Bounds on abundance of primordial black hole and dark matter from EDGES 21-cm signal

Halder, Ashadul; Banerjee, Shibaji

doi:10.1103/physrevd.103.063044

Cited by 27 publications

(30 citation statements)

References 57 publications

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“…[5,6]). On the other hand, the abnormal signal has been used to investigate the properties of dark matter (DM) [6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Constraints on primordial black holes and curvature perturbations from the global 21-cm signal

Yang

2020

Phys. Rev. D

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We investigate the effect of accreting primordial black holes (PBHs) on the thermal history of the intergalactic medium (IGM), including the accretion of baryonic matter and dark matter particle. The variations of the thermal history of the IGM caused by accreting PBHs will result in the changes of the global 21-cm signal in the cosmic dawn. Based on the detection of the global 21-cm signal by EDGES, by requiring the differential brightness temperature, e.g., δT21 < ∼ −100 (−50) mK, we obtain the upper limits on the abundance of PBHs for the mass range 10 < ∼ MPBH < ∼ 10 4 M . Compared with previous works, the limits are stronger for the mass range 10 < ∼ MPBH < ∼ 50 M .

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“…[5,6]). On the other hand, the abnormal signal has been used to investigate the properties of dark matter (DM) [6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Constraints on primordial black holes and curvature perturbations from the global 21-cm signal

Yang

2020

Phys. Rev. D

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“…The 21 cm line signal from the hyperfine structure of the hydrogen is highly sensitive to the thermal state of the IGM, and thus, energy injection from PBH accretion or evaporation may leave strong observable signatures. The first claimed measurement of a global absorption dip by the EDGES collaboration (Bowman et al, 2018) may lead to competitive bounds on the PBH abundance, either from accretion processes (Hektor et al, 2018) or from energy injection by evaporation (Clark et al, 2018;Halder and Banerjee, 2021;Halder and Pandey, 2021). It must be noted, however, that the EDGES signal has not been confirmed yet by other experiments, and it has been argued that it could be explained by alternative mechanisms (Hills et al, 2018;Bradley et al, 2019;Sims and Pober, 2020).…”

Section: Cosmologymentioning

confidence: 99%

A Brief Review on Primordial Black Holes as Dark Matter

Villanueva-Domingo

Mena

Palomares‐Ruiz

2021

Front. Astron. Space Sci.

145

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Primordial black holes (PBHs) represent a natural candidate for one of the components of the dark matter (DM) in the Universe. In this review, we shall discuss the basics of their formation, abundance and signatures. Some of their characteristic signals are examined, such as the emission of particles due to Hawking evaporation and the accretion of the surrounding matter, effects which could leave an impact in the evolution of the Universe and the formation of structures. The most relevant probes capable of constraining their masses and population are discussed.

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“…The evaporation of PBHs during the epoch of star formation and reionization could leave imprints in the highredshift 21cm signal by heating and ionizing intergalactic gas. Several studies have presented current or future limits, considering the evaporation of 4-dimensional PBHs, either motivated by the recent detection of a deep 21cm absorption trough by the EDGES [110] experiment [111][112][113][114][115][116] or looking ahead to large-scale experiments such as the Square Kilometer Array [117]. Many other studies have examined the impact of matter accretion onto macroscopic PBHs that might seed early structure formation or produce X-ray backgrounds [118][119][120][121][122].…”

Section: F Other Constraintsmentioning

confidence: 99%

Primordial Black Hole Dark Matter in the Context of Extra Dimensions

Friedlander,

Mack,

Schon

et al. 2022

Preprint

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Theories of large extra dimensions (LEDs) such as the Arkani-Hamed, Dimopoulos & Dvali scenario predict a "true" Planck scale M near the TeV scale, while the observed M pl is due to the geometric effect of compact extra dimensions. These theories allow for the creation of primordial black holes (PBHs) in the early Universe, from the collisional formation and subsequent accretion of black holes in the high-temperature plasma, leading to a novel cold dark matter (sub)component. Because of their existence in a higher-dimensional space, the usual relationship between mass, radius and temperature is modified, leading to distinct behaviour with respect to their 4-dimensional counterparts. Here, we derive the cosmological creation and evolution of such PBH candidates, including the greybody factors describing their evaporation, and obtain limits on LED PBHs from direct observation of evaporation products, effects on big bang nucleosynthesis, and the cosmic microwave background angular power spectrum. Our limits cover scenarios of 2 to 6 extra dimensions, and PBH masses ranging from 1 to 10 22 g. We find that for two extra dimensions, LED PBHs represent a viable dark matter candidate with a range of possible black hole masses between 10 18 and 10 24 g depending on the Planck scale and reheating temperature. For M = 10 TeV, this corresponds to PBH dark matter with a mass of M 10 22 g, unconstrained by current observations. We further refine and update constraints on "ordinary" four-dimension black holes.

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Bounds on abundance of primordial black hole and dark matter from EDGES 21-cm signal

Cited by 27 publications

References 57 publications

Constraints on primordial black holes and curvature perturbations from the global 21-cm signal

Constraints on primordial black holes and curvature perturbations from the global 21-cm signal

A Brief Review on Primordial Black Holes as Dark Matter

Primordial Black Hole Dark Matter in the Context of Extra Dimensions

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