Related papers: Fitting of supernovae without dark energy

Einstein-de Sitter model re-examined for the newly discovered SNe Ia

Consistency of Einstein-de Sitter model with the recently observed SNe Ia by the Hubble Space Telescope is examined. The model shows a reasonable fit to the observation, if one takes into account the extinction of SNe light by the…

Astrophysics · Physics 2009-12-30 R. G. Vishwakarma

Cosmological constraints from supernova data set with corrected redshift

Observations of distant type Ia supernovae (SNe Ia), used as standard candles, support the notion that the Cosmos is filled with a mysterious form of energy, the dark energy. The constraints on cosmological parameters derived from data of…

Cosmology and Nongalactic Astrophysics · Physics 2012-03-29 A. Feoli , L. Mancini , V. Rillo , M. Grasso

Restframe I-band Hubble diagram for type Ia supernovae up to redshift z ~0.5

We present a novel technique for fitting restframe I-band light curves on a data set of 42 Type Ia supernovae (SNe Ia). Using the result of the fit, we construct a Hubble diagram with 26 SNe from the subset at 0.01< z<0.1. Adding two SNe at…

Astrophysics · Physics 2012-08-27 The Supernova Cosmology Project , : , S. Nobili , R. Amanullah , G. Garavini , A. Goobar , C. Lidman , V. Stanishev , G. Aldering , P. Antilogus , P. Astier , M. S. Burns , A. Conley , S. E. Deustua , R. Ellis , S. Fabbro , V. Fadeyev , G. Folatelli , R. Gibbons , G. Goldhaber , D. E. Groom , I. Hook , D. A. Howell , A. G. Kim , R. A. Knop , P. E. Nugent , R. Pain , S. Perlmutter , R. Quimby , J. Raux , N. Regnault , P. Ruiz-Lapuente , G. Sainton , K. Schahmaneche , E. Smith , A. L. Spadafora , R. C. Thomas , L. Wang

Evidence from Type Ia Supernovae for an Accelerating Universe and Dark Energy

I review the use of Type Ia supernovae (SNe Ia) for cosmological distance determinations. Low-redshift SNe Ia (z <~ 0.1) demonstrate that the Hubble expansion is linear, that H_0 = 65 +/- 2 (statistical) km/s/Mpc, and that the properties of…

Astrophysics · Physics 2007-05-23 Alexei V. Filippenko

Consequences on some dark energy-candidates from the type Ia supernova SN 1997ff

We examine the status of various dark energy-models in light of the recently observed SN 1997ff at z \approx 1.7. The modified data still fit a pure cosmological constant \Lambda or a quintessence with an equation of state similar to that…

Astrophysics · Physics 2009-11-07 R. G. Vishwakarma

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

Constraints on dark energy with the LOSS SN Ia sample

We present a cosmological analysis of the Lick Observatory Supernova Search (LOSS) Type Ia supernova (SN Ia) photometry sample introduced by Ganeshalingam et al. (2010). These SNe provide an effective anchor point to estimate cosmological…

Cosmology and Nongalactic Astrophysics · Physics 2013-07-04 Mohan Ganeshalingam , Weidong Li , Alexei V. Filippenko

The Hubble Space Telescope Cluster Supernova Survey: V. Improving the Dark Energy Constraints Above z>1 and Building an Early-Type-Hosted Supernova Sample

