List of works - Daryl Haggard

2014 Chandra X-ray Monitoring of Sgr A*/G2 and SGR J1745-29

scientific article published in January 2014

A 3 pc SCALE JET-DRIVEN OUTFLOW FROM SGR A* ⬇️

scholarly article

A Chandra study of the Galactic globular cluster omega Centauri ⬇️

scientific article published in January 2009

A Chandra/HETGS census of X-ray variability from Sgr A* during 2012 ⬇️

scientific article published in the Astrophysical Journal

A Comparison of Two Methods for Estimating Black Hole Spin in Active Galactic Nuclei ⬇️

article

A Deep Chandra X-Ray Study of Neutron Star Coalescence GW170817 ⬇️

A Deep X-ray Survey of the globular cluster Omega Centauri

scientific article published in January 2018

A Large, Uniform Sample of X-Ray-emitting Active Galactic Nuclei from theROSATAll Sky and Sloan Digital Sky Surveys: The Data Release 5 Sample

scientific article published in Astronomical Journal

A Search for a Radio Counterpart to Swift J174540.7-290015

scientific article published in January 2016

A Universal Power-law Prescription for Variability from Synthetic Images of Black Hole Accretion Flows

scientific article published in May 2022

A deep Chandra X-ray limit on the putative IMBH in omega Centauri ⬇️

A full year's Chandra exposure on Sloan Digital Sky Survey quasars from the Chandra multiwavelength project ⬇️

scientific article published in the Astrophysical Journal

A high yield of new sightlines for the study of intergalactic helium: Far-UV-Bright quasars from the SDSS, GALEX, and HST ⬇️

scientific article published in the Astrophysical Journal

A powerful flare from Sgr A* confirms the synchrotron nature of the X-ray emission ⬇️

scientific article

A search for optical counterparts of Chandra sources in omega Centauri using ACS

scholarly article

A strongly magnetized pulsar within the grasp of the Milky Way's supermassive black hole ⬇️

scholarly article by Nanda Rea et al published 11 September 2013 in Letters of the Astrophysical Journal

Are blazars above the blazar sequence a significant source of IceCube neutrinos?

scientific article published in January 2022

Black hole goes with the flow

scientific article published on 01 January 2019

Brightening X-Ray Emission from GW170817/GRB 170817A: Further Evidence for an Outflow ⬇️

article

Brightening of the Magnetar SGR J1745-29 near Sgr A* at 44 GHz

scientific article published in January 2014

Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

scholarly article

Chandra Position of Galactic Center X-ray Transient Swift J174540.7-290015

scholarly article

Chandra Spectral and Timing Analysis of Sgr A*'s Brightest X-Ray Flares

scientific article published on 25 November 2019

Chandra X-ray observations of GW170817 at 1 year post-merger: increasingly rapid fading

scientific article published in January 2018

Chandra confirmation of transient X-ray activity from CXOGC J174540.0-290005 north of the Galactic Center

Chandra localization of the soft gamma repeater in the Galactic Center region

Chandra monitoring of the Galactic Centre magnetar SGR J1745−2900 during the initial 3.5 years of outburst decay

scientific article

Characterizing and Mitigating Intraday Variability: Reconstructing Source Structure in Accreting Black Holes with mm-VLBI

scientific article published in May 2022

Comparison of Polarized Radiative Transfer Codes Used by the EHT Collaboration

scientific article published in June 2023

Constraining particle acceleration in Sgr A ⋆ with simultaneous GRAVITY, Spitzer , NuSTAR , and Chandra observations

scientific article published in October 2021

Constraints on black-hole charges with the 2017 EHT observations of M87*

scientific article published on 20 May 2021

Continued Chandra monitoring observations of the Galactic Center magnetar

scientific article published in January 2014

Continued Swift/XRT monitoring observations of the Galactic center

scientific article published in January 2014

Continued Swift/XRT observations of the new Galactic center transients SWIFT J174540.2-290037 and SWIFT J174540.7-290015

scholarly article

Correction: LIGO/Virgo GW170817: A steep decline in the radio light curve and prediction for the X-rays

