Cosmic infrared background excess from axionlike particles and implications for multimessenger observations of blazars

Kalashev, O.; Kusenko, Alexander; Vitagliano, Edoardo

doi:10.1103/physrevd.99.023002

Cited by 43 publications

(52 citation statements)

References 86 publications

(118 reference statements)

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“…Therefore, we accept the null hypothesis H 0 for any values in the region (m a , g 12 ) ∈ [0.1 neV, 2.5 neV ] × [2. 9,40]. This result demonstrates that the gamma-ray observations of distant blazars prefer the null hypothesis H 0 , i.e., the Gilmore EBL model.…”

Section: B the Best Modelmentioning

confidence: 55%

“…In this process, the ALP parameters for every spectrum-fitting are in common and in the parameter region (m a , g 12 ) ∈ [0.1 neV, 2.5 neV ] × [2. 9,40]. It can be probed by the planed IAXO experiment and the part of g 12 < 5 is outside the excluded region constrained by gamma-ray observations (SN1987A and Fermi/LAT NGC1275).…”

Section: B Intrinsic Spectra and Methodsmentioning

confidence: 98%

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Testing the CIBER cosmic infrared background measurements and axionlike particles with observations of TeV blazars

et al. 2020

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The first measurements from the CIBER experiment of extragalactic background light (EBL) in near-infrared (NIR) band exhibit a higher intensity than those inferred through γ-ray observations. Recent theoretical-EBL intensities are typically consistent with the very high energy (VHE) γ-ray observations. Yet, it is possible that the excess NIR radiation is a new component of EBL and not in tension with the TeV spectra of distant blazars, since the hypothetical axion-like particle (ALP) may lead to a reduced opacity of the Universe for VHE γ-rays. In order to probe whether the excess component arises mainly from EBL, thirteen observed spectra in high energy and VHE ranges from ten distant TeV BL Lac objects are fitted by four theoretical spectra which involve theoretical EBL (Gilmore ), Gilmore's EBL model including photon/ALP coupling, Gilmore's EBL with CIBER excess and the latter including photon/ALP coupling respectively. We find the goodness of fit for the model with CIBER excess can be improved with a significance of 7.6 σ after including the photon/ALP coupling; Thus, the ALP/photon mixing mechanism can effectively alleviate the tension; However, the Gilmore EBL model, on the whole, is more compatible with the observed spectra compared to those with ALP, although individual blazars such as PKS 1424+240 and 1ES 1101-232 prefer the ALP-model. Our results suggest that the recent EBL models can solely explain the VHE γ-ray observations, and assuming the existence of the ALP to alleviate the tension is not required in a statistical sense, thus the excess over the EBL models is less likely to be a new EBL component. * EBL intensities (for reviews see e.g. Refs. [1,16,17]) and test the empirical EBL models, e.g. Refs. [8][9][10][11][12][13], by comparing the difference between the assumed-intrinsic spectra and the observed one. Thanks to the discovery of more and more distant Tev blazars, several groups have detected this imprint, e.g. Refs. [15,18,19], and found the intensities were near the galaxy-count lower limits.The spectra of a few individual blazars such as PKS1424+240 appear to be unexpectedly hard [34]. Furthermore, hints for a reduced gamma-ray opacity in the form of a pair-production anomaly [20] (i.e., VHE γ-ray observations require an EBL level below the lower limits from galaxy counts), or unusual redshift-dependent intrinsic (after correction for EBL absorption) spectral hardening found in large samples, have been claimed by several authors [21][22][23][24]. However, no significant and systematic anomalies on the entire sample were revealed by recent systematic studies of spectra fitted with recent theoretical EBL absorption on large samples of VHE blazars, see e.g., 33,34]. The intensities of these recent EBL models (e.g. Franceschini 2008 [8], Dominguez 2011 [9], Kneiske 2010 [10], Finke 2010 [11], Gilmore 2012 [12], Stecker 2016 [13]) are close to that from the galaxy counts. At present, many EBL measurements inferred by γ-ray observations reveal that its intensities are generally consistent with ...

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Section: B the Best Modelmentioning

confidence: 55%

Section: B Intrinsic Spectra and Methodsmentioning

confidence: 98%

Testing the CIBER cosmic infrared background measurements and axionlike particles with observations of TeV blazars

et al. 2020

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“…refs. [36][37][38][39][40][41][42][43][44][45]. Additional motivation for studying this coupling comes from dark photon dark matter.…”

Section: Jhep06(2021)167mentioning

confidence: 99%

“…Similar collider constraints exist for the opposite limit but have not yet been computed. Also note that slightly stronger bounds than the white dwarf cooling bounds can be obtained by using the recent analysis of the tip of the red giant branch[40,60].…”

mentioning

confidence: 95%

Supernova constraints on an axion-photon-dark photon interaction

Hook

Marques-Tavares

Ristow

2021

J. High Energ. Phys.

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We present the supernova constraints on an axion-photon-dark photon coupling, which can be the leading coupling to dark sector models and can also lead to dramatic changes to axion cosmology. We show that the supernova bound on this coupling has two unusual features. One occurs because the scattering that leads to the trapping regime converts axions and dark photons into each other. Thus, if one of the two new particles is sufficiently massive, both production and scattering become suppressed and the bounds from bulk emission and trapped (area) emission both weaken exponentially and do not intersection The other unusual feature occurs because for light dark photons, longitudinal modes couple more weakly than transverse modes do. Since the longitudinal mode is more weakly coupled, it can still cause excessive cooling even if the transverse mode is trapped. Thus, the supernova constraints for massive dark photons look like two independent supernova bounds super-imposed on top of each other.

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“…ticles (Kohri et al 2017) and axion-like particles (Kalashev et al 2019) which are expected to produce a feature at the energy close to the particle rest energy.…”

Section: Introductionmentioning

confidence: 99%

Search for spectral features in extragalactic background light with gamma-ray telescopes

Korochkin

Neronov

Semikoz

2020

A&A

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Context. Cumulative optical / infrared emission from galaxies accumulated over cosmological time scales, the Extragalactic Background Light (EBL), could be probed by complementary techniques of direct observations and source counting in the visible / infrared and via its imprint on the signal of distant active galactic nuclei in gamma-rays. Aims. We compare the visible / infrared measurements with the gamma-ray constraints and study if the discrepancies of the measurements with different methods could be due to the presence of features in the EBL spectrum localised in the micron wavelength range.Methods. We combine data on time-averaged spectra of selected blazars obtained by Fermi and ground-based γ-ray telescopes and model the effect of absorption on EBL while allowing for existence of a previously unaccounted spectral feature. Results. We show that previously reported "excess" EBL flux in ∼ 1 micron wavelength range is consistent with gamma-ray measurements, if the excess has the form of a narrow feature of the width δλ < λ and overall flux of up to 15 nW/(cm 2 sr) above the "minimal" EBL estimated from the visible / infrared source counts. Such "bump-like" spectral feature could originate e.g. from decaying dark matter particles, or axions or peculiar astrophysical processes in the course of star formation history. We discuss possibilities for the search of spectral features in the EBL with Cherenkov Telescope Array.

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Cosmic infrared background excess from axionlike particles and implications for multimessenger observations of blazars

Cited by 43 publications

References 86 publications

Testing the CIBER cosmic infrared background measurements and axionlike particles with observations of TeV blazars

Testing the CIBER cosmic infrared background measurements and axionlike particles with observations of TeV blazars

Supernova constraints on an axion-photon-dark photon interaction

Search for spectral features in extragalactic background light with gamma-ray telescopes

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