2017ApJ...839...25S

Query : 2017ApJ...839...25S

2017ApJ...839...25S - Astrophys. J., 839, 25-25 (2017/April-2)

Probabilistic cosmological mass mapping from weak lensing shear.

SCHNEIDER M.D., NG K.Y., DAWSON W.A., MARSHALL P.J., MEYERS J.E. and BARD D.J.

Abstract (from CDS):

We infer gravitational lensing shear and convergence fields from galaxy ellipticity catalogs under a spatial process prior for the lensing potential. We demonstrate the performance of our algorithm with simulated Gaussian-distributed cosmological lensing shear maps and a reconstruction of the mass distribution of the merging galaxy cluster Abell 781 using galaxy ellipticities measured with the Deep Lens Survey. Given interim posterior samples of lensing shear or convergence fields on the sky, we describe an algorithm to infer cosmological parameters via lens field marginalization. In the most general formulation of our algorithm we make no assumptions about weak shear or Gaussian-distributed shape noise or shears. Because we require solutions and matrix determinants of a linear system of dimension that scales with the number of galaxies, we expect our algorithm to require parallel high-performance computing resources for application to ongoing wide field lensing surveys.

Journal keyword(s): catalogs - cosmology: observations - gravitational lensing: weak - methods: data analysis - methods: statistical - surveys - surveys

Simbad objects: 1

Full paper

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	ACO 781	ClG	09 20 25.4	+30 30 07						~	167	0

Query : 2017ApJ...839...25S

Basic data :

ACO 781 -- Cluster of Galaxies
Other object types:	`ClG (2011ApJ,ACO,...)`, `C?G (2014A&A,XCLASS)`, `X (2020ApJ,2MAXI)`, `gLe (2016MNRAS)`
ICRS coord. (ep=J2000) :	`09 20 25.4 +30 30 07 (X-ray) [ ] E 2008ApJ...682..821C`
FK4 coord. (ep=B1950 eq=1950) :	`09 17 26.1 +30 42 52 [ ]`
Gal coord. (ep=J2000) :	`195.6081 +44.0717 [ ]`
Radial velocity / Redshift / cz :	`V(km/s) 75384 [~] / z(spectroscopic) 0.293 [~] / cz 87839 [~] (Opt) D 2016MNRAS.463.1929M`
Angular size (arcmin):	`9.37 9.37 0 (Xray) E` `2016MNRAS.463.1929M`

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`ACO 781`	`PLCKESZ G195.62+44.05`	`XMMXCS J092021.2+303005.7`	`[SPD2011] 1`
`BAX 140.0968+30.4376`	`PSZ1 G195.60+44.03`	`ZwCl 2298`	`[WHL2009] J092022.3+302943`
`DLSCL J0920.1+3029`	`PSZ2 G195.60+44.06`	`[B2017] 751`	`[WHL2012] J092025.8+302939`
`2MAXI J0922+301`	`PSZRX G195.59+44.07`	`[KMA2007] 140.10742+30.49406`
`MCXC J0920.4+3030`	`RXC J0920.4+3030`	`[RRB2014] RM J092025.8+302938.7`
`NSC J092017+303027`	`XCLASS 842`	`[RRB2014] RM J092030.0+302946.8`

References (167 between 1850 and 2026) (Total 167)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : ACO 781

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ACO 781 RXC J0920.4+3030

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