John Conway
John Conway is the Director of the Onsala Space Observatory. National Facility and Professor in Radio Astronomy at Chalmers
Showing 157 publications
First Sagittarius A∗ Event Horizon Telescope Results. VII. Polarization of the Ring
The Event Horizon Telescope Image of the Quasar NRAO 530
Subarcsecond-resolution Imaging of M51 with the International LOFAR Telescope
Comparison of Polarized Radiative Transfer Codes Used by the EHT Collaboration
Characterization of the Beam and the Aperture of the Onsala Twin Telescopes
SKA Science Data Challenge 2: analysis and results
A ring-like accretion structure in M87 connecting its black hole and jet
Polarimetric Geometric Modeling for mm-VLBI Observations of Black Holes
First M87 Event Horizon Telescope Results. IX. Detection of Near-horizon Circular Polarization
Resolving the Inner Parsec of the Blazar J1924-2914 with the Event Horizon Telescope
A repeating fast radio burst source in a globular cluster
Selective Dynamical Imaging of Interferometric Data
Millimeter Light Curves of Sagittarius A* Observed during the 2017 Event Horizon Telescope Campaign
Burst timescales and luminosities as links between young pulsars and fast radio bursts
First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric
The Variability of the Black Hole Image in M87 at the Dynamical Timescale
SEPIA345: A 345 GHz dual polarization heterodyne receiver channel for SEPIA at the APEX telescope
The LOFAR Two-metre Sky Survey: V. Second data release
The science case and challenges of space-borne sub-millimeter interferometry
Event Horizon Telescope observations of the jet launching and collimation in Centaurus A
Constraints on black-hole charges with the 2017 EHT observations of M87∗
THEZA: TeraHertz Exploration and Zooming-in for Astrophysics
First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon
Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign
Polarimetric Properties of Event Horizon Telescope Targets from ALMA
Low-frequency radio spectra of submillimetre galaxies in the Lockman Hole
The Polarized Image of a Synchrotron-emitting Ring of Gas Orbiting a Black Hole
First M87 Event Horizon Telescope Results. VII. Polarization of the Ring
Gravitational Test beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole
Monitoring the Morphology of M87* in 2009-2017 with the Event Horizon Telescope
Verification of Radiative Transfer Schemes for the EHT
The case against gravitational millilensing in the multiply-imaged quasar B1152+199
THEMIS: A Parameter Estimation Framework for the Event Horizon Telescope
First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole
First M87 Event Horizon Telescope Results. II. Array and Instrumentation
The LOFAR Two-metre Sky Survey: II. First data release
Molecular gas and dust properties of galaxies from the Great Observatories All-sky LIRG Survey
First M87 Event Horizon Telescope Results. I. the Shadow of the Supermassive Black Hole
The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project
First M87 Event Horizon Telescope Results. III. Data Processing and Calibration
First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
Wideband single pixel feed system over 4.6-24 GHz for the Square Kilometre Array
First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole
Status of the Onsala Twin Telescopes – Two Years After the Inauguration
Design trade-offs in feed systems for ultra-wideband VLBI observations
Reliable detection and characterization of low-frequency polarized sources in the LOFAR M51 field
Continuum and Spectral Line Radiation from a Random Clumpy Medium
SEPIA - A new single pixel receiver at the APEX telescope
LOFAR MSSS: Flattening low-frequency radio continuum spectra of nearby galaxies
Measuring size evolution of distant, faint galaxies in the radio regime
Ultra-wideband feed systems for the EVN and SKA - evaluated for VGOS
The LOFAR Two-metre Sky Survey: I. Survey description and preliminary data release
Atomic hydrogen bridge fueling NGC 4418 with gas from VV 655
The Onsala Twin Telescopes Project
Unveiling the AGN in IC 883: discovery of a parsec-scale radio jet
The Onsala Twin Telescopes: the Status at the Time for the Inauguration
Extragalactic Water Megamasers using ALMA Band 5
A large light-mass component of cosmic rays at 10(17)-10(17.5) electronvolts from radio observations
Estimating sizes of faint, distant galaxies in the submillimetre regime
In memory of Professor Per-Simon Kildal
