Dirk Grupe

Associate Professor and Chair

Northern Kentucky University

United States

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About

Dirk Grupe serves as an Associate Professor and Chair at Northern Kentucky University, USA. His research primarily focuses on active galactic nuclei (AGN), with recent publications exploring topics such as broad-line regions, emission-line variability, and the dynamics of changing-look narrow-line Seyfert 1 galaxies. His work contributes significantly to the understanding of complex celestial phenomena and the behavior of astronomical entities across multiple wavelengths.

Articles (19)

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2025

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2024

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2024

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2023

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2022

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2021

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2021

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2020

Collaborators (10)

Sandra Raimundo

University of Southampton

UNITED KINGDOM

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Bradley Peterson

Professor Emeritus

Ohio State University

UNITED STATES

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Emilia Järvelä

Assistant Professor

Texas Tech University

UNITED STATES

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Sarah Gallagher

Professor

Western University

CANADA

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Luigi Gallo

Professor

Saint Mary's University

CANADA

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Mark Gurwell

Smithsonian Institution

UNITED STATES

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Dacheng Lin

Research Associate Professor

Northeastern University

UNITED STATES

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Donald Terndrup

Associate Professor

Ohio State University

UNITED STATES

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Jiachen Jiang

University of Cambridge

UNITED KINGDOM

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Marianne Vestergaard

Københavns Universitet

DENMARK

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Dirk Grupe

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Articles (19)

Double-peaked Ca II traces a relativistic broad-line region disk in NGC 4593

A Hot Mess: The Rich and Complex Soft Emitting Regions Surrounding the Reflection Dominated Flaring Central Engine of Mrk 1239

On the Nature of the Radio Calibrator and Gamma-Ray Emitting NLS1 Galaxy 3C 286 and Its Multiwavelength Variability

The Calm Before the (Next) Storm: No Third Outburst in 2019–2020, and Ongoing Monitoring of the Transient AGN IC 3599

The transient event in NGC 1566 from 2017 to 2019

Changing-Look Narrow-Line Seyfert 1 Galaxies, their Detection with SVOM, and the Case of NGC 1566

Changing-Look Narrow-Line Seyfert 1 Galaxies, their Detection with SVOM, and the Case of NGC 1566

The extremes of continuum and emission-line variability of AGN: Changing-look events and binary SMBHS

Investigating the Origin of the Absorption-line Variability in the Narrow-line Seyfert 1 Galaxy WPVS 007

MOMO. VI. Multifrequency Radio Variability of the Blazar OJ 287 from 2015 to 2022, Absence of Predicted 2021 Pecursor-flare Activity, and a New Binary Interpretation of the 2016/2017 Outburst

Extreme accretion events: TDEs and changing‐look AGN

Flares in the changing look AGN Mrk 590 – I. The UV response to X-ray outbursts suggests a more complex reprocessing geometry than a standard disc

Investigating the Origin of the Absorption-line Variability in the Narrow-line Seyfert 1 Galaxy WPVS 007

An X-ray view of the ambiguous nuclear transient AT2019pev

Follow-up Observations of the Prolonged, Super-Eddington, Tidal Disruption Event Candidate 3XMM J150052.0+015452: the Slow Decline Continues

MOMO. IV. The Complete Swift X-Ray and UV/Optical Light Curve and Characteristic Variability of the Blazar OJ 287 during the Last Two Decades

The Eddington ratio-dependent ‘changing look’ events in NGC 2992

Modeling the Multiwavelength Variability of Mrk 335 Using Gaussian Processes

Uncovering the Primary X-Ray Emission and Possible Starburst Component in the Polarized NLS1 Mrk 1239

Collaborators (10)

Sandra Raimundo

Bradley Peterson

Emilia Järvelä

Sarah Gallagher

Luigi Gallo

Mark Gurwell

Dacheng Lin

Donald Terndrup

Jiachen Jiang

Marianne Vestergaard

Make your next move.

Dirk Grupe

Research Interests

Explore related searches

Contact this professor

About

Articles (19)

Double-peaked Ca II traces a relativistic broad-line region disk in NGC 4593

A Hot Mess: The Rich and Complex Soft Emitting Regions Surrounding the Reflection Dominated Flaring Central Engine of Mrk 1239

On the Nature of the Radio Calibrator and Gamma-Ray Emitting NLS1 Galaxy 3C 286 and Its Multiwavelength Variability

The Calm Before the (Next) Storm: No Third Outburst in 2019–2020, and Ongoing Monitoring of the Transient AGN IC 3599

The transient event in NGC 1566 from 2017 to 2019

Changing-Look Narrow-Line Seyfert 1 Galaxies, their Detection with SVOM, and the Case of NGC 1566

Changing-Look Narrow-Line Seyfert 1 Galaxies, their Detection with SVOM, and the Case of NGC 1566

The extremes of continuum and emission-line variability of AGN: Changing-look events and binary SMBHS

Investigating the Origin of the Absorption-line Variability in the Narrow-line Seyfert 1 Galaxy WPVS 007

MOMO. VI. Multifrequency Radio Variability of the Blazar OJ 287 from 2015 to 2022, Absence of Predicted 2021 Pecursor-flare Activity, and a New Binary Interpretation of the 2016/2017 Outburst

Extreme accretion events: TDEs and changing‐look AGN

Flares in the changing look AGN Mrk 590 – I. The UV response to X-ray outbursts suggests a more complex reprocessing geometry than a standard disc

Investigating the Origin of the Absorption-line Variability in the Narrow-line Seyfert 1 Galaxy WPVS 007

An X-ray view of the ambiguous nuclear transient AT2019pev

Follow-up Observations of the Prolonged, Super-Eddington, Tidal Disruption Event Candidate 3XMM J150052.0+015452: the Slow Decline Continues

MOMO. IV. The Complete Swift X-Ray and UV/Optical Light Curve and Characteristic Variability of the Blazar OJ 287 during the Last Two Decades

The Eddington ratio-dependent ‘changing look’ events in NGC 2992

Modeling the Multiwavelength Variability of Mrk 335 Using Gaussian Processes

Uncovering the Primary X-Ray Emission and Possible Starburst Component in the Polarized NLS1 Mrk 1239

Collaborators (10)

Sandra Raimundo

Bradley Peterson

Emilia Järvelä

Sarah Gallagher

Luigi Gallo

Mark Gurwell

Dacheng Lin

Donald Terndrup

Jiachen Jiang

Marianne Vestergaard

Make your next move.

Double-peaked Ca II traces a relativistic broad-line region disk in NGC 4593