Research summary
First-year COBE Differential Microwave Radiometer data revealed statistically significant CMB structure consistent with scale-invariant Gaussian fluctuations: an rms sky variation of 30 +/- 5 microK at 10-degree FWHM for |b| > 20 degrees, an rms quadrupole of 13 +/- 4 microK, and a power-law spectral index of 1.1 +/- 0.5 [1]. The DMR dipole was determined from the same first-year data at amplitude 3.365 +/- 0.027 mK toward (l, b) = (264.4 +/- 0.3, 48.4 +/- 0.5) degrees, giving a Local-Group velocity of 627 +/- 22 km/s; the Earth's orbital dipole was also mapped [5]. Four-year DMR data with Galactic-emission correction gave a power-law index n = 1.2 +/- 0.3 and Q_rms-PS = 15.31 +3.8/-2.8 microK (Q_rms-PS|n=1 = 18 +/- 1.6 microK), consistent with the first-year and two-year results [2]. The Physics of the B Factories volume documented the combined BABAR and Belle programme of measurements at the Upsilon(4S) [3]. A frequentist and Bayesian analysis of the scalar singlet dark-matter model showed that the low-mass resonance region around half the Higgs mass accounts for all of dark matter but is fine-tuned, and that only at masses near 1 TeV can the singlet make up all of dark matter [7]. Formation-factor measurements on natural and artificial sand samples (varying both grain size and shape) showed that all samples follow Archie's law FF = n^-m, with the exponent m increasing as particles became less spherical and largely insensitive to size or size spread; the data produced a generalised FF-porosity relation [4]. Dome growth at the Soufriere Hills volcano, Montserrat, between 1996 and 1998 was characterised by repetitive cycles of earthquakes, ground deformation, degassing, and explosive activity arising from unsteady conduit flow of volatile-charged magma, with cycle duration controlled by ascent rate, degassing, and microlite crystallisation kinetics [6].
Recent publications
- Structure in the COBE differential microwave radiometer first-year mapsDOI
- Four-Year [ITAL]COBE[/ITAL] DMR Cosmic Microwave Background Observations: Maps and Basic ResultsDOI
- The Physics of the B FactoriesDOI
- Resistivity-porosity-particle shape relationships for marine sandsDOI
- Production spectra of 蟺卤, K卤, p卤 at large angles in proton-proton collisions in the CERN intersecting storage ringsDOI
- Dipole Anisotropy in the COBE Differential Microwave Radiometers First-Year Sky MapsDOI
- Magma Flow Instability and Cyclic Activity at Soufriere Hills Volcano, Montserrat, British West IndiesDOI
- A model for case assessment and interpretationDOI
- Status of the scalar singlet dark matter modelDOI
- The sequence and topology of human complement component C9.DOI
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External profiles
- ORCID: https://orcid.org/0000-0002-0847-402X
- OpenAlex: openalex.org
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