Jonathan McDowell
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View article: Prayer, particularity, and the subject of divine personhood: who are Brummer and Barth invoking when they pray?
Prayer, particularity, and the subject of divine personhood: who are Brummer and Barth invoking when they pray? Open
The title "Trinitarian Theology after Barth" is a deceptively simple one. With the reference to trinitarian theology it appears to have learned from Barth that the doctrine of the Trinity is no mere dogmatic addendum, merely another thing …
View article: 2005 VL1 is not Venera-2
2005 VL1 is not Venera-2 Open
The solar system object 2005 VL1 passed close to Earth in late 1965. It has been suggested that it is actually the space probe Venera-2. However, a comparison of the orbits presented in this note demonstrates that the proposed association …
View article: Joint EIFAAC/ICES/GFCM Working Group on Eels (WGEEL)
Joint EIFAAC/ICES/GFCM Working Group on Eels (WGEEL) Open
Update:April 2025: Corrected text on page 12 regarding the amount of glass eel recruitment series retained from NS and EE (60 series retained, 35 from NS and 25 from EE)December 2024: Updated Sweden Country Report to remove duplicate figur…
View article: Report of the Joint EIFAAC/ICES/GFCM Working Group on Eels (WGEEL)
Report of the Joint EIFAAC/ICES/GFCM Working Group on Eels (WGEEL) Open
Update:January 2025: Amended text in Paragraph 4.1.1.1. so the passage reads 'fisheries large and small'.The Joint EIFAAC/ICES/GFCM Working group on eels (WGEEL) met in a split meeting from 4–8 September (online) and 25 September–02 Octobe…
View article: Sherpa: An Open-source Python Fitting Package
Sherpa: An Open-source Python Fitting Package Open
We present an overview of Sherpa, an open-source Python project, and discuss its development history, broad design concepts, and capabilities. Sherpa contains powerful tools for combining parametric models into complex expressions that can…
View article: Sherpa: An Open Source Python Fitting Package
Sherpa: An Open Source Python Fitting Package Open
We present an overview of Sherpa, an open source Python project, and discuss its development history, broad design concepts and capabilities. Sherpa contains powerful tools for combining parametric models into complex expressions that can …
View article: Developing inventories of by-products from satellite megaconstellation launches and disposal to determine the influence on stratospheric ozone and climate
Developing inventories of by-products from satellite megaconstellation launches and disposal to determine the influence on stratospheric ozone and climate Open
There are close to 6000 megaconstellation satellites in low-Earth orbit comprising 65% of all satellites orbiting Earth. The growth in satellite megaconstellations has driven surges in rocket launches and re-entry destruction of spent sate…
View article: Disentangling the AGN and Star formation Contributions to the Radio–X-Ray Emission of Radio-loud Quasars at 1 < Z < 2
Disentangling the AGN and Star formation Contributions to the Radio–X-Ray Emission of Radio-loud Quasars at 1 < Z < 2 Open
We constrain the emission mechanisms responsible for the prodigious electromagnetic output generated by active galactic nuclei (AGNs) and their host galaxies with a novel state-of-the-art AGN radio-to-X-ray spectral energy distribution mod…
View article: 1022 Creation of the Northern Ireland paediatric education, audit and research network: enhancing trainee experience and improving patient care
1022 Creation of the Northern Ireland paediatric education, audit and research network: enhancing trainee experience and improving patient care Open
Aims Across paediatrics in Northern Ireland (NI), there are wide variations in clinical practice and no established pathway for the creation of regionally agreed guidelines. Local guidelines are often shared informally, with no central acc…
View article: SATCON2: Executive Summary
SATCON2: Executive Summary Open
About twenty years ago, rapid advances in technology led to the viability of lightemitting diodes (LEDs) as outdoor lighting. With compelling operational and economic reasons to make the shift from legacy gas-discharge systems, communities…
View article: SATCON2 Algorithms Working Group Report
SATCON2 Algorithms Working Group Report Open
We have attempted to transform the SATCON1 recommendations into a specific set of high-level software requirements with provisional names for convenience of reference. We note that each of these is a fairly major software effort if they ar…
View article: The Unusual Weak-line Quasar PG1407+265 and Its Foreground z ∼ 0.7 X-Ray Cluster
The Unusual Weak-line Quasar PG1407+265 and Its Foreground z ∼ 0.7 X-Ray Cluster Open
We present new observations of the odd z = 0.96 weak-line quasar PG1407+265, and report the discovery of CXOU J140927.9+261813, a z = 0.68 X-ray cluster. Archival X-ray photometry spanning nearly four decades reveals that PG1407+265 is var…
View article: CfA3: 185 TYPE Ia SUPERNOVA LIGHT CURVES FROM THE CfA
CfA3: 185 TYPE Ia SUPERNOVA LIGHT CURVES FROM THE CfA Open
We present multiband photometry of 185 type-Ia supernovae (SNe Ia), with over 11,500 observations. These were acquired between 2001 and 2008 at the F. L. Whipple Observatory of the Harvard-Smithsonian Center for Astrophysics (CfA). This sa…
View article: Beyond Simple AGN Unification with Chandra-observed 3CRR Sources at 0.5 < z < 1
Beyond Simple AGN Unification with Chandra-observed 3CRR Sources at 0.5 < z < 1 Open
Low-frequency radio selection finds radio-bright galaxies regardless of the amount of obscuration by gas and dust. We report Chandra observations of a complete 178 MHz–selected, and so orientation-unbiased, sample of 44 0.5 < z < 1 3CRR so…
View article: Disentangling the AGN and Star-Formation Contributions to the Radio-X-ray Emission of Radio-Loud Quasars at 1
Disentangling the AGN and Star-Formation Contributions to the Radio-X-ray Emission of Radio-Loud Quasars at 1 Open
We constrain the emission mechanisms responsible for the prodigious electromagnetic output generated by active galactic nuclei (AGN) and their host galaxies with a novel state-of-the-art AGN radio- to-X-ray spectral energy distribution mod…
View article: Disentangling the AGN and star-formation contributions to the radio-X-ray emission of radio-loud quasars at $1<z<2$
Disentangling the AGN and star-formation contributions to the radio-X-ray emission of radio-loud quasars at $1<z<2$ Open
\n We constrain the emission mechanisms responsible for the prodigious electromagnetic output generated by active galactic nuclei (AGNs) and their host galaxies with a novel state-of-the-art AGN radio-to-X-ray spectral energy distribution …
View article: Where does outer space begin?