Detection of 183 GHz H2O megamaser emission towards NGC 4945
LOFAR/H-ATLAS: a deep low-frequency survey of the Herschel-ATLAS North Galactic Pole field
LBCS: The LOFAR Long-Baseline Calibrator Survey
LOFAR 150-MHz observations of the Bootes field: catalogue and source counts
The Africa Millimetre Telescope
an overview of the MHONGOOSE survey: Observing nearby galaxies with MeerKAT
A new 3 mm band receiver for the Onsala 20 m antenna
THE 2014 ALMA LONG BASELINE CAMPAIGN: AN OVERVIEW
Stacking of Interferometric Data: New Tools for Stacking of ALMA Data
Stacking of SKA data: comparing uv-plane and and image-plane stacking
AGN duty cycle estimates for the ultra-steep spectrum radio relic VLSS J1431.8+1331
The LOFAR Multifrequency Snapshot Sky Survey (MSSS) I. Survey description and first results
Stacking of large interferometric data sets in the image- and uv-domain - a comparative study
LBCS: The LOFAR long baseline snapshot calibrator survey
First 230? GHz VLBI fringes on 3C 279 using the APEX Telescope (Research Note)
Subarcsecond international LOFAR radio images of the M82 nucleus at 118 MHz and 154 MHz
The nature of the low-frequency emission of M 51 First observations of a nearby galaxy with LOFAR
Solving the polarization problem in ALMA-VLBI observations
The LOFAR long baseline snapshot calibrator survey
The nature of supernovae 2010O and 2010P in Arp 299 - II. Radio emission
Discovery of Carbon Radio Recombination Lines in M82
Discovery of carbon radio recombination lines in absorption towards Cygnus A
LOFAR tied-array imaging of Type III solar radio bursts
EVN imaging of the LIRGI sample
Core-collapse and type ia supernovae with the SKA
LOFAR detections of low-frequency radio recombination lines towards Cassiopeia A
Initial deep LOFAR observations of epoch of reionization windows I. The north celestial pole
LOFAR: The low-frequency array
The circumnuclear cold gas environments of the powerful radio galaxies 3C 236 and 4C 31.04
Rapid variability of the compact radio sources in Arp220 Evidence for a population of microblazars?
LOFAR calibration and wide-field imaging
M 87 at metre wavelengths: the LOFAR picture
Observing pulsars and fast transients with LOFAR
Resolution of the Compact Radio Continuum Sources in Arp220
LOFAR: Recent Imaging Results and Future Prospects
LOFAR and APERTIF Surveys of the Radio Sky: Probing Shocks and Magnetic Fields in Galaxy Clusters
An HI absorbing circumnuclear disk in Cygnus A
P Cygni Profiles of Molecular Lines Toward Arp 220 Nuclei
A differentially rotating disc in a high-mass protostellar system
Scientific applications of e-VLBI
Continuum surveys with LOFAR and synergy with future large surveys in the 1 – 2 GHz band
e-VLBI related activities at Onsala Space Observatory
Future investigations of GPS and CSS radio sources with LOFAR
A general catalogue of 6.7 GHz methanol masers. II. statistical analysis
The radio spectra of the compact sources in Arp 220: A mixed population of
Radio properties of young SNe/SNRs in Arp220
Discovery of two new methanol masers in NGC 7538
Multiwavelength radio observations of the compact starburst in Arp 220
A Thin Ring Model for the OH Megamaser in IIIZW35
Continuum EVN and MERLIN observations of ultra luminous infrared galaxies
Preliminary Results from the COLAN Sample
NGC7538 Irs1N: Modelling a Circumstellar Maser Disc
A compact starburst ring traced by clumpy OH megamaser emission
Spectral Line and Continuum Radiation Propagation in a Clumpy Medium
Cotinuum EVN and MERLIN Observations of Ultra Luminous Infrared Galaxies
SiO Masers in TX Cam: Simultaneous VLBA Observations of Two 43 GHz Masers at Four Epochs
A circumstellar disk in a high-mass star-forming region
Millimetre VLBI monitoring of AGN with sub-milliarcsecond resolution
EVN and MERLIN Observations of a Complete Sample of Ultra Luminous Infrared Galaxies
Modelling OH Megamasers in by Clumpy Starburst Rings
Continuum EVN and MERLIN observations of ultra luminous infrared galaxies
Erratum: "A Circumstellar Disk in a High-Mass Star-forming Region" (ApJ, 603, L113)
Towards the event horizon - the vicinity of AGN at micro-arcsecond resolution
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Showing 8 research projects
Advanced European Network of E-infrastructures for Astronomy with the SKA (AENEAS)
Preparing for MID-SKA receiving concepts in South-Africa (MIDPREP)
Advanced Radio Astronomy in Europe (RADIONET3)
Novel EXplorations Pushing Robust e-VLBI Services (NEXPReS)