output
19992026
most citedThe Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package

7.7k citations

Showing 2021Show all

52 papers · 1 filter

astro-ph.HE2021★ 2 cited

An Analytic, Fully Relativistic Framework for Tidal Disruption Event Streams in Schwarzschild Geometry

Alexander J. Dittmann

We present an analytic and fully relativistic framework for studying the self-intersection of tidal disruption event (TDE) streams, restricting ourselves to the Schwarzschild space…

astro-ph.GA2021★ 52 cited

Molecular Gas Properties and CO-to-H2 Conversion Factors in the Central Kiloparsec of NGC 3351

Yu-Hsuan Teng, Karin M. Sandstrom, Jiayi Sun +16

The CO-to-H conversion factor ($α_\rm{CO}$) is critical to studying molecular gas and star formation in galaxies. The value of $α_\rm{CO}$ has been found to vary within and bet…

astro-ph.SR2021

Microlensing Events in the Galactic Plane Using the Zwicky Transient Facility

Antonio C. Rodriguez, Przemek Mróz, Shrinivas R. Kulkarni +9

Microlensing is a powerful technique to study the Galactic population of "dark" objects such as exoplanets both bound and unbound, brown dwarfs, low-luminosity stars, old white dwa…

astro-ph.GA2021★ 15 cited

Galactic Winds across the Gas-Rich Merger Sequence: I. Highly Ionized N V and O VI Outflows in the QUEST Quasars

Sylvain Veilleux, David S. N. Rupke, Weizhe Liu +12

This program is part of QUEST (Quasar/ULIRG Evolutionary Study) and seeks to examine the gaseous environments of z < 0.3 quasars and ULIRGs as a function of host galaxy properties…

astro-ph.GA2021★ 36 cited

BASS XXIX: The near-infrared view of the BLR: the effects of obscuration in BLR characterisation

Ricci F., Treister E., Bauer F. E. +24

Virial black hole mass () determination directly involves knowing the broad line region (BLR) clouds velocity distribution, their distance from the central supermassive bla…

astro-ph.HE2021★ 28 cited

A NICER look at thermonuclear X-ray bursts from Aql X-1

Tolga Guver, Tugba Boztepe, David R. Ballantyne +8

We present spectral and temporal properties of all the thermonuclear X-ray bursts observed from Aql X-1 by the Neutron Star Interior and Composition Explorer (NICER) between 2017 J…

astro-ph.HE2021★ 31 cited

The early afterglow of GRB 190829A

S. Dichiara, E. Troja, V. Lipunov +19

GRB 190829A at z=0.0785 is the fourth closest long GRB ever detected by the Neil Gehrels Swift observatory, and the third confirmed case with a very high energy component. We prese…

astro-ph.HE2021★ 21 cited

Instrumental Tip-of-the-iceberg Effects on the Prompt Emission of Swift/BAT Gamma-ray Bursts

M. Moss, A. Lien, S. Guiriec +2

The observed durations of prompt gamma-ray emission from gamma-ray bursts (GRBs) are often used to infer the progenitors and energetics of the sources. Inaccurate duration measurem…

astro-ph.HE2021★ 5 cited

Identification of an X-ray Pulsar in the BeXRB system IGR J182191347

B. O'Connor, E. Gogus, D. Huppenkothen +25

We report on observations of the candidate Be/X-ray binary IGR J182191347 with \textit{Swift}/XRT, \textit{NuSTAR}, and \textit{NICER} during Type-I outbursts in March and June…

astro-ph.HE2021★ 131 cited

Candidate Tidal Disruption Event AT2019fdr Coincident with a High-Energy Neutrino

Simeon Reusch, Robert Stein, Marek Kowalski +46

The origins of the high-energy cosmic neutrino flux remain largely unknown. Recently, one high-energy neutrino was associated with a tidal disruption event (TDE). Here we present A…

astro-ph.HE2021★ 52 cited

Target of Opportunity Observations of Gravitational Wave Events with Vera C. Rubin Observatory

Igor Andreoni, Raffaella Margutti, Om Sharan Salafia +52

The discovery of the electromagnetic counterpart to the binary neutron star merger GW170817 has opened the era of gravitational-wave multi-messenger astronomy. Rapid identification…

astro-ph.IM2021★ 16 cited

Give Me a Few Hours: Exploring Short Timescales in Rubin Observatory Cadence Simulations

