic and dynamic census of the three-dimensional distribution of hot...
-
Article
Open AccessA space mission to map the entire observable universe using the CMB as a backlight
This Science White Paper, prepared in response to the ESA Voyage 2050 call for long-term mission planning, aims to describe the various science possibilities that can be realized with an L-class space observat...
-
Article
Open AccessA polarized view of the hot and violent universe
X-ray polarimetry has long been considered the ‘holy grail’ of X-ray astronomy. Fortunately, after a silence of more than 40 years, the field is now rejuvenating. In fact, an X-ray polarimeter onboard a Cube-s...
-
Article
Constraining Gas Motions in the Intra-Cluster Medium
The detailed velocity structure of the diffuse X-ray emitting intra-cluster medium (ICM) remains one of the last missing key ingredients in understanding the microphysical properties of these hot baryons and c...
-
Article
Astrophysics with the Spatially and Spectrally Resolved Sunyaev-Zeldovich Effects
In recent years, observations of the Sunyaev-Zeldovich (SZ) effect have had significant cosmological implications and have begun to serve as a powerful and independent probe of the warm and hot gas that pervad...
-
Article
X-Ray Spectroscopy of Galaxy Clusters: Beyond the CIE Modeling
X-ray spectra of galaxy clusters are dominated by the thermal emission from the hot intracluster medium. In some cases, besides the thermal component, spectral models require additional components associated, ...
-
Article
XIPE: the X-ray imaging polarimetry explorer
Abstract X-ray polarimetry, sometimes alone, and sometimes coupled to spectral and temporal variability measurements and to imaging, allows a wealth of physical phenomena in astrophysics ...
-
Article
Resonant Scattering of X-ray Emission Lines in the Hot Intergalactic Medium
While very often a hot intergalactic medium (IGM) is optically thin to continuum radiation, the optical depth in resonant lines can be of order unity or larger. Resonant scattering in the brightest X-ray emiss...
-
Chapter and Conference Paper
The Cluster Abell 85 and its X-ray Filament Revisited by Chandra and XMM-Newton
We have observed with XMM-Newton the extended 4 Mpc filament detected by the ROSAT PSPC south east of the cluster of galaxies Abell 85. We confirm the presence of an extended feature and find that the X-ray em...
-
Book and Conference Proceedings
-
Chapter and Conference Paper
Bobble-Heated Cooling Flows
We speculate on the possibility that radiative energy losses of the gas in cooling flows are balanced by the (mechanical) energy input from a central supermassive black hole. We argue that the efficiency of th...
-
Chapter and Conference Paper
Chandra Observations of the Components of Clusters, Groups, and Galaxies and Their Interactions
We discuss two themes from Chandra observations of galaxies, groups, and clusters. First, we review the merging process as seen through the high angular resolution of Chandra. We present examples of sharp, edg...
