A. A. Breeveld
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View article: Departures from standard disc predictions in intensive ground-based monitoring of three AGNs
Departures from standard disc predictions in intensive ground-based monitoring of three AGNs Open
We present ground-based multiband light curves of the AGN Mrk 509, NGC 4151, and NGC 4593 obtained contemporaneously with Swift monitoring. We measure cross-correlation lags relative to Swift UVW2 (1928 Å) and test the standard prediction …
View article: Evidence for an intrinsic luminosity-decay correlation in GRB radio afterglows
Evidence for an intrinsic luminosity-decay correlation in GRB radio afterglows Open
We present the discovery of a correlation, in a sample of 16 gamma-ray burst 8.5 GHz radio afterglows, between the intrinsic luminosity measured at 10 days in the rest frame, $L_{\mathrm{Radio,10d}}$, and the average rate of decay past thi…
View article: Evidence for an intrinsic luminosity–decay correlation in GRB radio afterglows
Evidence for an intrinsic luminosity–decay correlation in GRB radio afterglows Open
We present the discovery of a correlation, in a sample of 16 gamma-ray burst 8.5 GHz radio afterglows, between the intrinsic luminosity measured at 10 d in the rest frame, $L_{\mathrm{Radio,10\,d}}$, and the average rate of decay past this…
View article: The ultraviolet luminosity function of star-forming galaxies between redshifts of 0.4 and 0.6
The ultraviolet luminosity function of star-forming galaxies between redshifts of 0.4 and 0.6 Open
We combine ultraviolet imaging of the 13H survey field, taken with the XMM-Newton Optical Monitor telescope (XMM-OM) and the Neil Gehrels Swift Observatory Ultraviolet and Optical Telescope (UVOT) in the UVM2 band, to measure rest-frame ul…
View article: Panning for gold with the <i>Neil Gehrels Swift Observatory</i>: an optimal strategy for finding the counterparts to gravitational wave events
Panning for gold with the <i>Neil Gehrels Swift Observatory</i>: an optimal strategy for finding the counterparts to gravitational wave events Open
The LIGO, Virgo, and KAGRA (LVK) gravitational wave observatories are currently undertaking their O4 observing run offering the opportunity to discover new electromagnetic counterparts to gravitational wave events. We examine the capabilit…
View article: The ultraviolet luminosity function of star-forming galaxies between redshifts of 0.4 and 0.6
The ultraviolet luminosity function of star-forming galaxies between redshifts of 0.4 and 0.6 Open
We combine ultraviolet imaging of the $13^{H}$ survey field, taken with the XMM–Newton Optical Monitor telescope (XMM–OM) and the Neil Gehrels Swift Observatory Ultraviolet and Optical Telescope (UVOT) in the UVM2 band, to measure rest-fra…
View article: Panning for gold with the Neil Gehrels Swift Observatory: an optimal strategy for finding the counterparts to gravitational wave events
Panning for gold with the Neil Gehrels Swift Observatory: an optimal strategy for finding the counterparts to gravitational wave events Open
The LIGO, Virgo and KAGRA gravitational wave observatories are currently undertaking their O4 observing run offering the opportunity to discover new electromagnetic counterparts to gravitational wave events. We examine the capability of th…
View article: Converting grassland to wildflower meadow: impact on soil quality indicators for carbon sequestration
Converting grassland to wildflower meadow: impact on soil quality indicators for carbon sequestration Open
The extensive loss of carbon-rich, species-rich grasslands to agriculture and development has had detrimental impacts on wildflower abundance and diversity. Therefore, conversion of verges, lawns, and fields into wildflower meadows (WFMs) …
View article: On the bright end of the UV luminosity functions of galaxies at <i>z</i> ∼ 0.6–1.2
On the bright end of the UV luminosity functions of galaxies at <i>z</i> ∼ 0.6–1.2 Open
