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Search for Lorentz Invariance Violation with spectral lags of GRB 190114C using profile likelihood.

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Title: Search for Lorentz Invariance Violation with spectral lags of GRB 190114C using profile likelihood.
Authors: Ramakrishnan, Vyaas1 (AUTHOR) vyaas3305@gmail.com, Desai, Shantanu1 (AUTHOR) shntn05@gmail.com
Source: International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology. Feb2026, Vol. 35 Issue 3, p1-9. 9p.
Subjects: Lorentz invariance, Frequentist statistics, Physical constants, Bayesian analysis, Planck scale, Gamma ray bursts, Maximum likelihood statistics
Abstract: We search for Lorentz Invariance Volation (LIV) by re-analyzing the spectral lag data for GRB 190114C from Fermi-GBM using frequentist analysis, where we deal with the astrophysical nuisance parameters using profile likelihood. For this use case, we find a global minima for the χ 2 as a function of energy scale of LIV ( E Q G ), well below the Planck scale. The best-fit 1 σ central intervals for E QG are given by 2. 8 1 − 0. 3 7 + 0. 5 0 × 1 0 1 4 GeV and 9. 8 5 − 0. 6 0 + 0. 8 4 × 1 0 5 GeV for linear and quadratic LIV, respectively, and agree with the Bayesian estimates obtained so far in a previous work. Therefore, the results from frequentist analysis GRB 190114C agree with Bayesian analysis. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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An: 191501829
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  Data: Search for Lorentz Invariance Violation with spectral lags of GRB 190114C using profile likelihood.
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  Data: <searchLink fieldCode="AR" term="%22Ramakrishnan%2C+Vyaas%22">Ramakrishnan, Vyaas</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> vyaas3305@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Desai%2C+Shantanu%22">Desai, Shantanu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> shntn05@gmail.com</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Modern+Physics+D%3A+Gravitation%2C+Astrophysics+%26+Cosmology%22">International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology</searchLink>. Feb2026, Vol. 35 Issue 3, p1-9. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Lorentz+invariance%22">Lorentz invariance</searchLink><br /><searchLink fieldCode="DE" term="%22Frequentist+statistics%22">Frequentist statistics</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+constants%22">Physical constants</searchLink><br /><searchLink fieldCode="DE" term="%22Bayesian+analysis%22">Bayesian analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Planck+scale%22">Planck scale</searchLink><br /><searchLink fieldCode="DE" term="%22Gamma+ray+bursts%22">Gamma ray bursts</searchLink><br /><searchLink fieldCode="DE" term="%22Maximum+likelihood+statistics%22">Maximum likelihood statistics</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: We search for Lorentz Invariance Volation (LIV) by re-analyzing the spectral lag data for GRB 190114C from Fermi-GBM using frequentist analysis, where we deal with the astrophysical nuisance parameters using profile likelihood. For this use case, we find a global minima for the χ 2 as a function of energy scale of LIV ( E Q G ), well below the Planck scale. The best-fit 1 σ central intervals for E QG are given by 2. 8 1 − 0. 3 7 + 0. 5 0 × 1 0 1 4 GeV and 9. 8 5 − 0. 6 0 + 0. 8 4 × 1 0 5 GeV for linear and quadratic LIV, respectively, and agree with the Bayesian estimates obtained so far in a previous work. Therefore, the results from frequentist analysis GRB 190114C agree with Bayesian analysis. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1142/S0218271825501019
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 9
        StartPage: 1
    Subjects:
      – SubjectFull: Lorentz invariance
        Type: general
      – SubjectFull: Frequentist statistics
        Type: general
      – SubjectFull: Physical constants
        Type: general
      – SubjectFull: Bayesian analysis
        Type: general
      – SubjectFull: Planck scale
        Type: general
      – SubjectFull: Gamma ray bursts
        Type: general
      – SubjectFull: Maximum likelihood statistics
        Type: general
    Titles:
      – TitleFull: Search for Lorentz Invariance Violation with spectral lags of GRB 190114C using profile likelihood.
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            NameFull: Ramakrishnan, Vyaas
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            NameFull: Desai, Shantanu
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              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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              Value: 35
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            – TitleFull: International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology
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