scientific article published in January 2018

Dissecting x-ray-emitting gas around the center of our galaxy

scientific article

ERRATUM: “A THREE PARSEC-SCALE JET-DRIVEN OUTFLOW FROM Sgr A*” (2012, ApJL, 758, L11) ⬇️

scholarly article published in Letters of the Astrophysical Journal

Empirical links between XRB and AGN accretion using the complete z < 0.4 spectroscopic CSC/SDSS catalog ⬇️

scientific article published in the Astrophysical Journal

Erratum: “Brightening X-Ray Emission from GW170817/GRB 170817A: Further Evidence for an Outflow” (2018, ApJL, 853, L4) ⬇️

article

Erratum: “Simultaneous X-Ray and Infrared Observations of Sagittarius A*'s Variability” (2019, ApJ, 871, 161)

correction of a scholarly article

Erratum: “The Chandra Multi-wavelength Project: Optical Spectroscopy and the Broadband Spectral Energy Distributions of X-ray-selected AGNs” (2012, ApJS, 200, 17)

scholarly article published in The Astrophysical Journal Supplement Series

Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution

scientific article published in August 2020

Event Horizon Telescope observations of the jet launching and collimation in Centaurus A

scientific article published on 19 July 2021

Fading of the X-Ray Afterglow of Neutron Star Merger GW170817/GRB 170817A at 260 Days ⬇️

scientific article published on 31 July 2018

Fifteen years ofXMM–NewtonandChandramonitoring of Sgr A★: evidence for a recent increase in the bright flaring rate ⬇️

scholarly article

First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole ⬇️

scientific article published on 10 April 2019

First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring ⬇️

scientific article published on 10 April 2019

First M87 Event Horizon Telescope Results. VII. Polarization of the Ring

scientific article published in March 2021

First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon

scientific article published in March 2021

First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

scientific article published in May 2022

First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multiwavelength Observations, Data Processing, and Calibration

scientific article published in May 2022

First Sagittarius A* Event Horizon Telescope Results. III. Imaging of the Galactic Center Supermassive Black Hole

scientific article published in May 2022

First Sagittarius A* Event Horizon Telescope Results. IV. Variability, Morphology, and Black Hole Mass

scientific article published in May 2022

First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole

scientific article published in May 2022

First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric

scientific article published in May 2022

Gemini Imaging of the Host Galaxies of Changing-look Quasars

HST/ACS imaging of omega Centauri: optical counterparts of Chandra X-ray sources ⬇️

scientific article published in January 2013

Hubble Space TelescopeAdvanced Camera for Surveys Imaging of ω Centauri: Optical Counterpart for the Quiescent Low‐Mass X‐Ray Binary ⬇️

scientific article published in the Astrophysical Journal

Hubble space telescope spectral observations near the He II Ly{alpha} break: implications for He II reionization ⬇️

scientific article published in the Astrophysical Journal

Improved mass and radius constraints for quiescent neutron stars in ω Cen and NGC 6397 ⬇️

scientific article

LIGO/Virgo G298048: Brightening X-ray Emission from GW170817/GRB170817A/SSS17a

scientific article

LIGO/Virgo GW170817: Brightening X-ray Emission from GW170817/GRB170817A/SSS17a

scientific article published in January 2017

LIGO/Virgo GW170817: Chandra X-ray Emission Continues to Rise ~156 Days Post-Merger

LIGO/Virgo S190510g: SOAR/Goodman follow-up observations

Millimeter Light Curves of Sagittarius A* Observed during the 2017 Event Horizon Telescope Campaign

scientific article published in May 2022

Multiwavelength Light Curves of Two Remarkable Sagittarius A* Flares

scientific article published in the Astrophysical Journal

Multiwavelength Variability of Sagittarius A* in 2019 July

scientific article published in May 2022

No sustained enhancement of the X-ray emission at the Galactic center

scientific article published in January 2014

On the Fe K absorption – accretion state connection in the Galactic Centre neutron star X-ray binary AX J1745.6-2901 ⬇️

scientific article

On the Origin of Sub-subgiant Stars. I. Demographics

scientific article published in the Astrophysical Journal

Polarimetric Properties of Event Horizon Telescope Targets from ALMA

scientific article published in March 2021

Probing the balance of AGN and star-forming activity in the local universe with ChaMP ⬇️

