Related papers: Type Ia Supernovae as Extragalactic Distance Indic…

Conformal Cosmological Model Parameters with Distant SNe Ia Data: "gold" and "silver"

Assuming that supernovae type Ia (SNe Ia) are standard candles one could use them to test cosmological theories. The Hubble Space Telescope team analyzed 186 SNe Ia\cite{Riess_04} to test the Standard Cosmological model (SC) associated with…

General Relativity and Quantum Cosmology · Physics 2014-11-21 Alexander F. Zakharov , Victor N. Pervushin

The Dark Energy Survey : Detection of weak lensing magnification of supernovae and constraints on dark matter haloes

The residuals of the distance moduli of Type Ia supernovae (SN Ia) relative to a Hubble diagram fit contain information about the inhomogeneity of the universe, due to weak lensing magnification by foreground matter. By correlating the…

Cosmology and Nongalactic Astrophysics · Physics 2024-06-10 P. Shah , T. M. Davis , D. Bacon , J. Frieman , L. Galbany , R. Kessler , O. Lahav , J. Lee , C. Lidman , R. C. Nichol , M. Sako , D. Scolnic , M. Sullivan , M. Vincenzi , P. Wiseman , S. Allam , T. M. C. Abbott , M. Aguena , O. Alves , F. Andrade-Oliveira , J. Annis , K. Bechtol , E. Bertin , S. Bocquet , D. Brooks , D. Brout , A. Carnero Rosell , J. Carretero , F. J. Castander , L. N. da Costa , M. E. S. Pereira , H. T. Diehl , P. Doel , C. Doux , S. Everett , I. Ferrero , B. Flaugher , D. Friedel , M. Gatti , D. Gruen , R. A. Gruendl , G. Gutierrez , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. Huterer , D. J. James , K. Kuehn , S. Lee , J. L. Marshall , J. Mena-Fernández , R. Miquel , J. Myles , R. L. C. Ogando , A. Palmese , A. Pieres , A. Roodman , E. Sanchez , I. Sevilla-Noarbe , M. Smith , M. Soares-Santos , E. Suchyta , M. E. C. Swanson , G. Tarle , N. Weaverdyck

Constraining Temporal Oscillations of Cosmological Parameters Using Type Ia Supernovae

The existing set of type Ia supernovae (SNe Ia) is now sufficient to detect oscillatory deviations from the canonical $\Lambda$CDM cosmology. We determine that the Fourier spectrum of the Pantheon data set of spectroscopically well-observed…

Astrophysics of Galaxies · Physics 2019-04-22 Sasha R. Brownsberger , Christopher W. Stubbs , Daniel M. Scolnic

The Hubble Diagram of Type Ia Supernovae as a Function of Host Galaxy Morphology

(Abridged) We present new results on the Hubble diagram of distant type Ia supernovae (SNe Ia) segregated according to the type of host galaxy. This makes it possible to check earlier evidence for a cosmological constant by explicitly…

Astrophysics · Physics 2009-11-07 M. Sullivan , R. S. Ellis , G. Aldering , R. Amanullah , P. Astier , G. Blanc , M. S. Burns , A. Conley , S. E. Deustua , M. Doi , S. Fabbro , G. Folatelli , A. S. Fruchter , G. Garavini , R. Gibbons , G. Goldhaber , A. Goobar , D. E. Groom , D. Hardin , I. Hook , D. A. Howell , M. Irwin , A. G. Kim , R. A. Knop , C. Lidman , R. McMahon , J. Mendez , S. Nobili , P. E. Nugent , R. Pain , N. Panagia , C. R. Pennypacker , S. Perlmutter , R. Quimby , J. Raux , N. Regnault , P. Ruiz-Lapuente , B. Schaefer , K. Schahmaneche , A. L. Spadafora , N. A. Walton , L. Wang , W. M. Wood-Vasey , N. Yasuda