Where does outer space begin? Open
As suborbital space tourism gears up, the decades-old debate about the boundary of Earth’s atmosphere continues.
View article: Impact of Satellite Constellations on Optical Astronomy and Recommendations Toward Mitigations
Impact of Satellite Constellations on Optical Astronomy and Recommendations Toward Mitigations Open
In May 2019 SpaceX launched its first batch of 60 Starlink communication satellites, which surprised astronomers and laypeople with their appearance in the night sky. Astronomers have only now, a little over a year later, accumulated enoug…
View article: Q wind code release: a non-hydrodynamical approach to modelling line-driven winds in active galactic nuclei
Q wind code release: a non-hydrodynamical approach to modelling line-driven winds in active galactic nuclei Open
Ultraviolet (UV) line-driven winds may be an important part of the active galactic nucleus (AGN) feedback process, but understanding their impact is hindered by the complex nature of the radiation hydrodynamics. Instead, we have taken the …
View article: The White Dwarf Opportunity - Supplementary material
The White Dwarf Opportunity - Supplementary material Open
Supplementary material for 'The White Dwarf Opportunity: Robust Detections of Molecules in Earth-like Exoplanet Atmospheres with the James Webb Space Telescope' - ApJL (2020). This repository contains three figures, and full posterior prob…
View article: The White Dwarf Opportunity - Supplementary material
The White Dwarf Opportunity - Supplementary material Open
Supplementary material for 'The White Dwarf Opportunity: Robust Detections of Molecules in Earth-like Exoplanet Atmospheres with the James Webb Space Telescope' - ApJL (2020). This repository contains three figures, and full posterior prob…
View article: Critical issues related to registration of space objects and transparency of space activities
Critical issues related to registration of space objects and transparency of space activities Open
The main purpose of the 1975 Registration Convention is to achieve transparency in space activities and this objective is motivated by the belief that a mandatory registration system would assist in the identification of space objects laun…
View article: X-Ray Emission from the Nuclear Region of Arp 220
X-Ray Emission from the Nuclear Region of Arp 220 Open
We present an imaging and spectral analysis of the nuclear region of the ultraluminous infrared galaxy merger of Arp 220, using deep Chandra -ACIS observations summing up to . Narrowband imaging with subpixel resolution of the innermos…
View article: Reaching the peak of the quasar spectral energy distribution – II. Exploring the accretion disc, dusty torus and host galaxy
Reaching the peak of the quasar spectral energy distribution – II. Exploring the accretion disc, dusty torus and host galaxy Open
We continue our study of the spectral energy distributions (SEDs) of 11 active galactic nuclei (AGN) at 1.5 < z < 2.2, with optical–near-infrared (NIR) spectra, X-ray data and mid-IR photometry. In a previous paper, we presented the observ…
View article: A Model for Type 2 Coronal Line Forest (CLiF) AGNs
A Model for Type 2 Coronal Line Forest (CLiF) AGNs Open
We present a model for the classification of Coronal Line Forest Active Galactic Nuclei (CLiF AGNs). CLiF
\nAGNs are of special interest due to their remarkably large number of emission lines, especially forbidden highionization
\nlines (F…
View article: Reaching the peak of the quasar spectral energy distribution – I. Observations and models
Reaching the peak of the quasar spectral energy distribution – I. Observations and models Open
We perform a spectral analysis of a sample of 11 medium redshift (1.5 < z <\n2.2) quasars. Our sample all have optical spectra from the SDSS, infrared\nspectra from GNIRS and TSPEC, and X-ray spectra from XMM-Newton. We first\nanalyse the …