Detection of gamma-ray burst Amati relation based on Hubble data set and Pantheon+ samples
Abstract Using gamma-ray bursts as standard candles for cosmological parameter constraints rely on their empirical luminosity relations and low-redshift calibration. In this paper, we examine the Amati relation and its potential corrections based on the A118 sample of higher-quality gamma-ray bursts...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-09-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-13304-5 |
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| author | Yufen Han Jiaze Gao Gang Liu Lixin Xu |
| author_facet | Yufen Han Jiaze Gao Gang Liu Lixin Xu |
| author_sort | Yufen Han |
| collection | DOAJ |
| description | Abstract Using gamma-ray bursts as standard candles for cosmological parameter constraints rely on their empirical luminosity relations and low-redshift calibration. In this paper, we examine the Amati relation and its potential corrections based on the A118 sample of higher-quality gamma-ray bursts, using both Hubble data set and Pantheon+ samples as calibration samples in the redshift range of $$z<1.965$$ z < 1.965 . In calibrating gamma-ray bursts using these two datasets, we employ Gaussian processes to obtain corresponding Hubble diagrams to avoid the dependence on cosmological models in the calibration process. We first divided the low-redshift sample of GRBs into two bins and examined the Amati relation and its potential modifications. We found that under both calibrations, the Amati relation did not show evidence of redshift evolution (68 $$\%$$ % confidence level). For the other two Amati relations that include redshift evolution terms, the central values of the redshift evolution coefficients deviated from 0, but due to the limitations of the sample size and the increase in the number of parameters, most of the redshift evolution coefficients were not able to be excluded from 0 at the 1 $$\sigma $$ σ level. Therefore, to assess their situation across the entire redshift range, we employed MCMC to globally fit three types of Amati relations. By computing AIC and BIC, we found that for the GRB A118 sample, the standard Amati relation remains the most fitting empirical luminosity formula, and no potential redshift evolution trend was observed for two different low-redshift calibrating sources. |
| format | Article |
| id | doaj-art-b2af7ccd57b545dda9f93e37e6be39c6 |
| institution | Kabale University |
| issn | 1434-6052 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-b2af7ccd57b545dda9f93e37e6be39c62024-11-17T12:44:08ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-09-0184911210.1140/epjc/s10052-024-13304-5Detection of gamma-ray burst Amati relation based on Hubble data set and Pantheon+ samplesYufen Han0Jiaze Gao1Gang Liu2Lixin Xu3Institute of Theoretical Physics, School of Physics, Dalian University of TechnologyInstitute of Theoretical Physics, School of Physics, Dalian University of TechnologyInstitute of Theoretical Physics, School of Physics, Dalian University of TechnologyInstitute of Theoretical Physics, School of Physics, Dalian University of TechnologyAbstract Using gamma-ray bursts as standard candles for cosmological parameter constraints rely on their empirical luminosity relations and low-redshift calibration. In this paper, we examine the Amati relation and its potential corrections based on the A118 sample of higher-quality gamma-ray bursts, using both Hubble data set and Pantheon+ samples as calibration samples in the redshift range of $$z<1.965$$ z < 1.965 . In calibrating gamma-ray bursts using these two datasets, we employ Gaussian processes to obtain corresponding Hubble diagrams to avoid the dependence on cosmological models in the calibration process. We first divided the low-redshift sample of GRBs into two bins and examined the Amati relation and its potential modifications. We found that under both calibrations, the Amati relation did not show evidence of redshift evolution (68 $$\%$$ % confidence level). For the other two Amati relations that include redshift evolution terms, the central values of the redshift evolution coefficients deviated from 0, but due to the limitations of the sample size and the increase in the number of parameters, most of the redshift evolution coefficients were not able to be excluded from 0 at the 1 $$\sigma $$ σ level. Therefore, to assess their situation across the entire redshift range, we employed MCMC to globally fit three types of Amati relations. By computing AIC and BIC, we found that for the GRB A118 sample, the standard Amati relation remains the most fitting empirical luminosity formula, and no potential redshift evolution trend was observed for two different low-redshift calibrating sources.https://doi.org/10.1140/epjc/s10052-024-13304-5 |
| spellingShingle | Yufen Han Jiaze Gao Gang Liu Lixin Xu Detection of gamma-ray burst Amati relation based on Hubble data set and Pantheon+ samples European Physical Journal C: Particles and Fields |
| title | Detection of gamma-ray burst Amati relation based on Hubble data set and Pantheon+ samples |
| title_full | Detection of gamma-ray burst Amati relation based on Hubble data set and Pantheon+ samples |
| title_fullStr | Detection of gamma-ray burst Amati relation based on Hubble data set and Pantheon+ samples |
| title_full_unstemmed | Detection of gamma-ray burst Amati relation based on Hubble data set and Pantheon+ samples |
| title_short | Detection of gamma-ray burst Amati relation based on Hubble data set and Pantheon+ samples |
| title_sort | detection of gamma ray burst amati relation based on hubble data set and pantheon samples |
| url | https://doi.org/10.1140/epjc/s10052-024-13304-5 |
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