A problem with the analysis of type Ia supernovae

Type Ia supernovae have light curves that have widths and magnitudes that can be used for testing cosmologies and they provide one of the few direct measurements of time dilation. It is shown that the standard analysis that calibrates the…

Cosmology and Nongalactic Astrophysics · Physics 2018-01-25 David F. Crawford

On the progenitors of super-Chandrasekhar mass type Ia supernovae

Type Ia supernovae (SNe Ia) can be used as the standard candlelight to determine the cosmological distances because they are thought to have a uniform fuel amount. Recent observations of several overluminous SNe Ia suggest that the white…

High Energy Astrophysical Phenomena · Physics 2009-08-24 Wen-Cong Chen , Xiang-Dong Li

A Possible Distance Bias for Type Ia Supernovae with Different Ejecta Velocities

After correcting for their light-curve shape and color, Type Ia supernovae (SNe Ia) are precise cosmological distance indicators. However, there remains a non-zero intrinsic scatter in the differences between measured distance and that…

Astrophysics of Galaxies · Physics 2020-03-11 M. R. Siebert , R. J. Foley , D. O. Jones , K. W. Davis

The Dark Energy Survey: Cosmology Results With ~1500 New High-redshift Type Ia Supernovae Using The Full 5-year Dataset

We present cosmological constraints from the sample of Type Ia supernovae (SN Ia) discovered during the full five years of the Dark Energy Survey (DES) Supernova Program. In contrast to most previous cosmological samples, in which SN are…

Cosmology and Nongalactic Astrophysics · Physics 2025-07-22 DES Collaboration , T. M. C. Abbott , M. Acevedo , M. Aguena , A. Alarcon , S. Allam , O. Alves , A. Amon , F. Andrade-Oliveira , J. Annis , P. Armstrong , J. Asorey , S. Avila , D. Bacon , B. A. Bassett , K. Bechtol , P. H. Bernardinelli , G. M. Bernstein , E. Bertin , J. Blazek , S. Bocquet , D. Brooks , D. Brout , E. Buckley-Geer , D. L. Burke , H. Camacho , R. Camilleri , A. Campos , A. Carnero Rosell , D. Carollo , A. Carr , J. Carretero , F. J. Castander , R. Cawthon , C. Chang , R. Chen , A. Choi , C. Conselice , M. Costanzi , L. N. da Costa , M. Crocce , T. M. Davis , D. L. DePoy , S. Desai , H. T. Diehl , M. Dixon , S. Dodelson , P. Doel , C. Doux , A. Drlica-Wagner , J. Elvin-Poole , S. Everett , I. Ferrero , A. Ferté , B. Flaugher , R. J. Foley , P. Fosalba , D. Friedel , J. Frieman , C. Frohmaier , L. Galbany , J. García-Bellido , M. Gatti , E. Gaztanaga , G. Giannini , K. Glazebrook , O. Graur , D. Gruen , R. A. Gruendl , G. Gutierrez , W. G. Hartley , K. Herner , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. Huterer , B. Jain , D. J. James , N. Jeffrey , E. Kasai , L. Kelsey , S. Kent , R. Kessler , A. G. Kim , R. P. Kirshner , E. Kovacs , K. Kuehn , O. Lahav , J. Lee , S. Lee , G. F. Lewis , T. S. Li , C. Lidman , H. Lin , U. Malik , J. L. Marshall , P. Martini , J. Mena-Fernández , F. Menanteau , R. Miquel , J. J. Mohr , J. Mould , J. Muir , A. Möller , E. Neilsen , R. C. Nichol , P. Nugent , R. L. C. Ogando , A. Palmese , Y. -C. Pan , M. Paterno , W. J. Percival , M. E. S. Pereira , A. Pieres , A. A. Plazas Malagón , B. Popovic , A. Porredon , J. Prat , H. Qu , M. Raveri , M. Rodríguez-Monroy , A. K. Romer , A. Roodman , B. Rose , M. Sako , E. Sanchez , D. Sanchez Cid , M. Schubnell , D. Scolnic , I. Sevilla-Noarbe , P. Shah , J. Allyn. Smith , M. Smith , M. Soares-Santos , E. Suchyta , M. Sullivan , N. Suntzeff , M. E. C. Swanson , B. O. Sánchez , G. Tarle , G. Taylor , D. Thomas , C. To , M. Toy , M. A. Troxel , B. E. Tucker , D. L. Tucker , S. A. Uddin , M. Vincenzi , A. R. Walker , N. Weaverdyck , R. H. Wechsler , J. Weller , W. Wester , P. Wiseman , M. Yamamoto , F. Yuan , B. Zhang , Y. Zhang

