activity
20162026
most citedAn evolving jet from a strongly-magnetised accreting X-ray pulsar

82 citations · 323 across the 15 of their papers we have counts for

collaborators

15 papers

astro-ph.GA2026

A Phenomenological Study of the Accretion Disk in the Super-Eddington AGN I Zw 1

Farin Drewes, Roberta Vieliute, Juan V. Hernández Santisteban +11

The structure of the accretion disk in AGN is still an unsolved question, especially how it may change with Eddington ratio. Here we examine the accretion disk in the super-Eddingt…

astro-ph.GA2025

Departures from Standard Disk Predictions in Intensive Ground-Based Monitoring of Three AGN

Diego Gonzalez-Buitrago, Aaron J. Barth, Rick Edelson +42

We present ground-based, multi-band light curves of the AGN Mrk~509, NGC\,4151, and NGC\,4593 obtained contemporaneously with \sw\, monitoring. We measure cross-correlation lags re…

astro-ph.GA2025

Echo mapping of the black hole accretion flow in NGC 7469

Raj Prince, Juan V. Hernández Santisteban, Keith Horne +20

Reverberation mapping (RM) can measure black hole accretion disc sizes and radial structure through observed time lags that should increase with wavelength as . Ou…

astro-ph.HE2025★ 10 cited

DW Cnc: a micronova with a negative superhump and a flickering spin

M. Veresvarska, S. Scaringi, C. Littlefield +15

Magnetic accreting white dwarfs in cataclysmic variables have been known to show bursts driven by different physical mechanisms; however, the burst occurrence is much rarer than in…

astro-ph.HE2025★ 4 cited

Bridging the Gap: OPTICAM Reveals the Hidden Spin of the WZ Sge Star GOTO 065054.49+593624.51

N. Castro Segura, Z. A. Irving, F. M. Vincentelli +14

WZ Sge stars are highly evolved accreting white dwarf systems (AWDs) exhibiting remarkably large amplitude outbursts (a.k.a. super-outbursts), typically followed by short rebrighte…

astro-ph.HE2022★ 26 cited

The luminosity-dependent contribution from the broad line region to the wavelength-dependent lags in Mrk 110

F. M. Vincentelli, I. McHardy, V. Hernández Santisteban +5

We have measured the wavelength-dependent lags between the X-ray, UV and optical bands in the high accretion rate () Active Galactic Nucleus Mrk 110 durin…

astro-ph.HE2021★ 6 cited

AGN STORM 2: I. First results: A Change in the Weather of Mrk 817

Erin Kara, Missagh Mehdipour, Gerard A. Kriss +69

We present the first results from the ongoing, intensive, multi-wavelength monitoring program of the luminous Seyfert 1 galaxy Mrk 817. While this AGN was, in part, selected for it…

astro-ph.HE2021★ 66 cited

On the multi-wavelength variability of Mrk 110: Two components acting at different timescales

F. M. Vincentelli, I. McHardy, E. M. Cackett +17

We present the first intensive continuum reverberation mapping study of the high accretion rate Seyfert galaxy Mrk 110. The source was monitored almost daily for more than 200 days…

astro-ph.GA2020★ 7 cited

The Sloan Digital Sky Survey Reverberation Mapping Project: Photometric g and i Light Curves

K. Kinemuchi, Patrick B. Hall, Ian McGreer +28

The Sloan Digital Sky Survey Reverberation Mapping (SDSS-RM) program monitors 849 active galactic nuclei (AGN) both spectroscopically and photometrically. The photometric observati…

astro-ph.GA2020★ 30 cited

The Sloan Digital Sky Survey Reverberation Mapping Project: The M_BH-Host Relations at 0.2<z<0.6 from Reverberation Mapping and Hubble Space Telescope Imaging

Jennifer I-Hsiu Li, Yue Shen, Luis C. Ho +10

We present the results of a pilot Hubble Space Telescope (HST) imaging study of the host galaxies of ten quasars from the Sloan Digital Sky Survey Reverberation Mapping (SDSS-RM) p…

astro-ph.SR2018★ 7 cited

Quest for the Donor Star in the Magnetic Precataclysmic Variable V1082 Sgr

G. Tovmassian, J. F. Gonzalez, M. -S. Hernandez +3

We obtained high-resolution spectra and multicolor photometry of V1082 Sgr to study the donor star in this 20.8 hr orbital period binary, which is assumed to be a detached system.…

astro-ph.HE2018★ 82 cited

An evolving jet from a strongly-magnetised accreting X-ray pulsar

J. van den Eijnden, N. Degenaar, T. D. Russell +4

Relativistic jets are observed throughout the Universe, strongly impacting their surrounding environments on all physical scales, from Galactic binary systems to galaxies and galax…

astro-ph.HE2018

Multiwavelength observations of MASTER OT 075353.88+174907.6: a likely superoutburst of a long period dwarf nova system

A. S. Parikh, J. V. Hernández Santisteban, R. Wijnands +1

MASTER OT 075353.88+174907.6 was a blue optical transient reported by the MASTER-Net project on 2017 Oct 31. This source was previously detected by {\it GALEX} in its NUV band but…

astro-ph.SR2017★ 14 cited

The Space Density of Post-Period Minimum Cataclysmic Variables

J. V. Hernandez Santisteban, C. Knigge, M. L. Pretorius +2

Binary evolution theory predicts that accreting white dwarfs with sub-stellar companions dominate the Galactic population of cataclysmic variables (CVs). In order to test these pre…

astro-ph.HE2016★ 71 cited

Furiously Fast and Red: Sub-second Optical Flaring in V404 Cyg during the 2015 Outburst Peak

P. Gandhi, S. P. Littlefair, L. K. Hardy +25

We present observations of rapid (sub-second) optical flux variability in V404 Cyg during its 2015 June outburst. Simultaneous three-band observations with the ULTRACAM fast imager…