Gas heating from spinning and non-spinning evaporating primordial black holes

Laha, Ranjan; Lu, Philip; Takhistov, Volodymyr

doi:10.1016/j.physletb.2021.136459

Cited by 44 publications

(36 citation statements)

References 72 publications

(88 reference statements)

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“…Based on the Hawking radiation, there exist cornucopia of constraints from non-observation of emission products from PBH of mass region ∼ 5 × 10 14 − 2 × 10 17 g which are presently evaporating. Previous works have constrained this mass range via absence of any excess in electron-positron pairs [16][17][18][19][20][21], non-observation of neutrino flux from currents detectors [17] as well as the upcoming ones [22][23][24][25], the γ-rays observations [16,[26][27][28][29], X-rays observations [26,30], observation of radiosignals [31,32], 21-cm observations [33][34][35] and heating of interstellar medium [36,37] (for in-depth discussion on similar such studies of PBH, refer to Ref. [38][39][40][41]).…”

Section: Introductionmentioning

confidence: 99%

Future Constraints on Primordial Black Holes from XGIS-THESEUS

Ghosh,

Sachdeva,

Singh

2021

Preprint

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Current observations allow Primordial Black Holes (PBHs) in asteroid mass range 10 17 − 10 22 g to constitute the entire dark matter (DM) energy density (barring a small mass range constrained by 21 cm observations). In this work, we explore the possibility of probing PBH with masses 10 17 −10 19 g via upcoming X and Gamma Imaging Spectrometer (XGIS) telescope array on-board the Transient High-Energy Sky and Early Universe Surveyor (THESEUS) mission. While our projected limits are comparable with those proposed in the literature for 10 16 g < MPBH < 10 17 g, we show that the XGIS-THESEUS mission can potentially provide the strongest bound for 10 17 g < MPBH 3 × 10 18 g for non-rotating PBHs. The bounds become more stringent by nearly an order of magnitude for maximally rotating PBHs in the mass range 5 × 10 15 g < MPBH 10 19 g.

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Section: Introductionmentioning

confidence: 99%

Future Constraints on Primordial Black Holes from XGIS-THESEUS

Ghosh,

Sachdeva,

Singh

2021

Preprint

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“…For this assess-ment we calculate the specific intensity of very low energy (frequencies ∼ 1 GHz) photons from PBHs of representative mass ∼ 10 14 and 10 25 kg. The former case is interesting as PBHs of mass ∼ 10 14 kg can actually be constrained as dark matter candidate via non-observation of their Hawkingevaporated products (Carr et al 2010;Boudaud & Cirelli 2019;DeRocco & Graham 2019;Laha 2019;Arbey et al 2020;Ballesteros et al 2020;Laha et al 2020;Dasgupta et al 2020;Coogan et al 2021;Iguaz et al 2021;Cai et al 2021), by observation from upcoming X-ray, gamma-ray, gravitationalwave experiments (Ray et al 2021;Wang et al 2021;Calabrese et al 2021;De Romeri et al 2021;Ghosh et al 2021) or their effect on the thermal properties of the intergalactic medium (Clark et al 2017;Stöcker et al 2018;Acharya & Khatri 2020;Chan & Lee 2020;Cang et al 2021;Kim 2021;Laha et al 2021;Dutta et al 2021). The latter mass is not constrained by evaporation but via lensing effects such as those reported by Subaru Hyper Suprime-Cam (HSC, Niikura et al 2019a;Smyth et al 2020), Kepler satellite (Griest et al 2013(Griest et al , 2014, Optical Gravitational Lensing Experiment (OGLE, Niikura et al 2019b), Expérience de Recherche d'Objets Sombres (EROS, Tisserand et al 2007), Massive Compact Halo Object (MACHO, Alcock et al 2001, Icarus (Oguri et al 2018) and type Ia supernovae (Zumalacárregui & Seljak 2018).…”

Section: Introductionmentioning

confidence: 99%

Background of radio photons from primordial black holes

Mittal,

Kulkarni

2021

Preprint

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We compute the isotropic radiation background due to Hawking emission from primordial black holes (PBHs), and examine if this background is a viable option in explaining the excess radiowave background observed by the ARCADE2 and LWA1 experiments at 1 GHz. We find that even under the extreme assumption that all of the dark matter is in the form of PBHs, the radio brightness temperature induced by Hawking evaporation of PBHs is O(10 −46 ) K, highly subdominant compared to the cosmic microwave background. The main reason for this is that for PBHs in the mass range ∼ 10 12 -10 14 kg, which can be constrained by Hawking emission, the spectrum peaks at 10 7 to 10 5 eV. As the Hawking spectrum is power law suppressed towards lower energies, negligible flux of µeV photons is obtained. The peak of the Hawking spectrum shifts to lower energies for higher masses, but the number density is low and so is the specific intensity. Because Hawking emission from PBHs is thus unable to explain the observed excess radio background, we also consider the alternative possibility of radio emission from gas accretion onto supermassive PBHs. These PBHs can readily produce strong radio emission that could easily explain the ARCADE2/LWA1 excess.

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“…Other studies are based on the direct [23] or indirect detection of electrons-positrons [22,[24][25][26][27][28][29][30][31][32][33][34][35][36][37]; and finally there are some papers that focus on neutrino constraints [25,[38][39][40]. Most of the more recent studies now take into account the effect of having a non-zero PBH spin, which enhances the photon emission and thus results in more stringent constraints for Kerr (rotating) PBHs [9,13,18,19,25,28,32,37,40], or an extended PBH mass distribution, that should be more realistic regarding the channels of PBH formation [13,15,16,18,24,25,29,32,40]. Exotic studies have also derived constraints on non-standard (other than Kerr) PBHs [41][42][43] or PBH-DM mixed scenarios [44][45][46][47].…”

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confidence: 99%

Limits on primordial black holes detectability with Isatis: A BlackHawk tool

Auffinger

2022

Preprint

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Primordial black holes (PBHs) are convenient candidates to explain the elusive dark matter (DM). However, years of constraints from various astronomical observations have constrained their abundance over a wide range of masses, leaving only a narrow window open at 10 17 g M 10 22 g for all DM in the form of PBHs. We reexamine this disputed window with a critical eye, interrogating the general hypotheses underlying the direct photon constraints. We review 4 levels of assumptions: i) instrument characteristics, ii) prediction of the (extra)galactic photon flux, iii) statistical method of signal-to-data comparison and iv) computation of the Hawking radiation rate. Thanks to Isatis, a new tool designed for the public Hawking radiation code BlackHawk, we first revisit the existing and prospective constraints on the PBH abundance and investigate the impact of assumptions i)-iv). We show that the constraints can vary by several orders of magnitude, advocating the necessity of a reduction of the theoretical sources of uncertainties. Second, we consider an "ideal" instrument and we demonstrate that the PBH DM scenario can only be constrained by the direct photon Hawking radiation phenomenon below Mmax ∼ 10 20 g. The upper part of the mass window should therefore be closed by other means.

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Gas heating from spinning and non-spinning evaporating primordial black holes

Cited by 44 publications

References 72 publications

Future Constraints on Primordial Black Holes from XGIS-THESEUS

Future Constraints on Primordial Black Holes from XGIS-THESEUS

Background of radio photons from primordial black holes

Limits on primordial black holes detectability with Isatis: A BlackHawk tool

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