2013MNRAS.433..639P

Query : 2013MNRAS.433..639P

2013MNRAS.433..639P - Mon. Not. R. Astron. Soc., 433, 639-647 (2013/July-3)

A simulation-calibrated limit on the HI power spectrum from the GMRT Epoch of Reionization experiment.

PACIGA G., ALBERT J.G., BANDURA K., CHANG T.-C., GUPTA Y., HIRATA C., ODEGOVA J., PEN U.-L., PETERSON J.B., ROY J., SHAW J.R., SIGURDSON K. and VOYTEK T.

Abstract (from CDS):

The Giant Metrewave Radio Telescope Epoch of Reionization experiment is an ongoing effort to measure the power spectrum from neutral hydrogen at high redshift. We have previously reported an upper limit of (70 mK)2 at wavenumbers of k ~ 0.65hMpc-1 using a basic piecewise-linear foreground subtraction. In this paper, we explore the use of a singular value decomposition to remove foregrounds with fewer assumptions about the foreground structure. Using this method, we also quantify, for the first time, the signal loss due to the foreground filter and present new power spectra adjusted for this loss, providing a revised measurement of a 2σ upper limit at (248 mK)2 for k = 0.50hMpc-1. While this revised limit is larger than previously reported, we believe it to be more robust and still represents the best current constraint on reionization at z ~ 8.6.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): intergalactic medium - cosmology: observations - diffuse radiation - radio lines: general

Simbad objects: 1

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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 PSR B0823+26 Psr 08 26 51.5068 +26 37 21.297           ~ 541 1

Query : 2013MNRAS.433..639P

Basic data :
PSR B0823+26 -- Pulsar
Other object types: otypes_help 		Rad (5C,7C,...), Psr (PSR,PULS), ev (2011ApJ)
ICRS coord. (ep=J2000) : 		08 26 51.5068 +26 37 21.297 (Radio) [ ] C 2019ApJ...875..100D
FK4 coord. (ep=B1950 eq=1950) : 		08 23 50.4574 +26 47 19.895 [ ]
Gal coord. (ep=J2000) : 		196.9637016 +31.7426249 [ ]
Proper motions mas/yr : 		62.994 -96.733 [0.021 0.085 90] B 2019ApJ...875..100D
Parallaxes (mas): 		2.01 [0.013] B 2019ApJ...875..100D
Angular size (arcmin): 		0.0935 0.0887 1 (Rad) D 2012yCat.8090....0B
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Identifiers (10) :
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PSR B0823+26 7C 082350.29+264714.00 GLEAM J082651+263715 PULS AP 0823+26
5C 7.256 FIRST J082651.4+263722 NVSS J082651+263721
7C 082350.20+264632.00 GAL 197.0+31.7 PSR J0826+2637

References (541 between 1850 and 2026) (Total 541)
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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Distance : 1    Plx : 2    PM : 1   

   

Observing logs
XMM : 1   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : PSR B0823+26

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5C 7.256 FIRST J082651.4+263722 NVSS J082651+263721

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