The Study of Circumgalactic Medium with Quasar Pairs

Abstract

We have collected 10025 foreground-background quasar pairs with projected distances $d_p<500$ kpc from the large quasar catalog of the SDSS DR16Q. We investigate the properties of the Mg II absorption lines with $W_r>0.15$ Å around foreground quasars, including both the LOS (line-of-sights of foreground quasars) and transverse (TRA, perpendicular to the LOS) absorptions. Both the equivalent width (the correlation coefficient $\rho =-0.915$ and the probability $P<10^{-4}$ of no correlation) and incident rate ($\rho =-0.964$ and $P<10^{-6}$) of TRA \Mgii\ absorption lines are obviously anti-correlated with projected distance. The incident rate of TRA \Mgii\ absorption lines is obviously ($>4\sigma$) greater than that of LOS \Mgii\ absorption lines at projected distances $d_p<200$ kpc, while the TRA and LOS \Mgii\ both have similar ($<3\sigma$) incident rates at scales $d_p>200$ kpc. The anisotropic radiation from quasars would be the most possible interpretation for the anisotropic absorption around quasars. This could also indicate that the quasar radiation is not obviously impacting the gas halos of quasars at scales $d_p>200$ kpc.

arXiv comment15 pages, Accepted in ApJS

References in corpus (92)