scientific article published in the Astrophysical Journal

Progress in studies of intergalactic He II absorption

Prospects for fundamental physics with LISA

scientific article published in August 2020

Rapid Variability of Sgr A* across the Electromagnetic Spectrum

scientific article published in August 2021

Resolving the Inner Parsec of the Blazar J1924–2914 with the Event Horizon Telescope

scientific article published in 2022

SDSS spectroscopic survey of stars

scientific article

SNEWS 2.0: a next-generation supernova early warning system for multi-messenger astronomy

scientific article published in March 2021

STROBE-X: X-ray Timing and Spectroscopy on Dynamical Timescales from Microseconds to Years

scholarly article published in March 2019

Selective Dynamical Imaging of Interferometric Data

scientific article published in May 2022

Simultaneous Monitoring of X-Ray and Radio Variability in Sagittarius A*

scientific article published in the Astrophysical Journal

Simultaneous X-Ray and Infrared Observations of Sagittarius A*'s Variability

scientific article published on 29 January 2019

Simultaneous multi-band radio and X-ray observations of the Galactic Center magnetar Sgr 1745-2900 ⬇️

scientific article published in the Astrophysical Journal

SpIES: THESPITZERIRAC EQUATORIAL SURVEY ⬇️

article

Spectroscopic r-process Abundance Retrieval for Kilonovae. II. Lanthanides in the Inferred Abundance Patterns of Multicomponent Ejecta from the GW170817 Kilonova

scholarly article

Stellar SEDs from 0.3 to 2.5 μm: Tracing the Stellar Locus and Searching for Color Outliers in the SDSS and 2MASS

scientific article published in Astronomical Journal

Swift/XRT detection of another active X-ray transient close to Sgr A*

scientific article published in January 2016

Swift/XRT detects renewed activity of the Galactic center transient GRS 1741-2853

scientific article published in January 2016

Swift/XRT observations of the Galactic center have resumed

scientific article published in January 2014

Ten more new sightlines for the study of intergalactic helium, and hundreds of Far-Ultraviolet-Bright quasars, from the Sloan Digital Sky Survey, galaxy evolution explorer, and Hubble Space Telescope

scientific article

The 2013 outburst of a transient very faint X-ray binary, 23 arcsec from Sgr A* ⬇️

scientific article

The 3 Ms Chandra campaign on Sgr A*: a census of X-ray flaring activity from the Galactic center

The ChaMP Extended Stellar Survey (ChESS): Photometric and Spectroscopic Properties of Serendipitously Detected Stellar X‐Ray Sources

The Chandra multi-wavelength project: optical spectroscopy and the broadband spectral energy distributions of X-ray-selected AGNs

scholarly article

The Event Horizon Telescope Image of the Quasar NRAO 530

scientific article published in February 2023

The Future of X-Ray Time-Domain Surveys

scientific article published in September 2011

The Milky Way Tomography with SDSS. II. Stellar Metallicity ⬇️

scientific article published in the Astrophysical Journal

The Milky Way tomography with SDSS. III. Stellar kinematics ⬇️

scientific article published in the Astrophysical Journal

The Polarized Image of a Synchrotron-emitting Ring of Gas Orbiting a Black Hole

scientific article published in May 2021

The Ultraviolet, Optical, and Infrared Properties of Sloan Digital Sky Survey Sources Detected by GALEX

scientific article published in Astronomical Journal

The Variability of the Black Hole Image in M87 at the Dynamical Timescale

scientific article published in January 2022

The X-ray flux distribution of Sagittarius A* as seen by Chandra ⬇️

scientific article published in the Astrophysical Journal

The X-ray outburst of the Galactic Centre magnetar SGR J1745−2900 during the first 1.5 year ⬇️

scientific article

The X-ray outburst of the Galactic Centre magnetar as monitored by Chandra and XMM-Newton

