J/MNRAS/445/2440 SN with associated Planck CMB temperatures (Yershov+, 2014)
Possible signature of distant foreground in the Planck data.
Yershov V.N., Orlov V.V., Raikov A.A.
<Mon. Not. R. Astron. Soc., 445, 2440-2445 (2014)>
=2014MNRAS.445.2440Y 2014MNRAS.445.2440Y (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae ; Redshifts
Keywords: methods: statistical - supernovae: general -
galaxies: star formation - cosmic background radiation
Abstract:
By using the Planck map of the cosmic microwave background (CMB)
radiation, we have checked and confirmed the existence of a
correlation between supernova (SN) redshifts, zSN, and CMB
temperature fluctuations at the SNe locations, TSN, which we
previously reported for the Wilkinson Microwave Anisotropy Probe data.
The Pearson correlation coefficient for the Planck data is
r=+0.38±0.08, which indicates that the correlation is statistically
significant (the signal is about 5σ above the noise level). The
correlation becomes even stronger for the Type Ia subsample of SNe,
rIa=+0.45±0.09, whereas for the rest of the SNe it is vanishing.
By checking the slopes of the regression lines TSN/zSN for
Planck's different frequency bands, we have also excluded the
possibility of this anomaly being caused by the Sunyaev-Zeldovich
effect. The remaining possibility is some, unaccounted for,
contribution to the CMB from distant (z>0.3) foreground through either
the integrated Sachs-Wolfe effect or thermal emission from
intergalactic matter.
Description:
For our analysis, we have taken the list of SNe (Bartunov, Tsvetkov &
Pavlyuk, 2007, Proc. 26th General Assembly: Highlights of Astronomy,
Vol. 14, Sternberg Astronomical Institute Supernova Catalogue, and
Radial Distribution of Supernovae in Host Galaxies. van der Hucht K.
A., editor. Cambridge: Cambridge Univ. Press; 2007. p. 316.)
maintained by the Sternberng Astronomical Institute (Moscow) at
http://www.sai.msu.su/sn/sncat which contains a large sample of SNe
with known redshifts (6365 SNe as for 2013 October).
The Planck data products were obtained from ESA's Planck Legacy
Archive (Planck Collaboration 2014) at
http://pla.esac.esa.int/pla/aio, and the software for processing these
data was adopted from the comprehensive healpix package developed by
Jet Propulsion Laboratory and available at http://healpix.jpl.nasa.gov
(Gorski et al., 2005ApJ...622..759G 2005ApJ...622..759G).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 136 6359 Catalogue of supernova stars with the associated
Planck CMB map pixel temperatures at the
supernova locations
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See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Seq Superova number in this table
6- 26 A21 --- SN Supernova standard name
28- 29 I2 h RAh Supernova right ascension (J2000)
31- 32 I2 min RAm Supernova right ascension (J2000)
34- 38 F5.2 s RAs Supernova right ascension (J2000)
40 A1 --- DE- Declination sign (J2000)
41- 42 I2 deg DEd Declination (J2000)
44- 45 I2 arcmin DEm Declination (J2000)
47- 50 F4.1 arcsec DEs Declination (J2000)
52- 56 F5.3 --- z Supernova redshift
58- 63 F6.3 mK Tcmb Planck CMB map pixel temperature at the
supernova location on the sky
65- 69 F5.3 mK e_Tcmb Variance of Tcmb from the Planck CMB map
71- 78 F8.4 deg GLON Supernova galactic longitude
80- 87 F8.4 deg GLAT Supernova galactic latitude
89-118 A30 --- Gal Name of the host galaxy (if available)
120-124 A5 --- GType Type of the host galaxy (if available)
126 I1 --- Mask [0/1] Mask value from the combined Planck
galactic plane and point-source masks
128-136 A9 --- SNType Type of the supernova (if available)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 20-May-2015