• The Sloan Digital Sky Survey: Technical Summary
• The Seventh Data Release of the Sloan Digital Sky Survey
• Cosmic Star Formation History
• The 2.5 m Telescope of the Sloan Digital Sky Survey
• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• A Catalog of Quasar Properties from SDSS DR7
• The Circumgalactic Medium
• The Multi-Object, Fiber-Fed Spectrographs for SDSS and the Baryon Oscillation Spectroscopic Survey
• The Structure and Kinematics of the Circum-Galactic Medium from Far-UV Spectra of z~2-3 Galaxies
• The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Overview and Early Data
• A Structure for Quasars
• The Sloan Digital Sky Survey Quasar Catalog: Sixteenth Data Release
• A cosmic web filament revealed in Lyman-alpha emission around a luminous high-redshift quasar
• The radial and azimuthal profiles of Mg II absorption around 0.5 < z < 0.9 zCOSMOS galaxies of different colors, masses and environments
• An Empirical Characterization of Extended Cool Gas Around Galaxies Using MgII Absorption Features
• Ubiquitous giant Ly $\alpha$ nebulae around the brightest quasars at $z\sim 3.5$ revealed with MUSE
• Improved redshifts for SDSS quasar spectra
• Quasar Quartet Embedded in Giant Nebula Reveals Rare Massive Structure in Distant Universe
• The JHU-SDSS metal absorption line catalog: redshift evolution and properties of Mg II absorbers
• QSO MUSEUM I: A sample of 61 extended Ly$\alpha$-emission nebulae surrounding $z\sim 3$ quasars
• Quasars Probing Quasars I: Optically Thick Absorbers Near Luminous Quasars
• Quasars Probing Quasars VI. Excess HI Absorption Within One Proper Mpc of z~2 Quasars
• Quasars Probing Quasars II: The Anisotropic Clustering of Optically Thick Absorbers around Quasars
• On the Incidence and Kinematics of Strong Mg II Absorbers
• IGM Emission Observations with the Cosmic Web Imager: I. The Circum-QSO Medium of QSO 1549+19, and Evidence for a Filamentary Gas Inflow
• What Determines the Incidence and Extent of MgII Absorbing Gas Around Galaxies?
• Quasars Probing Quasars VII. The Pinnacle of the Cool Circumgalactic Medium Surrounds Massive z~2 Galaxies
• The circumgalactic medium of eBOSS emission line galaxies: signatures of galactic outflows in gas distribution and kinematics
• Evolution of the Cool Gas in the Circumgalactic Medium (CGM) of Massive Halos -- A Keck Cosmic Web Imager (KCWI) Survey of Ly$\alpha$ Emission around QSOs at $z\approx 2$
• The large and small scale properties of the intergalactic gas in the Slug Ly-alpha nebula revealed by MUSE HeII emission observations
• Inspiraling Halo Accretion Mapped in Lyman-$\alpha$ Emission around a $z\sim 3$ Quasar
• Morphological Properties of z~0.5 Absorption-Selected Galaxies: The Role of Galaxy Inclination
• Quasars Probing Quasars IV: Joint Constraints on the Circumgalactic Medium from Absorption and Emission
• The REQUIEM Survey I: A Search for Extended Ly-Alpha Nebular Emission Around 31 z>5.7 Quasars
• Narrow associated QSO absorbers: clustering, outflows and the line-of-sight proximity effect
• Large scale outflows from z ~ 0.7 starburst galaxies identified via ultra-strong MgII quasar absorption lines
• Probing star formation across cosmic time with absorption line systems
• MUSE Analysis of Gas around Galaxies (MAGG) -- II: Metal-enriched halo gas around z~1 galaxies
• A Substantial Mass of Cool, Metal-Enriched Gas Surrounding the Progenitors of Modern-Day Ellipticals
• The Large-scale Distribution of Cool Gas around Luminous Red Galaxies
• The Baryon Content of Dark Matter Halos: Empirical Constraints from MgII Absorbers
• Rest-frame Optical Properties of Luminous 1.5<z<3.5 Quasars: the Hbeta-[OIII] Region
• MUSE Analysis of Gas around Galaxies (MAGG) -- III: The gas and galaxy environment of z = 3-4.5 quasars
• Circumgalactic Mg II Emission from an Isotropic Starburst Galaxy Outflow Mapped by KCWI
• Quasars Probing Quasars VIII. The Physical Properties of the Cool Circumgalactic Medium Surrounding z ~ 2-3 Massive Galaxies Hosting Quasars
• A Survey of MgII Absorption at 2 < z < 6 with Magellan / FIRE: I: Sample and Evolution of the MgII Frequency
• A Complete Census of Circumgalactic MgII at Redshift z<~ 0.5
• Precious Metals in SDSS Quasar Spectra I: Tracking the Evolution of Strong, 1.5 < z < 4.5 CIV Absorbers with Thousands of Systems
• Kinematic alignment of non-interacting CALIFA galaxies: Quantifying the impact of bars on stellar and ionised gas velocity field orientations
• On the Halo Occupation of Dark Baryons
• The MUSE Ultra Deep Field (MUDF). II. Survey design and the gaseous properties of galaxy groups at 0.5 < z < 1.5
• QSO Absorption Lines from QSOs
• Mapping the Lyman-Alpha Emission Around a z~6.6 QSO with MUSE: Extended Emission and a Companion at Close Separation
• Variation of ionizing continuum: the main driver of Broad Absorption Line Variability
• On the origin of excess cool gas in quasar host halos
• Characterizing the abundance, properties, and kinematics of the cool circumgalactic medium of galaxies in absorption with SDSS DR16
• The Self-Similarity of the Circumgalactic Medium with Galaxy Virial Mass: Implications for Cold-Mode Accretion
• A Correlation Between Galaxy Morphology and MgII Halo Absorption Strength
• MUSE Analysis of Gas around Galaxies (MAGG) -- IV: The gaseous environment of $z\sim$ 3-4 Lyman-alpha emitting galaxies
• The FLASHES Survey I: Integral Field Spectroscopy of the CGM around 48 $z=2.3-3.1$ QSOs
• Metal enrichment in the circumgalactic medium and Lyα haloes around quasars at z $\sim$3
• On the link between associated MgII absorbers and star formation in quasar hosts
• The extent of the MgII absorbing circum-galactic medium of quasars
• MUSEQuBES: Characterizing the circumgalactic medium of redshift $\approx 3.3$ Ly$\alpha$ emitters
• On the cool gaseous haloes of quasars
• Ly$\alpha$ Halos Around $z\sim 6$ Quasars
• Evidence for quasar fast outflows being accelerated at the scale of tens of parsecs
• A Comparison of Circumgalactic MgII Absorption between the TNG50 Simulation and the MEGAFLOW Survey
• Extended and broad Lyman alpha emission around a BAL quasar at z~5
• Lyman Alpha and MgII as Probes of Galaxies and their Environments
• Metal Absorption Systems in Spectra of Pairs of QSOs
• Morphological and Rotation Structures of Circumgalactic Mg II Gas in the EAGLE Simulation and the Dependence on Galaxy Properties
• Quasars Probing Quasars IX. The Kinematics of the Circumgalactic Medium Surrounding z ~ 2 Quasars
• The CGM at Cosmic Noon with KCWI: Outflows from a Star-forming Galaxy at z=2.071
• An IFU View of the Active Galactic Nuclei in MaNGA Galaxy Pairs
• Modeling the Infrared Reverberation Response of the Circumnuclear Dusty Torus in AGN: The Effects of Cloud Orientation and Anisotropic Illumination
• Analysis of Ly $\alpha$ absorption lines in the vicinity of QSOs
• SDSS-IV MaNGA: Global Properties of Kinematically Misaligned Galaxies
• A Complex Multiphase DLA Associated with a Compact Group at z=2.431 Traces Accretion, Outflows, and Tidal Streams
• Observations of Mg II Absorption Near z ~ 1 Galaxies Selected From The DEEP2 Redshift Survey
• Into the Lyα jungle: exploring the circumgalactic medium of galaxies at z ~ 4-5 with MUSE
• Average [O II] nebular emission associated with Mg II absorbers: Dependence on Fe II absorption
• Probing the environment of high-z quasars using the proximity effect in projected quasar pairs
• The environmental dependence of neutral hydrogen in the GIMIC simulations
• Searching for MgII absorbers in and around galaxy clusters
• Collective properties of quasar narrow associated absorption lines
• The circum-galactic medium of quasars: CIV absorption systems
• The environment of low redshift quasar pairs
• Narrow C IV absorption doublets on quasar spectra of the Baryon Oscillation Spectroscopic Survey
• Large-scale Dynamics of Winds Driven by Line Force from a Thin Accretion Disk
• Probing the circumgalactic medium of active galactic nuclei with background quasars
• The detections of inflowing gas from narrow absorption lines at the parsec scale

Cited by in corpus (3)

• Discovery of 19 strongly-lensed quasars, dual and projected quasars in DESI-LS
• The Detection Rate of Associated \mgii\ Absorption Lines in Quasars Depends on Their Radio Emission
• Circumgalactic medium of quasar host galaxies at 0.4<z<0.8 probed by strong Mg II absorption