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Article
Open AccessThe origin of rest-mass energy
Today we have a solid, if incomplete, physical picture of how inertia is created in the standard model. We know that most of the visible baryonic ‘mass’ in the Universe is due to gluonic back-reaction on accel...
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Article
Open AccessThermodynamics of the \(R_{\mathrm{h}}=ct\) Universe: a simplification of cosmic entropy
In the standard model of cosmology, the Universe began its expansion with an anomalously low entropy, which then grew dramatically to much larger values consistent with the physical conditions at decoupling, r...
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Article
Open AccessThe anomalous 21-cm absorption at high redshifts
The EDGES collaboration has reported the detection of a global 21-cm signal with a plateau centered at 76 MHz (i.e., redshift 17.2), with an amplitude of ...
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Article
Open AccessA comparison of the \(R_{\mathrm{h}}=ct\) and \(\varLambda \) CDM cosmologies based on the observed halo mass function
The growth of structure may be traced via the redshift-dependent halo mass function. This quantity probes the re-ionization history and quasar abundance in the Universe, constituting an important probe of the ...
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Article
Open AccessQuantum fluctuations at the Planck scale
The recently measured cutoff, \(k_\mathrm{min}=4.34\pm 0.50/r_{\mathrm{cmb}}\) ...
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Article
Open AccessA solution to the electroweak horizon problem in the \(R_\mathrm{h}=ct\) universe
Particle physics suggests that the Universe may have undergone several phase transitions, including the well-known inflationary event associated with the separation of the strong and electroweak forces in gran...
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Article
Open AccessCosmological tests with strong gravitational lenses using Gaussian processes
Strong gravitational lenses provide source/lens distance ratios \({\mathcal {D}}_{\mathrm{obs}}\) ...
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Article
The zero active mass condition in Friedmann–Robertson–Walker cosmologies
Many cosmological measurements today suggest that the Universe is expanding at a constant rate. This is inferred from the observed age versus redshift relationship and various distance indicators, all of which...
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Article
Physical basis for the symmetries in the Friedmann–Robertson–Walker metric
Modern cosmological theory is based on the Friedmann–Robertson–Walker (FRW) metric. Often written in terms of co-moving coordinates, this well-known solution to Einstein’s equations owes its elegant and highly...
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Article
A lower limit of 50 microgauss for the magnetic field near the Galactic Centre
There is ample evidence of a magnetic field near the centre of our Galaxy, but much uncertainty as to its strength. Estimates vary from the microgauss to the milligauss range — and values as great as 1,000 mic...
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Article
Odd company
Black holes cannot yet be seen directly, but their influence on surrounding stars is allowing them to be identified with increasing certainty. That those stars are there to be influenced, though, raises other ...
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Article
X-rays from the edge of infinity
The supermassive black hole at the centre of our Galaxy has a strong influence on its surroundings. Astronomers cannot yet see this beast directly but they now have a much better idea of its size.
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Chapter and Conference Paper
Formation of Broad Line Clouds from Turbulent Shocks in the Accretion Flows of Active Galactic Nuclei
We find that the formation of clouds capable of producing the broad emission lines seen in the spectra of most active galactic nuclei (AGNs) is possible within an unsteady, turbulent accretion flow. The result...
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Chapter
An Accreting Blackhole Model for SGR A*
The presence of a strong circumnuclear wind (with velocity νgw ≈ 500– 700 km s-1 and mass-loss rate ≈ 3 — 4 × 10-3 M ⊙ yr-1) in the vicinity of IRS 16 and Sgr A* is...
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Article
Geminga and the search for optical counterparts of γ-ray-burst sources
THE nature of gamma-ray-burst (GRB) sources has remained a mystery, in part because of the lack of any optical identification. Recently, deep CCD photometry has identified the optical counterpart G″ to the γ-ray ...
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Chapter and Conference Paper
The interaction of relativistic jets with the ambient radiation field
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Article
A new interpretation of emission-like features in γ-ray burst spectra
The spectra of γ-ray bursts, which are generally thought to result from a transient phenomenon on a neutron star, extend from the optical up to γ-ray energies. It has recently been suggested1 that the whole spect...
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Chapter and Conference Paper
The interaction of relativistic jets in AGNs with the ambient radiation field
