2016MNRAS.458L..84A

Query : 2016MNRAS.458L..84A

2016MNRAS.458L..84A - Mon. Not. R. Astron. Soc., 458, L84-L88 (2016/May-1)

A method for comparing non-nested models with application to astrophysical searches for new physics.

ALGERI S., CONRAD J. and VAN DYK D.A.

Abstract (from CDS):

Searches for unknown physics and decisions between competing astrophysical models to explain data both rely on statistical hypothesis testing. The usual approach in searches for new physical phenomena is based on the statistical likelihood ratio test and its asymptotic properties. In the common situation, when neither of the two models under comparison is a special case of the other i.e. when the hypotheses are non-nested, this test is not applicable. In astrophysics, this problem occurs when two models that reside in different parameter spaces are to be compared. An important example is the recently reported excess emission in astrophysical γ-rays and the question whether its origin is known astrophysics or dark matter. We develop and study a new, simple, generally applicable, frequentist method and validate its statistical properties using a suite of simulations studies. We exemplify it on realistic simulated data of the Fermi-Large Area Telescope γ-ray satellite, where non-nested hypotheses testing appears in the search for particle dark matter.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): astroparticle physics - methods: data analysis - methods: statistical - dark matter

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 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1

Query : 2016MNRAS.458L..84A

Basic data :
NAME Segue 1 -- Galaxy
Other object types: otypes_help 		G (2009ApJ), Gl? (2009MNRAS)
ICRS coord. (ep=J2000) : 		10 07 03.2 +16 04 25 [ 24500 15000 0 ] D 2011ApJ...733...46S
FK4 coord. (ep=B1950 eq=1950) : 		10 04 20.2 +16 19 05 [ 24500 15000 0 ]
Gal coord. (ep=J2000) : 		220.4882 +50.4196 [ 24500 15000 0 ]
Proper motions mas/yr : 		-1.867 -3.282 [0.110 0.102 90] C 2018ApJ...863...89S
Radial velocity / Redshift / cz : 		V(km/s) 208.5 [0.9] / z(~) 0.000696 [0.000003] / cz 208.57 [0.90]
   C 2011ApJ...733...46S
Morphological type: 		dSph D 2012AJ....144....4M
Fluxes (1) :
V 15.3 [0.8] D 2012AJ....144....4M
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NAME Segue 1 NAME Segue I

References (517 between 1850 and 2026) (Total 517)
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