The absolute infrared magnitudes of type Ia supernovae

The absolute luminosities and homogeneity of early-time infrared (IR) light curves of type Ia supernovae are examined. Eight supernovae are considered. These are selected to have accurately known epochs of maximum blue light as well as…

Astrophysics · Physics 2009-10-31 W. P. S. Meikle

Quantitative Classification of Type I Supernovae Using Spectroscopic Features at Maximum Brightness

We present a set of new quantitative classification criteria for major subclasses of Type I Supernovae (SNe). We analyze peak spectra of 146 SNe Ia from the Berkeley Supernova Ia Program (BSNIP), 12 SNe Ib, 19 SNe Ic (including 5 SNe Ic-BL)…

High Energy Astrophysical Phenomena · Physics 2017-07-11 Fengwu Sun , Avishay Gal-Yam

Implications For The Hubble Constant from the First Seven Supernovae at z >= 0.35

The Supernova Cosmology Project has discovered over twenty-eight supernovae (SNe) at 0.35 <z < 0.65 in an ongoing program that uses Type Ia SNe as high-redshift distance indicators. Here we present measurements of the ratio between the…

Astrophysics · Physics 2012-08-27 The Supernova Cosmology Project , : , A. G. Kim , S. Gabi , G. Goldhaber , D. E. Groom , I. M. Hook , M. Y. Kim , J. C. Lee , C. R. Pennypacker , S. Perlmutter , I. A. Small , A. Goobar , R. Pain , R. S. Ellis , R. G. McMahon , B. J. Boyle , P. S. Bunclark , D. Carter , M. J. Irwin , K. Glazebrook , H. J. M. Newberg , A. V. Filippenko , T. Matheson , M. Dopita , W. J. Couch

SALT2: using distant supernovae to improve the use of Type Ia supernovae as distance indicators

We present an empirical model of Type Ia supernovae spectro-photometric evolution with time. The model is built using a large data set including light-curves and spectra of both nearby and distant supernovae, the latter being observed by…

Astrophysics · Physics 2011-07-18 J. Guy , P. Astier , S. Baumont , D. Hardin , R. Pain , N. Regnault , S. Basa , R. G. Carlberg , A. Conley , S. Fabbro , D. Fouchez , I. M. Hook , D. A. Howell , K. Perrett , C. J. Pritchet , J. Rich , M. Sullivan , P. Antilogus , E. Aubourg , G. Bazin , J. Bronder , M. Filiol , N. Palanque-Delabrouille , P. Ripoche , V. Ruhlmann-Kleider

Cosmology with Photometric Surveys of Type Ia Supernovae

We discuss the extent to which photometric measurements alone can be used to identify Type Ia supernovae (SNIa) and to determine redshift and other parameters of interest for cosmological studies. We fit the light curve data of the type…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Yan Gong , Asantha Cooray , Xuelei Chen

The Pantheon+ Analysis: The Full Dataset and Light-Curve Release

Here we present 1701 light curves of 1550 spectroscopically confirmed Type Ia supernovae (SNe Ia) that will be used to infer cosmological parameters as part of the Pantheon+ SN analysis and the SH0ES (Supernovae and H0 for the Equation of…