Eric C. Bellm, Colin J. Burke, Michael W. Coughlin +3

The limiting temporal resolution of a time-domain survey in detecting transient behavior is set by the time between observations of the same sky area. We analyze the distribution o…

astro-ph.GA2021★ 11 cited

Exploring the Dust Content of Galactic Halos with Herschel. IV. NGC 3079

S. Veilleux, M. Melendez, M. Stone +11

We present the results from an analysis of deep Herschel far-infrared observations of the edge-on disk galaxy NGC 3079. The PSF-cleaned PACS images at 100 and 160 um display a 25 k…

astro-ph.GA2021★ 26 cited

ALMA Imaging of a Galactic Molecular Outflow in NGC4945

Alberto D. Bolatto, Adam K. Leroy, Rebecca C. Levy +10

We present the ALMA detection of molecular outflowing gas in the central regions of NGC4945, one of the nearest starbursts and also one of the nearest hosts of an active galactic n…

astro-ph.SR2021★ 117 cited

A solar source of Alfvénic magnetic field switchbacks: {\em in situ} remnants of magnetic funnels on supergranulation scales

S. D. Bale, T. S. Horbury, M. Velli +17

One of the striking observations from the Parker Solar Probe (PSP) spacecraft is the prevalence in the inner heliosphere of large amplitude, Alfvénic magnetic field reversals terme…

astro-ph.SR2021★ 27 cited

Correlated Spatiotemporal Evolution of Extreme-Ultraviolet Ribbons and Hard X-rays in a Solar Flare

Stephen J. Naus, Jiong Qiu, C. Richard DeVore +4

We analyze the structure and evolution of ribbons from the M7.3 SOL2014-04-18T13 flare using ultraviolet (UV) images from IRIS and SDO/AIA, magnetic data from SDO/HMI, hard X-ray (…

astro-ph.HE2021★ 61 cited

Search for continuous gravitational waves from 20 accreting millisecond X-ray pulsars in O3 LIGO data

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1634

Results are presented of searches for continuous gravitational waves from 20 accreting millisecond X-ray pulsars with accurately measured spin frequencies and orbital parameters, u…

astro-ph.SR2021★ 27 cited

Flux rope merging and the structure of switchbacks in the solar wind

O. Agapitov, J. F. Drake, M. Swisdak +9

A major discovery of Parker Solar Probe (PSP) was the presence of large numbers of localized increases in the radial solar wind speed and associated sharp deflections of the magnet…

astro-ph.HE2021★ 10 cited

Probing the circumnuclear environment of NGC1275 with High-Resolution X-ray spectroscopy

Christopher S. Reynolds, Robyn N. Smith, Andrew C. Fabian +6

NGC1275 is the Brightest Cluster Galaxy (BCG) in the Perseus cluster and hosts the active galactic nucleus (AGN) that is heating the central 100\,kpc of the intracluster medium (IC…

astro-ph.HE2021★ 71 cited

The Uncertain Future of Massive Binaries Obscures the Origin of LIGO/Virgo Sources

K. Belczynski, A. Romagnolo, A. Olejak +6

The LIGO/Virgo gravitational--wave observatories have detected 50 BH-BH coalescences. This sample is large enough to have allowed several recent studies to draw conclusions about t…

astro-ph.EP2021★ 15 cited

On the Terminal Spins of Accreting Stars and Planets: Boundary Layers

Alexander J. Dittmann

The origin of the spins of giant planets is an open question in astrophysics. As planets and stars accrete from discs, if the specific angular momentum accreted corresponds to that…

astro-ph.HE2021

A month of monitoring the new magnetar Swift J1555.2-5402 during an X-ray outburst

Teruaki Enoto, Mason Ng, Chin-ping Hu +23

The soft gamma-ray repeater Swift J1555.2-5402 was discovered by means of a 12-ms duration short burst detected with Swift BAT on 2021 June 3. Then 1.6 hours after the first burst…

astro-ph.HE2021★ 2 cited

On the impact of an intermediate duration X-ray burst on the accretion environment in IGR J17062-6143

Peter Bult, Diego Altamirano, Zaven Arzoumanian +10

We report on a spectroscopic analysis of the X-ray emission from IGR J17062-6143 in the aftermath of its June 2020 intermediate duration Type I X-ray burst. Using the Neutron Star…

astro-ph.HE2021★ 27 cited

Swift/UVOT follow-up of Gravitational Wave Alerts in the O3 era

S. R. Oates, F. E. Marshall, A. A. Breeveld +41

In this paper, we report on the observational performance of the Swift Ultra-violet/Optical Telescope (UVOT) in response to the Gravitational Wave alerts announced by the Advanced…