We derive the ultraviolet (UV) luminosity function (LF) of star-forming galaxies in the redshift range z = 0.6–1.2, in the rest-frame far-UV (1500 Å) wavelength. For this work, we are in particular interested in the bright end of the UV LF…
View article: <i>Swift</i>/UVOT discovery of <i>Swift</i> J221951−484240: a UV luminous ambiguous nuclear transient
<i>Swift</i>/UVOT discovery of <i>Swift</i> J221951−484240: a UV luminous ambiguous nuclear transient Open
We report the discovery of Swift J221951−484240 (hereafter: J221951), a luminous slow-evolving blue transient that was detected by the Neil Gehrels Swift Observatory Ultraviolet/Optical Telescope (Swift/UVOT) during the follow-up of gravit…
View article: Heavy-element production in a compact object merger observed by JWST
Heavy-element production in a compact object merger observed by JWST Open
View article: Monthly quasi-periodic eruptions from repeated stellar disruption by a massive black hole
Monthly quasi-periodic eruptions from repeated stellar disruption by a massive black hole Open
View article: JWST detection of heavy neutron capture elements in a compact object merger
JWST detection of heavy neutron capture elements in a compact object merger Open
The mergers of binary compact objects such as neutron stars and black holes are of central interest to several areas of astrophysics, including as the progenitors of gamma-ray bursts (GRBs), sources of high-frequency gravitational waves an…
View article: Swift/UVOT discovery of Swift J221951-484240: a UV luminous ambiguous nuclear transient
Swift/UVOT discovery of Swift J221951-484240: a UV luminous ambiguous nuclear transient Open
We report the discovery of Swift J221951-484240 (hereafter: J221951), a luminous slow-evolving blue transient that was detected by the Neil Gehrels Swift Observatory Ultra-violet/Optical Telescope (Swift/UVOT) during the follow-up of Gravi…
View article: Exploring the canonical behaviour of long Gamma-Ray Bursts using an intrinsic multi-wavelength afterglow correlation
Exploring the canonical behaviour of long Gamma-Ray Bursts using an intrinsic multi-wavelength afterglow correlation Open
View article: An investigation into the effect of exposing <i>XMM</i>–<i>Newton</i>’s <i>Optical Monitor</i> to the light of Jupiter
An investigation into the effect of exposing <i>XMM</i>–<i>Newton</i>’s <i>Optical Monitor</i> to the light of Jupiter Open
After nearly 18 yr of successful and safe operations, on 2017 July 17 and 18, XMM–Newton’s Optical Monitor (OM) observed Jupiter – an object 10 magnitudes brighter than safe brightness limits – in its visual (V) filter. The object was expo…
View article: On the bright-end of the UV luminosity functions of galaxies at $z \sim 0.6-1.2$
On the bright-end of the UV luminosity functions of galaxies at $z \sim 0.6-1.2$ Open
We derive the Ultra-Violet (UV) luminosity function (LF) of star-forming galaxies in the redshift range $z = 0.6 - 1.2$, in the rest-frame far-UV ($1500$ Å) wavelength. For this work, we are in particular interested in the bright end of th…
View article: Galaxy luminosity functions at redshifts 0.6–1.2 in the Chandra Deep Field South
Galaxy luminosity functions at redshifts 0.6–1.2 in the Chandra Deep Field South Open
We present the rest-frame ultraviolet (UV) galaxy luminosity function (LF) and luminosity density (LD) measurements in the far-UV (1500 Å) wavelength, in the redshift range $z$ = 0.6–1.2. The UV LF is derived using XMM-Newton Optical Monit…
View article: <i>Swift</i>/UVOT follow-up of gravitational wave alerts in the O3 era
<i>Swift</i>/UVOT follow-up of gravitational wave alerts in the O3 era Open
In this paper, we report on the observational performance of the Swift Ultra-violet/Optical Telescope (UVOT) in response to the gravitational wave (GW) alerts announced by the Advanced Laser Interferometer Gravitational Wave Observatory an…
View article: The ultraviolet luminosity function of star-forming galaxies between redshifts of 0.6 and 1.2
The ultraviolet luminosity function of star-forming galaxies between redshifts of 0.6 and 1.2 Open
