The 21cm Absorption Line and Axion Quark Nugget Dark Matter Model

Abstract

We argue that dark matter in the form of macroscopically large nuggets of standard model quarks and antiquarks can help to alleviate the tension between standard model cosmology and the recent EDGES observation of a stronger than anticipated 21 cm absorption feature. The effect occurs as a result of the thermal emission from quark nugget dark matter at early times and at energies well below the peak of the CMB. Similar radiation at early times may also contribute a fraction of the GHz range excess observed by ARCADE2.

Version accepted for publication in Physics of the Dark Universe

References in corpus (30)

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Cited by in corpus (34)

• Data Analysis for Precision 21 cm Cosmology
• The redshifted 21-cm signal in the EDGES low-band spectrum
• The Axion Quark Nugget Dark Matter Model: Size Distribution and Survival Pattern
• The Effects of Population III X-ray and Radio Backgrounds on the Cosmological 21-cm Signal
• Axion Quark Nuggets and how a Global Network can discover them
• Background of radio photons from primordial black holes
• The role of soft photon injection and heating in 21 cm cosmology
• Gravitationally trapped axions on Earth
• Infrasonic, acoustic and seismic waves produced by the Axion Quark Nuggets
• Limits on the flux of nuclearites and other heavy compact objects from the "Pi of the Sky" project
• Constraining spinning primordial black holes with global 21-cm signal
• Constraint on Primordial Magnetic Fields In the Light of ARCADE 2 and EDGES Observations
• The mysterious diffuse UV radiation and Axion Quark Nugget dark matter model
• Stratospheric temperature anomalies as imprints from the dark Universe
• Can accreting primordial black holes explain the excess radio background?
• Axion Quark Nugget Dark Matter: Time Modulations and Amplifications
• Structure Formation Paradigm and Axion Quark Nugget dark matter model
• DAMA/LIBRA annual modulation and Axion Quark Nugget Dark Matter Model
• New results by low momentum approximation from relativistic quantum mechanics equations and suggestion of experiments
• A closer look at dark photon explanations of the excess radio background
• Bounds on sterile neutrino lifetime and mixing angle with active neutrinos by global 21 cm signal
• X-ray annual modulation observed by XMM-Newton and Axion Quark Nugget Dark Matter
• The Pierre Auger Exotic Events and Axion Quark Nuggets
• Analysing the Epoch of Reionization with three-point correlation functions and machine learning techniques
• Primordial Magnetic Fields in Light of Dark Ages Global 21-cm Signal
• Mysterious anomalies in Earth's atmosphere and strongly interacting Dark Matter
• Telescope Array Bursts, Radio Pulses and Axion Quark Nuggets
• The Glow of Axion Quark Nugget Dark Matter: (II) Galaxy Clusters
• The Glow of Axion Quark Nugget Dark Matter: (I) Large Scale Structures
• Daily modulations and broadband strategy in axion searches. An application with CAST-CAPP detector
• Electric and magnetic axion quark nuggets, their stability and their detection
• Axion-Photon Conversion In Magnetized Universe: Impact On The Global 21-cm Signal
• Neutrino emission and initial evolution of axionic quark nuggets
• Neutron Stars as the Dark Matter detectors