7.1 keV sterile neutrino constraints from X-ray observations of 33 clusters of galaxies with Chandra ACIS

F. Hofmann; J. S. Sanders; K. Nandra; N. Clerc; M. Gaspari

doi:10.1051/0004-6361/201527977

Home

All issues

Volume 592 (August 2016)

A&A, 592 (2016) A112

Full HTML

Highlight

Free Access

Table 1

Limits from merged spectra.

Merged spec.	F _X ^a	sin²(2Θ) ^b	⟨ n_H ⟩ ^c	⟨ z ⟩ ^c	^c	^c
	[10^-6 cm^-2 s^-1]	[10^-11]	[10²² cm^-2]		[10¹⁴M_⊙]	[10¹⁰M_⊙ Mpc^-2]

Mergei			0.06	0.11	2.08	0.197
Merges			0.10	0.07	1.26	0.172

Notes.

^(a)

Best fit and 3σ confidence range of a possible additional flux added by a Gaussian line at 3.55 keV.

^(b)

Mixing-angle limits (3σ confidence) for the 7.1 keV sterile neutrino decay scenario (negative mixing-angle unphysical results from allowing negative flux).

^(c)

Weighted average properties of the cluster sample weighting contributions as described in Eq. (2) in Sect. 6.2.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.