Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Updated bounds on sum of neutrino masses in various cosmological scenarios
Harish Chandra Res Inst, Chhatnag Rd, Allahabad 211019, Uttar Pradesh, India.;Homi Bhabha Natl Inst, Training Sch Complex, Bombay 400094, Maharashtra, India..
KTH, School of Engineering Sciences (SCI), Physics. Harish Chandra Res Inst, Chhatnag Rd, Allahabad 211019, Uttar Pradesh, India.;Homi Bhabha Natl Inst, Training Sch Complex, Bombay 400094, Maharashtra, India..
2018 (English)In: Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, E-ISSN 1475-7516, no 9, article id 017Article in journal (Refereed) Published
Abstract [en]

We present strong bounds on the sum of three active neutrino masses ( Sigma m(v)) using selected cosmological datasets and priors in various cosmological models. We use the following baseline datasets: Cosmic Microwave Background (CMB) temperature data from Planck 2015, Baryon Acoustic Oscillations measurements from SDSS-III BOSS DR12, the newly released Type Ia supernovae (SNe Ia) dataset from Pantheon Sample, and a prior on the optical depth to reionization from 2016 Planck Intermediate results. We constrain cosmological parameters with these datasets with a Bayesian analysis in the background of Lambda CDM model with 3 massive active neutrinos. For this minimal Lambda CDM + Sigma m(v) model we find a upper bound of Sigma m(v) < 0.152 eV at 95% C.L. Adding the high-l polarization data from Planck strengthens this bound to Sigma m(v) < 0.118 eV, which is very close to the minimum required mass of Sigma m(v) similar or equal to 0.1 eV for inverted hierarchy. This bound is reduced to Sigma m(v) < 0.110 eV when we also vary r, the tensor to scalar ratio (Lambda CDM + r + Sigma m(v) model), and add an additional dataset, BK14, the latest data released from the Bicep-Keck collaboration (which we add only when r is varied). This bound is further reduced to Sigma m(v) < 0.101 eV in a cosmology with non-phantom dynamical dark energy (w(0)w(a)CDM + Sigma m(v) model with w(z) >= -1 for all z). Considering the w0waCDM + r + Sigma m(v) model and adding the BK14 data again, the bound can be even further reduced to Sigma m(v) < 0.093 eV. For the w0waCDM + Sigma m(v) model P without any constraint on w(z), the bounds however relax to Sigma m(v) < 0.276 eV. Adding a prior on the Hubble constant (H-0 = 73.24 +/- 1.74 km/sec/Mpc) from Hubble Space Telescope (HST), the above mentioned bounds further improve to Sigma m(v) < 0.117 eV, 0.091 eV, 0.085 eV, 0.082 eV, 0.078 eV and 0.247 eV respectively. This substantial improvement is mostly driven by a more than 3 sigma tension between Planck 2015 and HST measurements of H-0 and should be taken cautiously.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2018. no 9, article id 017
Keywords [en]
neutrino masses from cosmology, cosmological parameters from CMBR
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-235451DOI: 10.1088/1475-7516/2018/09/017ISI: 000444424700006Scopus ID: 2-s2.0-85054538225OAI: oai:DiVA.org:kth-235451DiVA, id: diva2:1251580
Note

QC 20180927

Available from: 2018-09-27 Created: 2018-09-27 Last updated: 2019-03-18Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Choubey, Sandhya
By organisation
Physics
In the same journal
Journal of Cosmology and Astroparticle Physics
Astronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 60 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf