2018MNRAS.481..970R

Query : 2018MNRAS.481..970R

2018MNRAS.481..970R - Mon. Not. R. Astron. Soc., 481, 970-980 (2018/November-3)

Non-Gaussianity of diffuse Galactic synchrotron emission at 408 MHz.

RANA S., GHOSH T., BAGLA J.S. and CHINGANGBAM P.

Abstract (from CDS):

Diffuse Galactic emission at low frequencies is a major contaminant for studies of redshifted 21 cm line studies. Removal of these foregrounds is essential for exploiting the signal from neutral hydrogen at high redshifts. Analysis of foregrounds and its characteristics is thus of utmost importance. It is customary to test efficacy of foreground removal techniques using simulated foregrounds. Most simulations assume that the distribution of the foreground signal is a Gaussian random field. In this work, we test this assumption by computing the binned bispectrum for the all-sky 408 MHz map. This is done by applying different brightness temperature (T) thresholds in order to assess whether the cooler parts of the sky have different characteristics. We find that regions with a low-brightness temperature T < 25 K indeed have smaller departures from a Gaussian distribution. Therefore, these regions of the sky are ideal for future H I intensity mapping surveys.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): surveys - cosmic background radiation - diffuse radiation - cosmology: observations

Simbad objects: 1

goto Full paper

goto View the references in ADS

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 NAME Loop I SR? 15 01 -38.7           ~ 414 2

Query : 2018MNRAS.481..970R

Basic data :
NAME Loop I -- SuperNova Remnant Candidate
Other object types: otypes_help 		SR? ([BHS71]), Rad (2015MNRAS)
ICRS coord. (ep=J2000) : 		15 01 22.4 -38 42 24 (Radio) [ ] E 2015MNRAS.452..656V
FK4 coord. (ep=B1950 eq=1950) : 		14 58 10.9 -38 30 35 [ ]
Gal coord. (ep=J2000) : 		329.0000 +17.5000 [ ]
Angular size (arcmin): 		3480 3480 0 (Rad) E 2015MNRAS.452..656V
SIMBAD within arcmin
Overlay Simbad points in this preview
Back
All CDSPortal (CDSPortal)
Send to sendBySAMP sendBySAMP
sedIcon
within arcsec sed-help-icon
notes:

Identifiers (3) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NAME Loop 1 NAME Loop I [BHS71] Loop I

References (414 between 1850 and 2026) (Total 414)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

The annotation server is currently not available. Sorry for any inconvenience

To bookmark this query, right click on this link: simbad:objects in 2018MNRAS.481..970R and select 'bookmark this link' or equivalent in the popup menu