We present ACS, NICMOS, and Keck AO-assisted photometry of 20 Type Ia supernovae SNe Ia from the HST Cluster Supernova Survey. The SNe Ia were discovered over the redshift interval 0.623 < z < 1.415. Fourteen of these SNe Ia pass our strict…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-21 N. Suzuki , D. Rubin , C. Lidman , G. Aldering , R. Amanullah , K. Barbary , L. F. Barrientos , J. Botyanszki , M. Brodwin , N. Connolly , K. S. Dawson , A. Dey , M. Doi , M. Donahue , S. Deustua , P. Eisenhardt , E. Ellingson , L. Faccioli , V. Fadeyev , H. K. Fakhouri , A. S. Fruchter , D. G. Gilbank , M. D. Gladders , G. Goldhaber , A. H. Gonzalez , A. Goobar , A. Gude , T. Hattori , H. Hoekstra , E. Hsiao , X. Huang , Y. Ihara , M. J. Jee , D. Johnston , N. Kashikawa , B. Koester , K. Konishi , M. Kowalski , E. V. Linder , L. Lubin , J. Melbourne , J. Meyers , T. Morokuma , F. Munshi , C. Mullis , T. Oda , N. Panagia , S. Perlmutter , M. Postman , T. Pritchard , J. Rhodes , P. Ripoche , P. Rosati , D. J. Schlegel , A. Spadafora , S. A. Stanford , V. Stanishev , D. Stern , M. Strovink , N. Takanashi , K. Tokita , M. Wagner , L. Wang , N. Yasuda , H. K. C. Yee

Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution

We have discovered 16 Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to provide the first conclusive evidence for cosmic deceleration that preceded the current epoch of cosmic acceleration. These…

Astrophysics · Physics 2008-11-26 Adam G. Riess , Louis-Gregory Strolger , John Tonry , Stefano Casertano , Henry C. Ferguson , Bahram Mobasher , Peter Challis , Alexei V. Filippenko , Saurabh Jha , Weidong Li , Ryan Chornock , Robert P. Kirshner , Bruno Leibundgut , Mark Dickinson , Mario Livio , Mauro Giavalisco , Charles C. Steidel , Narciso Benitez , Zlatan Tsvetanov

The first Hubble diagram and cosmological constraints using superluminous supernova

We present the first Hubble diagram of superluminous supernovae (SLSNe) out to a redshift of two, together with constraints on the matter density, $\Omega_{\rm M}$, and the dark energy equation-of-state parameter, $w(\equiv p/\rho)$. We…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-12 C. Inserra , M. Sullivan , C. R. Angus , E. Macaulay , R. C. Nichol , M. Smith , C. Frohmaier , C. P. Gutiérrez , M. Vicenzi , A. Möller , D. Brout , P. J. Brown , T. M. Davis , C. B. D'Andrea , L. Galbany , R. Kessler , A. G. Kim , Y. -C. Pan , M. Pursiainen , D. Scolnic , B. P. Thomas , P. Wiseman , T. M. C. Abbott , J. Annis , S. Avila , E. Bertin , D. Brooks , D. L. Burke , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , R. Cawthon , S. Desai , H. T. Diehl , T. F. Eifler , D. A. Finley , B. Flaugher , P. Fosalba , J. Frieman , J. Garcia-Bellido , E. Gaztanaga , D. W. Gerdes , T. Giannantonio , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , D. L. Hollowood , K. Honscheid , D. J. James , E. Krause , K. Kuehn , N. Kuropatkin , T. S. Li , C. Lidman , M. Lima , M. A. G. Maia , J. L. Marshall , P. Martini , F. Menanteau , R. Miquel , A. A. Plazas Malagón , A. K. Romer , A. Roodman , M. Sako , E. Sanchez , V. Scarpine , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , M. Soares-Santos , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , D. L. Tucker , V. Vikram , A. R. Walker , Y. Zhang , J. Asorey , J. Calcino , D. Carollo , K. Glazebrook , S. R. Hinton , J. K. Hoormann , G. F. Lewis , R. Sharp , E. Swann , B. E. Tucker

Is the evidence for dark energy secure?

Several kinds of astronomical observations, interpreted in the framework of the standard Friedmann-Robertson-Walker cosmology, have indicated that our universe is dominated by a Cosmological Constant. The dimming of distant Type Ia…

Astrophysics · Physics 2014-11-18 Subir Sarkar

Non-Gaussian Likelihoods for Type Ia Supernovae Cosmology: Implications for Dark Energy and $H_0$

The latest improvements in the scale and calibration of Type Ia supernovae catalogues allow us to constrain the specific nature and evolution of dark energy through its effect on the expansion history of the universe. We present the results…

