REVIEW 9 cited by
Where are the Baryons?
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
abstract
New, high resolution, large-scale, cosmological hydrodynamic galaxy formation simulations of a standard cold dark matter model (with a cosmological constant) are utilized to predict the distribution of baryons at the present and at moderate redshift. It is found that the average temperature of baryons is an increasing function of time, with most of the baryons at the present time having a temperature in the range 10^{5-7} K. Thus, not only is the universe dominated by dark matter, but more than one half of the normal matter is yet to be detected. Detection of this warm/hot gas poses an observational challenge, requiring sensitive EUV and X-ray satellites. Signatures include a soft, cosmic X-ray background, apparent warm components in hot clusters due to both intrinsic warm intra-cluster gas and warm inter-cluster gas projected onto clusters along the line of sight, absorption lines in X-ray and UV quasar spectra [e.g., O VI (1032,1038)A lines, OVII 574 eV line], strong emission lines (e.g., O VIII 653 eV line) and low redshift, broad, low column density $\lya$ absorption lines. We estimate that approximately 1/4 of the extragalactic soft X-ray background (SXRB) (at 0.7 keV) arises from the warm/hot gas, half of it coming from $z<0.65$ and three-quarters from $z<1.00$, so the source regions should be identifiable on deep optical images.
Forward citations
Cited by 9 Pith papers
-
Enabling Cosmic Web Analysis at Gigaparsec Scales: A Multi Block Approach for DisPerSE
A circumsphere-filtered, block-wise 'frozen-core' tiling lets DisPerSE map filaments at gigaparsec scales, yielding a 92-million-halo filament catalogue and a mass-connectivity power law A≈0.27-0.32.
-
Tracing cosmic gas in filaments and halos: Low-redshift insights from the kinematic Sunyaev-Zel'dovich effect
A 4-sigma kinematic Sunyaev-Zel'dovich quadrupole detection shows gas around low-redshift galaxy groups is aligned with cosmic filaments, the first such kSZ measurement.
-
Two new highly scattered fast radio bursts: evidence for scatter broadening by the circumsource medium
FRB240312D is the first highly scattered FRB whose scattering screen is localized to within about 8 pc of the source, with the two new bursts implying a rate consistent with shorter FRBs.
-
A study of the large-scale formation in the environment of A3266: Infalling groups, filaments, and a premerger cold front
A 3.6σ X-ray filament of length ~1.1 Mpc connects A3266 to a cool-core NW group that hosts a premerger cold front, with filament gas hotter and denser than pristine WHIM.
-
Thermal Sunyaev-Zel'dovich cross-correlations with unWISE galaxies: disentangling radio contamination, dust properties, and electron pressure
Radio contamination must be jointly fit with tSZ and CIB in unWISE-Planck/ACT cross-spectra; its inclusion yields positive signals to ℓ ≃ 6000 that match a two-parameter generalized NFW pressure profile.
-
FLAMINGO: The thermal history of the Universe from tSZ effect cross-correlations and its dependencies on cosmology and baryon physics
tSZ cross-correlations with large-scale structure tracers prefer low S8 and strong baryonic feedback, yielding S8 = 0.72 and low group baryon fraction in FLAMINGO simulations.
-
Microwave Spectro-Polarimetry of Matter and Radiation across Space and Time
This white paper proposes a large space mission combining a polarized imager, a filter-bank spectrometer, and absolute spectrometers to map the microwave sky from 10 to 2000 GHz and probe cosmology across cosmic time.
-
New Horizons in Cosmology with Spectral Distortions of the Cosmic Microwave Background
A white paper advocating for a CMB spectral distortion mission to detect predicted mu, y, and recombination signals and probe inflation, dark matter, and particle physics.
-
The Intergalactic Medium
A review chapter of the intergalactic medium: its density, temperature, ionization state, and observation via quasar absorption lines, without a new research result.
Discussion (0). Continue with ORCID to comment.