Articles by K. D. Alexander

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K. D. Alexander

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Late-time X-ray Observations of the Jetted Tidal Disruption Event AT2022cmc: The Relativistic Jet Shuts Off

30 December 2024 by Tahereh Eftekhari and others at

ASTRON

High Energy Astrophysical Phenomena

A second radio flare from the tidal disruption event AT2020vwl: a delayed outflow ejection?

24 October 2024 by A. Goodwin and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

Quasi-periodic X-ray eruptions years after a nearby tidal disruption event

3 September 2024 by Matt Nicholl and others

High Energy Astrophysical Phenomena, Cosmology and Nongalactic Astrophysics

Eight Years of Light from ASASSN-15oi: Towards Understanding the Late-time Evolution of TDEs

26 July 2024 by Aprajita Hajela and others at

University of Copenhagen

High Energy Astrophysical Phenomena

Constraints on Relativistic Jets from the Fast X-ray Transient 210423 using Prompt Radio Follow-Up Observations

11 July 2024 by Dina Ibrahimzade and others

High Energy Astrophysical Phenomena

Time-varying double-peaked emission lines following the sudden ignition of the dormant galactic nucleus AT2017bcc

25 April 2024 by E. Ridley and others

High Energy Astrophysical Phenomena, Cosmology and Nongalactic Astrophysics

Optical polarization from colliding stellar stream shocks in a tidal disruption event

27 November 2023 by Ioannis Liodakis and others

High Energy Astrophysical Phenomena

Converging pathways direct synapse elimination through the homeodomain transcriptional regulator DVE-1

18 November 2023 by K. Alexander and others

Neuroscience

Luminous Radio Emission from the Superluminous Supernova 2017ens at 3.3 years after explosion

23 June 2023 by Raffaella Margutti and others

High Energy Astrophysical Phenomena, Solar and Stellar Astrophysics

A radio-emitting outflow produced by the tidal disruption event AT2020vwl

25 April 2023 by A. Goodwin and others

High Energy Astrophysical Phenomena

Repeating tidal disruptions in GSN 069: Long-term evolution and constraints on quasi-periodic eruptions' models

9 December 2022 by Giovanni Miniutti and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

Extragalactic Millimeter Transients in the Era of Next Generation CMB Surveys

11 September 2022 by Tahereh Eftekhari and others

High Energy Astrophysical Phenomena

A fast rising tidal disruption event from a candidate intermediate mass black hole

5 September 2022 by C. Angus and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

Radio Analysis of SN 2004C Reveals an Unusual CSM Density Profile as a Harbinger of Core Collapse

14 March 2022 by Lindsay Demarchi and others

High Energy Astrophysical Phenomena, Solar and Stellar Astrophysics

Evidence for X-ray Emission in Excess to the Jet Afterglow Decay 3.5 yrs After the Binary Neutron Star Merger GW 170817: A New Emission Component

5 March 2022 by Aprajita Hajela and others at

CFA

High Energy Astrophysical Phenomena

Late-Time Radio and Millimeter Observations of Superluminous Supernovae and Long Gamma Ray Bursts: Implications for Obscured Star Formation, Central Engines, and Fast Radio Bursts

22 December 2021 by Tahereh Eftekhari and others

High Energy Astrophysical Phenomena

A Late-Time Galaxy-Targeted Search for the Radio Counterpart of GW190814

16 September 2021 by K. Alexander and others at

ASTRON

High Energy Astrophysical Phenomena

Radio Observations of an Ordinary Outflow from the Tidal Disruption Event AT2019dsg

30 August 2021 by Y. Cendes and others

High Energy Astrophysical Phenomena

The Young Supernova Experiment: Survey Goals, Overview, and Operations

5 January 2021 by D. Jones and others

High Energy Astrophysical Phenomena, Instrumentation and Methods for Astrophysics

An outflow powers the optical rise of the nearby, fast-evolving tidal disruption event AT2019qiz

14 September 2020 by Matt Nicholl and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

The Broad-band Counterpart of the Short GRB 200522A at z=0.5536: A Luminous Kilonova or a Collimated Outflow with a Reverse Shock?

19 August 2020 by Wlliam Fong and others

High Energy Astrophysical Phenomena

Discovery of the optical afterglow and host galaxy of short GRB181123B at z =1.754: Implications for Delay Time Distributions

7 July 2020 by Kenny Paterson and others

High Energy Astrophysical Phenomena

A mildly relativistic outflow from the energetic, fast-rising blue optical transient CSS161010 in a dwarf galaxy

23 May 2020 by D. Coppejans and others

High Energy Astrophysical Phenomena

A Galaxy-Targeted Search for the Optical Counterpart of the Candidate NS-BH Merger S190814bv with Magellan

11 April 2020 by Silfrido Gómez and others

High Energy Astrophysical Phenomena

Two years of non-thermal emission from the binary neutron star merger GW170817: rapid fading of the jet afterglow and first constraints on the kilonova fastest ejecta

29 September 2019 by Aprajita Hajela and others at

CFA

High Energy Astrophysical Phenomena

XMMSL2 J144605.0+685735 : a slow tidal disruption event

20 September 2019 by R. Saxton and others at

Liverpool John Moores University

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

Nine-hour X-ray quasi-periodic eruptions from a low-mass black hole galactic nucleus

10 September 2019 by Giovanni Miniutti and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

The Optical Afterglow of GW170817: An Off-axis Structured Jet and Deep Constraints on a Globular Cluster Origin

21 August 2019 by Wen-Fai Fong and others

High Energy Astrophysical Phenomena

The tidal disruption event AT2017eqx: spectroscopic evolution from hydrogen rich to poor suggests an atmosphere and outflow

2 August 2019 by Matt Nicholl and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

BICEP2 / Keck Array IX: New Bounds on Anisotropies of CMB Polarization Rotation and Implications for Axion-Like Particles and Primordial Magnetic Fields

20 June 2019 by Keck Array and others at

ASTRON

Cosmology and Nongalactic Astrophysics, High Energy Physics

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High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics Astrophysics of Galaxies High Energy Physics Neuroscience General Relativity and Quantum Cosmology