Cosmology and Nongalactic Astrophysics · Physics 2023-12-05 Toby Lovick , Suhail Dhawan , Will Handley

The Dark Energy Survey Supernova Program: Cosmological Analysis and Systematic Uncertainties

We present the full Hubble diagram of photometrically-classified Type Ia supernovae (SNe Ia) from the Dark Energy Survey supernova program (DES-SN). DES-SN discovered more than 20,000 SN candidates and obtained spectroscopic redshifts of…

Cosmology and Nongalactic Astrophysics · Physics 2024-01-24 M. Vincenzi , D. Brout , P. Armstrong , B. Popovic , G. Taylor , M. Acevedo , R. Camilleri , R. Chen , T. M. Davis , S. R. Hinton , L. Kelsey , R. Kessler , J. Lee , C. Lidman , A. Möller , H. Qu , M. Sako , B. Sanchez , D. Scolnic , M. Smith , M. Sullivan , P. Wiseman , J. Asorey , B. A. Bassett , D. Carollo , A. Carr , R. J. Foley , C. Frohmaier , L. Galbany , K. Glazebrook , O. Graur , E. Kovacs , K. Kuehn , U. Malik , R. C. Nichol , B. Rose , B. E. Tucker , M. Toy , D. L. Tucker , F. Yuan , T. M. C. Abbott , M. Aguena , O. Alves , F. Andrade-Oliveira , J. Annis , D. Bacon , K. Bechtol , G. M. Bernstein , D. Brooks , D. L. Burke , A. Carnero Rosell , J. Carretero , F. J. Castander , C. Conselice , L. N. da Costa , M. E. S. Pereira , S. Desai , H. T. Diehl , P. Doel , I. Ferrero , B. Flaugher , D. Friedel , J. Frieman , J. García-Bellido , M. Gatti , G. Giannini , D. Gruen , R. A. Gruendl , D. L. Hollowood , K. Honscheid , D. Huterer , D. J. James , N. Kuropatkin , O. Lahav , S. Lee , H. Lin , J. L. Marshall , J. Mena-Fernández , F. Menanteau , R. Miquel , A. Palmese , A. Pieres , A. A. Plazas Malagón , A. Porredon , A. K. Romer , A. Roodman , E. Sanchez , D. Sanchez Cid , M. Schubnell , I. Sevilla-Noarbe , E. Suchyta , M. E. C. Swanson , G. Tarle , C. To , A. R. Walker , N. Weaverdyck

New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy

We have discovered 21 new Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to trace the history of cosmic expansion over the last 10 billion years. These objects, which include 13 spectroscopically…

Astrophysics · Physics 2008-11-26 Adam G. Riess , Louis-Gregory Strolger , Stefano Casertano , Henry C. Ferguson , Bahram Mobasher , Ben Gold , Peter J. Challis , Alexei V. Filippenko , Saurabh Jha , Weidong Li , John Tonry , Ryan Foley , Robert P. Kirshner , Mark Dickinson , Emily MacDonald , Daniel Eisenstein , Mario Livio , Josh Younger , Chun Xu , Tomas Dahlen , Daniel Stern

Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant

We present observations of 10 type Ia supernovae (SNe Ia) between 0.16 < z < 0.62. With previous data from our High-Z Supernova Search Team, this expanded set of 16 high-redshift supernovae and 34 nearby supernovae are used to place…

Astrophysics · Physics 2008-11-26 Adam G. Riess , Alexei V. Filippenko , Peter Challis , Alejandro Clocchiattia , Alan Diercks , Peter M. Garnavich , Ron L. Gilliland , Craig J. Hogan , Saurabh Jha , Robert P. Kirshner , B. Leibundgut , M. M. Phillips , David Reiss , Brian P. Schmidt , Robert A. Schommer , R. Chris Smith , J. Spyromilio , Christopher Stubbs , Nicholas B. Suntzeff , John Tonry

Type Ia Supernovae and Cosmology

I discuss the use of Type Ia supernovae (SNe Ia) for cosmological distance determinations. Low-redshift SNe Ia (z < 0.1) demonstrate that the Hubble expansion is linear with H_0 = 72 +/- 8 km/s/Mpc, and that the properties of dust in other…