Cosmology and Nongalactic Astrophysics · Physics 2022-10-26 Dan Scolnic , Dillon Brout , Anthony Carr , Adam G. Riess , Tamara M. Davis , Arianna Dwomoh , David O. Jones , Noor Ali , Pranav Charvu , Rebecca Chen , Erik R. Peterson , Brodie Popovic , Benjamin M. Rose , Charlotte Wood , Peter J. Brown , Ken Chambers , David A. Coulter , Kyle G. Dettman , Georgios Dimitriadis , Alexei V. Filippenko , Ryan J. Foley , Saurabh W. Jha , Charles D. Kilpatrick , Robert P. Kirshner , Yen-Chen Pan , Armin Rest , Cesar Rojas-Bravo , Matthew R. Siebert , Benjamin E. Stahl , WeiKang Zheng

Spectral properties of Type Ia supernovae up to z~0.3

Aims: Spectroscopic observations of Type Ia supernovae obtained at the New Technology Telescope (NTT) and the Nordic Optical Telescope (NOT), in conjunction with the SDSS-II Supernova Survey, are analysed. We use spectral indicators…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 J. Nordin , L. Ostman , A. Goobar , R. Amanullah , R. C. Nichol , M. Smith , J. Sollerman , B. A. Bassett , J. Frieman , P. M. Garnavich , G. Leloudas , M. Sako , D. P. Schneider

Multi-Color Light Curves of Type Ia Supernovae on the Color-Magnitude Diagram: a Novel Step Toward More Precise Distance and Extinction Estimates

We show empirically that fits to the color-magnitude relation of Type Ia supernovae after optical maximum can provide accurate relative extragalactic distances. We report the discovery of an empirical color relation for Type Ia light…

Astrophysics · Physics 2009-11-07 Lifan Wang , Gerson Goldhaber , Greg Aldering , Saul Perlmutter

Type Ia Supernova Spectral Line Ratios as Luminosity Indicators

Type Ia supernovae have played a crucial role in the discovery of the dark energy, via the measurement of their light curves and the determination of the peak brightness via fitting templates to the observed lightcurve shape. Two…

Astrophysics · Physics 2008-11-26 Sebastien Bongard , E. Baron , G. Smadja , David Branch , Peter H. Hauschildt

Supernovae as stellar objects

Type Ia supernovae (SN Ia) are generally believed to be the result of the thermonuclear disruption of Chandrasekhar-mass carbon-oxygen white dwarfs, mainly because such thermonuclear explosions can account for the right amount of nickel,…

Astrophysics · Physics 2016-08-30 W. Hillebrandt , M. Reinecke , J. C. Niemeyer

The High-Z Supernova Search: Measuring Cosmic Deceleration and Global Cur vature of the Universe Using Type Ia Supernovae

The High-Z Supernova Search is an international collaboration to discover and monitor type Ia supernovae (SN Ia) at $z > 0.2$ with the aim of measuring cosmic deceleration and global curvature. Our collaboration has pursued a basic…

Astrophysics · Physics 2009-10-30 Brian P. Schmidt , Nicholas B. Suntzeff , M. M. Phillips , Robert A. Schommer , Alejandro Clocchiatti , Robert P. Kirshner , Peter Garnavich , Peter Challis , B. Leibundgut , J. Spyromilio , Adam G. Riess , Alexei V. Filippenko , Mario Hamuy , R. Chris Smith , Craig Hogan , Christopher Stubbs , Alan Diercks , David Reiss , Ron Gilliland , John Tonry , Jose Maza , A. Dressler , J. Walsh , R. Ciardullo

Diversity of supernovae Ia determined using equivalent widths of Si II 4000

Spectroscopic and photometric properties of low and high-z supernovae Ia (SNe Ia) have been analyzed in order to achieve a better understanding of their diversity and to identify possible SN Ia sub-types. We use wavelet transformed spectra…

Astrophysics · Physics 2009-01-05 V. Arsenijevic , S. Fabbro , A. M. Mourao , A. J. Rica da Silva