The baryon oscillation spectroscopic survey of SDSS-III

scientific article published in Astronomical Journal

The field X-ray AGN fraction to z = 0.7 from the Chandra multiwavelength project and the Sloan Digital Sky Survey ⬇️

scientific article published in the Astrophysical Journal

The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey

scientific article published in November 2012

The peculiar Galactic Center neutron star X-ray binary XMM J174457-2850.3 ⬇️

scientific article published in the Astrophysical Journal

TheChandraDust-scattering Halo of Galactic Center Transient Swift J174540.7–290015 ⬇️

scientific article published in the Astrophysical Journal

Two more candidate AM Canum Venaticorum (AM CVn) binaries from the Sloan Digital Sky Survey

article by Anderson S. F. et al published 2008 in The Astronomical Journal

Ultracompact AM Canum Venaticorum binaries from the Sloan Digital Sky Survey: three candidates plus the first confirmed eclipsing system

article by Anderson S. F. et al published 2005 in The Astronomical Journal

Variability Timescale and Spectral Index of Sgr A* in the Near Infrared: Approximate Bayesian Computation Analysis of the Variability of the Closest Supermassive Black Hole

scientific article published in the Astrophysical Journal

WISDOM project – XI. Star formation efficiency in the bulge of the AGN-host Galaxy NGC 3169 with SITELLE and ALMA

scientific article published in 2022

XIPE: the x-ray imaging polarimetry explorer

article

List of works by Daryl Haggard

2014 Chandra X-ray Monitoring of Sgr A*/G2 and SGR J1745-29

A 3 pc SCALE JET-DRIVEN OUTFLOW FROM SGR A* ⬇️

A Chandra study of the Galactic globular cluster omega Centauri ⬇️

A Chandra/HETGS census of X-ray variability from Sgr A* during 2012 ⬇️

A Comparison of Two Methods for Estimating Black Hole Spin in Active Galactic Nuclei ⬇️

A Deep Chandra X-Ray Study of Neutron Star Coalescence GW170817 ⬇️

A Deep X-ray Survey of the globular cluster Omega Centauri

A Large, Uniform Sample of X-Ray-emitting Active Galactic Nuclei from theROSATAll Sky and Sloan Digital Sky Surveys: The Data Release 5 Sample

A Search for a Radio Counterpart to Swift J174540.7-290015

A Universal Power-law Prescription for Variability from Synthetic Images of Black Hole Accretion Flows

A deep Chandra X-ray limit on the putative IMBH in omega Centauri ⬇️

A full year's Chandra exposure on Sloan Digital Sky Survey quasars from the Chandra multiwavelength project ⬇️

A high yield of new sightlines for the study of intergalactic helium: Far-UV-Bright quasars from the SDSS, GALEX, and HST ⬇️

A powerful flare from Sgr A* confirms the synchrotron nature of the X-ray emission ⬇️

A search for optical counterparts of Chandra sources in omega Centauri using ACS

A strongly magnetized pulsar within the grasp of the Milky Way's supermassive black hole ⬇️

Are blazars above the blazar sequence a significant source of IceCube neutrinos?

Black hole goes with the flow

Brightening X-Ray Emission from GW170817/GRB 170817A: Further Evidence for an Outflow ⬇️

Brightening of the Magnetar SGR J1745-29 near Sgr A* at 44 GHz

Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

Chandra Position of Galactic Center X-ray Transient Swift J174540.7-290015

Chandra Spectral and Timing Analysis of Sgr A*'s Brightest X-Ray Flares

Chandra X-ray observations of GW170817 at 1 year post-merger: increasingly rapid fading

Chandra confirmation of transient X-ray activity from CXOGC J174540.0-290005 north of the Galactic Center

Chandra localization of the soft gamma repeater in the Galactic Center region

Chandra monitoring of the Galactic Centre magnetar SGR J1745−2900 during the initial 3.5 years of outburst decay

Characterizing and Mitigating Intraday Variability: Reconstructing Source Structure in Accreting Black Holes with mm-VLBI

Comparison of Polarized Radiative Transfer Codes Used by the EHT Collaboration

Constraining particle acceleration in Sgr A ⋆ with simultaneous GRAVITY, Spitzer , NuSTAR , and Chandra observations

Constraints on black-hole charges with the 2017 EHT observations of M87*

Continued Chandra monitoring observations of the Galactic Center magnetar

Continued Swift/XRT monitoring observations of the Galactic center

Continued Swift/XRT observations of the new Galactic center transients SWIFT J174540.2-290037 and SWIFT J174540.7-290015