Astrophysics · Physics 2015-11-11 Alexei V. Filippenko

Evaluating a Sigmoid Dark Energy Model to Explain the Hubble Tension

In this study we analyze Type Ia supernovae (SNe Ia) data sourced from the Pantheon+ compilation to investigate late-time physics effects influencing the expansion history, $H(z)$, at redshifts $(z < 2)$. Our focus centers on a time-varying…

Cosmology and Nongalactic Astrophysics · Physics 2024-07-17 Sergio Torres-Arzayus , Camilo Delgado-Correal , Mario-A. Higuera-G. , Sebastian Rueda-Blanco

Pantheon update on a model-independent analysis of cosmological supernova data

We present an update of our previous work, necessitated by availability of a significantly improved dataset. The work is a model-independent analysis of the cosmological supernova (Type Ia) data, where function families are fit to the data…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-08 A. K. Çamlıbel , İ. Semiz , M. A. Feyizoğlu

Utilizing Type Ia Supernovae in a Large, Fast, Imaging Survey to Constrain Dark Energy

We study the utility of a large sample of type Ia supernovae that might be observed in an imaging survey that rapidly scans a large fraction of the sky for constraining dark energy. We consider information from the traditional luminosity…

Astrophysics · Physics 2011-02-11 Andrew R. Zentner , Suman Bhattacharya

First Cosmology Results Using Type Ia Supernovae From the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation

We present the analysis underpinning the measurement of cosmological parameters from 207 spectroscopically classified type Ia supernovae (SNe Ia) from the first three years of the Dark Energy Survey Supernova Program (DES-SN), spanning a…

Cosmology and Nongalactic Astrophysics · Physics 2019-06-04 D. Brout , D. Scolnic , R. Kessler , C. B. D'Andrea , T. M. Davis , R. R. Gupta , S. R. Hinton , A. G. Kim , J. Lasker , C. Lidman , E. Macaulay , A. Möller , R. C. Nichol , M. Sako , M. Smith , M. Sullivan , B. Zhang , P. Andersen , J. Asorey , A. Avelino , B. A. Bassett , P. Brown , J. Calcino , D. Carollo , P. Challis , M. Childress , A. Clocchiatti , A. V. Filippenko , R. J. Foley , L. Galbany , K. Glazebrook , J. K. Hoormann , E. Kasai , R. P. Kirshner , K. Kuehn , S. Kuhlmann , G. F. Lewis , K. S. Mandel , M. March , V. Miranda , E. Morganson , D. Muthukrishna , P. Nugent , A. Palmese , Y. -C. Pan , R. Sharp , N. E. Sommer , E. Swann , R. C. Thomas , B. E. Tucker , S. A. Uddin , W. Wester , T. M. C. Abbott , S. Allam , J. Annis , S. Avila , K. Bechtol , G. M. Bernstein , E. Bertin , D. Brooks , D. L. Burke , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , C. E. Cunha , L. N. da Costa , C. Davis , J. De Vicente , D. L. DePoy , S. Desai , H. T. Diehl , P. Doel , A. Drlica-Wagner , T. F. Eifler , J. Estrada , E. Fernandez , B. Flaugher , P. Fosalba , J. Frieman , J. García-Bellido , D. Gruen , R. A. Gruendl , G. Gutierrez , W. G. Hartley , D. L. Hollowood , K. Honscheid , B. Hoyle , D. J. James , M. Jarvis , T. Jeltema , E. Krause , O. Lahav , T. S. Li , M. Lima , M. A. G. Maia , J. Marriner , J. L. Marshall , P. Martini , F. Menanteau , C. J. Miller , R. Miquel , R. L. C. Ogando , A. A. Plazas , A. K. Romer , A. Roodman , E. S. Rykoff , E. Sanchez , B. Santiago , V. Scarpine , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , R. C. Smith , M. Soares-Santos , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , M. A. Troxel , D. L. Tucker , V. Vikram , A. R. Walker , Y. Zhang