A5076374364- Pulsars and Gravitational Waves Research
- Radio Astronomy Observations and Technology
- Particle accelerators and beam dynamics
- Astrophysical Phenomena and Observations
- Geophysics and Gravity Measurements
- Superconducting Materials and Applications
- Particle physics theoretical and experimental studies
- Galaxies: Formation, Evolution, Phenomena
- High-pressure geophysics and materials
- Astrophysics and Cosmic Phenomena
- Astrophysics and Star Formation Studies
- Gamma-ray bursts and supernovae
- Advanced Frequency and Time Standards
- GNSS positioning and interference
- Stellar, planetary, and galactic studies
Max Planck Institute for Radio Astronomy
2023-2024
South African Radio Astronomy Observatory
2020-2022
Rhodes University
2017-2022
SKA Telescope, South Africa
2018
Abstract The inner ∼200 pc region of the Galaxy contains a 4 million M ⊙ supermassive black hole (SMBH), significant quantities molecular gas, and star formation cosmic-ray energy densities that are roughly two orders magnitude higher than corresponding levels in Galactic disk. At distance only 8.2 kpc, presents astronomers with unique opportunity to study diverse range energetic astrophysical phenomena, from stellar objects extreme environments, SMBH star-formation-driven feedback processes...
The MPIfR-MeerKAT Galactic Plane survey at L -band (MMGPS-L) is the most sensitive pulsar in Southern Hemisphere, providing 78 discoveries an area of 900 sq. deg. Here, we present a follow-up study one these new discoveries, PSR J1208−5936, 28.71-ms recycled double neutron star system with orbital period P b = 0.632 days and eccentricity e 0.348, merging within Hubble time. Through timing almost year observations, detected relativistic advance periastron ( ω̇ 0.918(1) deg yr −1 ), resulting...
With its extreme density of stars and stellar remnants, dense young massive clusters, high specific star formation rate, intense radiation field, magnetic field strength, properties the interstellar medium that resemble those in redshift galaxies starbursts, Galactic Centre is most environment we can observe detail. It also only nucleus a galaxy with resolution just few milli parsecs. This makes it crucial target to understand physics galactic nuclei formation, as well connection between...
We present the first widefield extragalactic continuum catalogue with MeerKAT S-band (2.5 GHz), of radio-selected DEEP2 field. The combined image over S1 (1.96 - 2.84 GHz) and S4 (2.62 3.50 sub-bands has an angular resolution 6.8''$\times$3.6'' (4.0''$\times$2.4'') at a robust weighting $R = 0.3$ ($R=-0.5$) sensitivity 4.7 (7.5) $\mu$Jy beam$^{-1}$ on-source integration time 70 minutes minimum 52 64 antennas, for respective observations. differential source counts this field, as well...
Abstract We present the first widefield extragalactic continuum catalogue with MeerKAT S-band (2.5 GHz), of radio-selected DEEP2 field. The combined image over S1 (1.96 – 2.84 GHz) and S4 (2.62 3.50 sub-bands has an angular resolution 6.8”×3.6” (4.0”×2.4”) at a robust weighting R = 0.3 (R −0.5) sensitivity 4.7 (7.5) µJy beam−1 on-source integration time 70 minutes minimum 52 64 antennas, for respective observations. differential source counts this field, as well morphological comparison...
Abstract The aim of our project is to search for ways best extract information on pulsar profiles and the interstellar medium (ISM), using wide frequency bands that are typical radio telescopes today. Pulsar typically show a strong dependence frequency. This depends both intrinsic emission mechanism, interaction waves with ISM lies between pulsars detectors Earth, due mostly effects dispersion scattering. In this work, we make use beam models from existing literature, generate simulated...
Abstract Sgr E is a massive star formation complex found toward the Galactic center that consists of numerous discrete, compact H ii regions. It located at intersection between central molecular zone (CMZ) and far dust lane bar, similar to “hot spots” seen in external galaxies. Compared with other complexes, unusual because its regions all have radio luminosities angular extents, they are deficient ∼10 μ m emission from their photodissociation (PDRs). Our Green Bank Telescope recombination...
The MMGPS-L is the most sensitive pulsar survey in Southern Hemisphere. We present a follow-up study of one these new discoveries, PSR J1208-5936, 28.71-ms recycled double neutron star system with an orbital period Pb=0.632 days and eccentricity e=0.348. Through timing almost year observations, we detected relativistic advance periastron (0.918(1) deg/yr), resulting total mass Mt=2.586(5) Mo. also achieved low-significance constraints on amplitude Einstein delay Shapiro delay, turn yielding...