Correction: LIGO/Virgo GW170817: A steep decline in the radio light curve and prediction for the X-rays

Dissecting x-ray-emitting gas around the center of our galaxy

ERRATUM: “A THREE PARSEC-SCALE JET-DRIVEN OUTFLOW FROM Sgr A*” (2012, ApJL, 758, L11) ⬇️

Empirical links between XRB and AGN accretion using the complete z < 0.4 spectroscopic CSC/SDSS catalog ⬇️

Erratum: “Brightening X-Ray Emission from GW170817/GRB 170817A: Further Evidence for an Outflow” (2018, ApJL, 853, L4) ⬇️

Erratum: “Simultaneous X-Ray and Infrared Observations of Sagittarius A*'s Variability” (2019, ApJ, 871, 161)

Erratum: “The Chandra Multi-wavelength Project: Optical Spectroscopy and the Broadband Spectral Energy Distributions of X-ray-selected AGNs” (2012, ApJS, 200, 17)

Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution

Event Horizon Telescope observations of the jet launching and collimation in Centaurus A

Fading of the X-Ray Afterglow of Neutron Star Merger GW170817/GRB 170817A at 260 Days ⬇️

Fifteen years ofXMM–NewtonandChandramonitoring of Sgr A★: evidence for a recent increase in the bright flaring rate ⬇️

First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole ⬇️

First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring ⬇️

First M87 Event Horizon Telescope Results. VII. Polarization of the Ring

First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon

First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

First Sagittarius A* Event Horizon Telescope Results. II. EHT and Multiwavelength Observations, Data Processing, and Calibration

First Sagittarius A* Event Horizon Telescope Results. III. Imaging of the Galactic Center Supermassive Black Hole

First Sagittarius A* Event Horizon Telescope Results. IV. Variability, Morphology, and Black Hole Mass

First Sagittarius A* Event Horizon Telescope Results. V. Testing Astrophysical Models of the Galactic Center Black Hole

First Sagittarius A* Event Horizon Telescope Results. VI. Testing the Black Hole Metric

Gemini Imaging of the Host Galaxies of Changing-look Quasars

HST/ACS imaging of omega Centauri: optical counterparts of Chandra X-ray sources ⬇️

Hubble Space TelescopeAdvanced Camera for Surveys Imaging of ω Centauri: Optical Counterpart for the Quiescent Low‐Mass X‐Ray Binary ⬇️

Hubble space telescope spectral observations near the He II Ly{alpha} break: implications for He II reionization ⬇️

Improved mass and radius constraints for quiescent neutron stars in ω Cen and NGC 6397 ⬇️

LIGO/Virgo G298048: Brightening X-ray Emission from GW170817/GRB170817A/SSS17a

LIGO/Virgo GW170817: Brightening X-ray Emission from GW170817/GRB170817A/SSS17a

LIGO/Virgo GW170817: Chandra X-ray Emission Continues to Rise ~156 Days Post-Merger

LIGO/Virgo GW170817: Chandra X-ray Emission Continues to Rise ~156 Days Post-Merger

LIGO/Virgo S190510g: SOAR/Goodman follow-up observations

Millimeter Light Curves of Sagittarius A* Observed during the 2017 Event Horizon Telescope Campaign

Multiwavelength Light Curves of Two Remarkable Sagittarius A* Flares

Multiwavelength Variability of Sagittarius A* in 2019 July

No sustained enhancement of the X-ray emission at the Galactic center

On the Fe K absorption – accretion state connection in the Galactic Centre neutron star X-ray binary AX J1745.6-2901 ⬇️

On the Origin of Sub-subgiant Stars. I. Demographics

Polarimetric Properties of Event Horizon Telescope Targets from ALMA

Probing the balance of AGN and star-forming activity in the local universe with ChaMP ⬇️

Progress in studies of intergalactic He II absorption

Prospects for fundamental physics with LISA

Rapid Variability of Sgr A* across the Electromagnetic Spectrum

Resolving the Inner Parsec of the Blazar J1924–2914 with the Event Horizon Telescope

SDSS spectroscopic survey of stars

SNEWS 2.0: a next-generation supernova early warning system for multi-messenger astronomy