activity
20142023
most citedTowards precision measurements of accreting black holes using X-ray reflection spectroscopy

152 citations · 2.4k across the 65 of their papers we have counts for

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Showing 2021Show all

7 papers · 1 filter

astro-ph.HE2021

A significant detection of X-ray Polarization in Sco X-1 with PolarLight and constraints on the corona geometry

Xiangyun Long, Hua Feng, Hong Li +23

We report the detection of X-ray polarization in the neutron star low mass X-ray binary Scorpius (Sco) X-1 with PolarLight. The result is energy dependent, with a non-detection in…

astro-ph.HE2021★ 50 cited

Discovery of the Fastest Early Optical Emission from Overluminous SN Ia 2020hvf: A Thermonuclear Explosion within a Dense Circumstellar Environment

Ji-an Jiang, Keiichi Maeda, Miho Kawabata +28

In this Letter we report a discovery of a prominent flash of a peculiar overluminous Type Ia supernova, SN 2020hvf, in about 5 hours of the supernova explosion by the first wide-fi…

astro-ph.HE2021★ 1 cited

Spectral and Timing Analysis of NuSTAR and Swift/XRT Observations of the X-Ray Transient MAXI J0637-430

Hadar Lazar, John A. Tomsick, Sean N. Pike +10

We present results for the first observed outburst from the transient X-ray binary source MAXI J0637-430. This study is based on eight observations from the Nuclear Spectroscopic T…

astro-ph.HE2021

Photospheric Radius Expansion and a double-peaked type-I X-ray burst from GRS 1741.9-2853

Sean N. Pike, Fiona A. Harrison, John A. Tomsick +6

We present analysis of two type-I X-ray bursts observed by NuSTAR originating from the very faint transient neutron star low-mass X-ray binary GRS 1741.9-2853 during a period of ou…

astro-ph.HE2021★ 4 cited

A Highly Accreting Low-Mass Black Hole Hidden in the Dust: Suzaku and NuSTAR observations of the NLS1 Mrk 1239

Jiachen Jiang, Mislav Baloković, Murray Brightman +3

We present torus modelling for the X-ray spectra of a nearby narrow-line Seyfert 1 galaxy Mrk 1239 (), based on archival Suzaku, NuSTAR and Swift observations. Our model…

astro-ph.HE2021★ 25 cited

Modelling the Multiwavelength Variability of Mrk 335 using Gaussian Processes

Ryan-Rhys Griffiths, Jiachen Jiang, Douglas J. K. Buisson +12

The optical and UV variability of the majority of AGN may be related to the reprocessing of rapidly-changing X-ray emission from a more compact region near the central black hole.…

astro-ph.HE2021★ 49 cited

Reflection Modeling of the Black Hole Binary 4U~163047: the Disk Density and Returning Radiation

Riley Connors, Javier García, John Tomsick +11

We present the analysis of X-ray observations of the black hole binary 4U~163047 using relativistic reflection spectroscopy. We use archival data from the RXTE, Swift, and NuSTA…