We use ultraviolet (UV) imaging taken with the XMM–Newton Optical Monitor telescope (XMM-OM), covering 280 arcmin2 in the UVW1 band (λeff = 2910 Å) to measure rest-frame UV 1500-Å luminosity functions of galaxies with redshifts z between 0…
View article: Swift Multiwavelength Follow-up of LVC S200224ca and the Implications for Binary Black Hole Mergers
Swift Multiwavelength Follow-up of LVC S200224ca and the Implications for Binary Black Hole Mergers Open
On 2020 February 24, during their third observing run (“O3”), the Laser Interferometer Gravitational-wave Observatory and Virgo Collaboration detected S200224ca: a candidate gravitational wave (GW) event produced by a binary black hole (BB…
View article: Exploring the canonical behaviour of long gamma-ray bursts with an intrinsic multiwavelength afterglow correlation
Exploring the canonical behaviour of long gamma-ray bursts with an intrinsic multiwavelength afterglow correlation Open
In this conference proceeding we examine a correlation between the afterglow luminosity (measured at restframe 200 s; $\rm log\;L_{200\rm{s}}$) and average afterglow decay rate (measured from restframe 200 s onwards; $\alpha_{>200\rm{s}}$)…
View article: <i>Swift</i>-XRT follow-up of gravitational wave triggers during the third aLIGO/Virgo observing run
<i>Swift</i>-XRT follow-up of gravitational wave triggers during the third aLIGO/Virgo observing run Open
The Neil Gehrels Swift Observatory followed up 18 gravitational wave (GW) triggers from the LIGO/Virgo collaboration during the O3 observing run in 2019/2020, performing approximately 6500 pointings in total. Of these events, four were fin…
View article: Intensive disc-reverberation mapping of Fairall 9: first year of <i>Swift</i> and LCO monitoring
Intensive disc-reverberation mapping of Fairall 9: first year of <i>Swift</i> and LCO monitoring Open
We present results of time-series analysis of the first year of the Fairall 9 intensive disc-reverberation campaign. We used Swift and the Las Cumbres Observatory global telescope network to continuously monitor Fairall 9 from X-rays to ne…
View article: Intensive disc-reverberation mapping of Fairall 9: 1st year of Swift & LCO monitoring
Intensive disc-reverberation mapping of Fairall 9: 1st year of Swift & LCO monitoring Open
Swift and LCO light curves of the first year of monitoring of the nucleus of the Seyfert-1 galaxy Fairall 9. For details on data reduction, see https://ui.adsabs.harvard.edu/abs/2020MNRAS.498.5399H/abstract The file has 5 columns: …
View article: Intensive disc-reverberation mapping of Fairall 9: 1st year of Swift & LCO monitoring
Intensive disc-reverberation mapping of Fairall 9: 1st year of Swift & LCO monitoring Open
Swift and LCO light curves of the first year of monitoring of the nucleus of the Seyfert-1 galaxy Fairall 9. For details on data reduction, see https://ui.adsabs.harvard.edu/abs/2020MNRAS.498.5399H/abstract The file has 5 columns: …
View article: Swift-XRT Follow-up of Gravitational-wave Triggers in the Second Advanced LIGO/Virgo Observing Run
Swift-XRT Follow-up of Gravitational-wave Triggers in the Second Advanced LIGO/Virgo Observing Run Open
The Neil Gehrels Swift Observatory carried out prompt searches for gravitational-wave (GW) events detected by the LIGO/Virgo Collaboration (LVC) during the second observing run (“O2”). Swift performed extensive tiling of eight LVC triggers…
View article: The 2016 January eruption of recurrent Nova LMC 1968
The 2016 January eruption of recurrent Nova LMC 1968 Open
We present a comprehensive review of all observations of the eclipsing recurrent Nova LMC 1968 in the Large Magellanic Cloud which was previously observed in eruption in 1968, 1990, 2002, 2010, and most recently in 2016. We derive a probab…
View article: GRB 171010A/SN 2017htp: a GRB-SN at z = 0.33
GRB 171010A/SN 2017htp: a GRB-SN at z = 0.33 Open
The number of supernovae known to be connected with long-duration gamma-ray bursts (GRBs) is increasing and the link between these events is no longer exclusively found at low redshift (z ≲ 0.3) but is well established also at larger dista…