Massive Argon Space Telescope (MAST): A concept of heavy time projection chamber for γ-ray astronomy in the 100 MeV–1 TeV energy range

Dzhatdoev, T.; Podlesnyi, E. I.

doi:10.1016/j.astropartphys.2019.04.004

Cited by 30 publications

(28 citation statements)

References 90 publications

(116 reference statements)

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“…4. Left:Effective area for prospective optical instruments (see text), adapted from Refs [10,19,76,77]…”

mentioning

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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“…4. Left:Effective area for prospective optical instruments (see text), adapted from Refs [10,19,76,77]…”

mentioning

confidence: 99%

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

Auffinger

2022

Preprint

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“…The neutrino intensity is measured at the neutrino observatory IceCube [31] and the PAO [32] in the energy range of about (100-3 × 10 6 ) GeV and (2 × 10 8 -2 × 10 10 ) GeV, respectively. It appears that model I satisfies condition (6), both in the IceCube and in the PAO energy range, when the proton injection spectra have indices a > 0.5.…”

Section: Results Of Model Imentioning

confidence: 99%

Studying Cosmic Ray Sources Using Intergalactic Electromagnetic Cascades

Uryson¹

2021

Universe

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In this paper, intergalactic electromagnetic cascades are used as a probe of cosmic ray sources. This is achieved as follows. In extragalactic space, cosmic rays initiate electromagnetic cascades, in which gamma-ray and neutrino emission arises. We used the joint analysis of cosmic ray data, along with extragalactic gamma-ray and neutrino emissions, to study particle acceleration in the vicinity of supermassive black holes. Particle injection spectra depend on processes of particle acceleration, and here we discuss models with various injection spectra. The computations of the propagation of cosmic rays in space were performed using the publicly available TransportCR code. It was found that a new subclass of sources might exist that does not contribute to the particle flux on Earth, instead to gamma-ray and neutrino emissions arising in electromagnetic cascades. In addition, the upper limit of the relative number of ‘exotic’ supermassive black holes surrounded by a superstrong magnetic field is derived.

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“…Several missions with capabilities in the MeV are in the proposal, planning, or construction phase. Here, we consider the following: AdEPT [58], AMEGO [20], All-Sky-ASTROGAM [59], GECCO [25,26,60], MAST [19], PANGU [15,16] and GRAMS [17,18]. These are each characterized by an energy-dependent effective area A eff (E) and energy resolution (E).…”

Section: Gamma-ray Constraintsmentioning

confidence: 99%

“…1). Several experiments have been proposed to close this gap: GAMMA-400 [11,12], Advanced Compton Telescope (ACT) [13], Advanced Energetic Pair Telescope (AdEPT) [14], PANGU [15,16], GRAMS [17,18], MAST [19], AMEGO [20][21][22] 1 and All-Sky-ASTROGAM [23] (a scaled-back version of e-ASTROGAM [24]). 2 Another promising telescope is the Galactic Explorer with a Coded Aperture Mask Compton Telescope (GECCO), which encapsulates at once the principles of a Compton telescope and of a coded-aperture mask telescope [25].…”

Section: Introductionmentioning

confidence: 99%

Precision Gamma-Ray Constraints for Sub-GeV Dark Matter Models

Coogan,

Morrison,

Profumo

2021

Preprint

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The indirect detection of dark matter particles with mass below the GeV scale has recently received significant attention. Future space-borne gamma-ray telescopes, including All-Sky-ASTROGAM, AMEGO, and GECCO, will probe the MeV gamma-ray sky with unprecedented precision, offering an exciting test of particle dark matter in the MeV-GeV mass range. While it is typically assumed that dark matter annihilates into only one Standard Model final state, this is not the case for realistic dark matter models. In this work we analyze existing indirect detection constraints and the discovery reach of future detectors for the well-motivated Higgs and vector-portal models using our publicly-available code Hazma. In particular, we show how to leverage chiral perturbation theory to compute the dark matter self-annihilation cross sections into final states containing mesons, the strongly-interacting Standard Model dynamical degrees of freedom below the GeV scale. We find that future telescopes could probe dark matter self-annihilation cross sections orders of magnitude smaller than those presently constrained by cosmic microwave background, gamma-ray and terrestrial observations.

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Massive Argon Space Telescope (MAST): A concept of heavy time projection chamber for γ-ray astronomy in the 100 MeV–1 TeV energy range

Cited by 30 publications

References 90 publications

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

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

Studying Cosmic Ray Sources Using Intergalactic Electromagnetic Cascades

Precision Gamma-Ray Constraints for Sub-GeV Dark Matter Models

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