A Direct Upper Limit on the Density of Cosmological Dust from the Absence of an X-ray Scattering Halo around the z=4.3 QSO 1508+5714
arXiv:astro-ph/0609589 · doi:10.1086/507667
Abstract
We report on the results of a search for an intergalactic X-ray dust scattering halo in a deep observation of the bright, high-redshift quasar QSO 1508+5714 with the Chandra X-ray Observatory. We do not detect such a halo. Our result implies an upper limit on the density of diffuse, large-grained intergalactic dust of Omega_ dust < 2 x 10^-6, assuming a characteristic grain size of 1micron. The result demonstrates the sensitivity of this technique for detecting very small amounts of intergalactic dust which are very hard to detect otherwise. This will allow us to put important constraints on systematic effects induced by extinction on the interpretation of the SN Ia Hubble Diagram, as well as on the amount and properties of cosmological dust being expelled into the intergalactic medium at early z~2 times.
arXiv comment14 pages, 2 figures. to appear in ApJ, vol. 651, Nov. 2006
References in corpus (20)
- Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
- Measurements of Omega and Lambda from 42 High-Redshift Supernovae
- Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
- A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation
- Submillimeter Galaxies
- Multi-wavelength Observations of Dusty Star Formation at Low and High Redshift
- Intergalactic Dust and Observations of Type Ia Supernovae
- High-excitation CO in a quasar host galaxy at z=6.42
- A 1.2mm MAMBO/IRAM-30m Survey of Dust Emission from the Highest Redshift PSS Quasars
- Structure of the X-ray Emission from the Jet of 3C 273
- Chandra Observations of the X-Ray Jet of 3C273
- The C IV Mass Density of the Universe at Redshift 5
- A 1.2mm MAMBO/IRAM-30m Study of Dust Emission from optically luminous z~2 Quasars
- A 250 GHz Survey of High Redshift QSOs from the Sloan Digital Sky Survey
- Quasars as probes of the submillimetre cosmos at z>5: I. Preliminary SCUBA photometry
- Soft X-ray Scattering and Halos from Dust
- An X-ray jet discovered by Chandra in the z=4.3 radio-selected quasar GB 1508+5714
- GB1508+5714: a radio-loud quasar with z=4.30 and the space density of high redshift, radio--loud quasars.
- The 3-53 keV Spectrum of the Quasar 1508+5714: X-rays from z = 4.3
- Dust emission and star formation toward a redshift 5.5 QSO
Cited by in corpus (9)
- New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
- Observational Constraints on the Nature of the Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey
- Dust Formation in Milky Way-like Galaxies
- Constraints on the Redshift Evolution of the L_X-SFR Relation from the Cosmic X-Ray Backgrounds
- X-ray Scattering Echoes and Ghost Halos from the Intergalactic Medium: Relation to the nature of AGN variability
- Combined constraints on intergalactic dust from quasar colours and the soft X-ray background
- Upper Limit on Dimming of Cosmological Sources by Intergalactic Grey Dust from the Soft X-ray Background
- Cosmological X-ray Scattering from Intergalactic Dust
- Cosmological nanolensing by dense gas clouds