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A test of cosmic distance duality relation using SPT-SZ galaxy clusters, Type Ia supernovae, and cosmic chronometers

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arxiv 2104.00974 v2 pith:7MUXV2Y7 submitted 2021-04-02 astro-ph.CO gr-qc

Kamal Bora , Shantanu Desai This is my paper
classification astro-ph.COgr-qc
keywords cosmicdistancesampletestcarrycddrchronometersclusters
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We carry out a test of the cosmic distance duality relation using a sample of 52 SPT-SZ clusters, along with X-ray measurements from XMM-Newton. To carry out this test, we need an estimate of the luminosity distance ($D_L$) at the redshift of the cluster. For this purpose, we use three independent methods: directly using $D_L$ from the closest Type Ia Supernovae from the Union 2.1 sample, non-parametric reconstruction of $D_L$ using the same Union 2.1 sample, and finally using $H(z)$ measurements from cosmic chronometers and reconstructing $D_L$ using Gaussian Process regression. We use four different functions to characterize the deviations from CDDR. All our results for these ($4 \times 3$) analyses are consistent with CDDR to within 1$\sigma$.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Hubble tension: the shape wall

    astro-ph.CO 2026-07 accept novelty 6.0 of 10

    Late-time modifications to the expansion history can raise H0 by at most about 2% (conservative) to 3.7% (permissive) if the CMB acoustic scale is fixed.

  2. A Search for Hard X-ray/Soft $\gamma$-ray Emission from SPT-CL J2012-5649 (Abell 3667) Using INTEGRAL/ISGRI

    astro-ph.HE 2025-12 conditional novelty 5.0 of 10

    INTEGRAL/ISGRI finds no 30–300 keV emission from the merging galaxy cluster Abell 3667, yielding a 3σ upper limit of 4.4×10^-10 erg cm^-2 s^-1 in the 30–100 keV band.

  3. A MINOT-based Study of Gamma-ray emission from SPT-CL J2012-5649/Abell 3667

    astro-ph.HE 2026-05 conditional novelty 4.0 of 10

    MINOT modeling of Abell 3667 predicts a hadronic 1–300 GeV flux of ~1.15e-10 cm^-2 s^-1 at 3.7 R500, matching Fermi-LAT, with ~76% of flux outside R500 and IC subdominant by ~20.

  4. A MINOT-based Study of Gamma-ray emission from SPT-CL J2012-5649/Abell 3667

    astro-ph.HE 2026-05 unverdicted novelty 3.0 of 10

    MINOT modeling of Abell 3667 predicts hadronic gamma-ray flux roughly matching Fermi-LAT observations in the 1-300 GeV band but with a spectral index in tension with the data.

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