Articles by Stefanie Komossa

Claim page

Stefanie Komossa

Activity

Upvotes

Folders

Articles

160

The extremes of AGN variability: outbursts, deep fades, changing looks, exceptional spectral states, and semi-periodicities

31 July 2024 by Stefanie Komossa and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

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

First deep X-ray observations of the Fermi-detected steep-spectrum source and radio-loud NLS1 galaxy 3C 286

26 July 2024 by Su Yao and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

The transient event in NGC 1566 from 2017 to 2019 -- I. An eccentric accretion disk and a turbulent, disk-dominated broad-line region unveiled by double-peaked Ca II and O I lines

24 July 2024 by M. Ochmann and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

On the nature of the radio calibrator and gamma-ray emitting NLS1 galaxy 3C 286 and its multiwavelength variability

12 June 2024 by Stefanie Komossa and others

High Energy Astrophysical Phenomena

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

14 May 2024 by Margaret Buhariwalla and others

High Energy Astrophysical Phenomena

Investigating the {Origin} of the Absorption-Line Variability in Narrow-Line Seyfert 1 Galaxy WPVS 007

9 May 2024 by Kaylie Green and others at

University of Western Ontario

Astrophysics of Galaxies

The calm before the (next) storm: no third outburst in 2019--2020, and ongoing monitoring of the transient AGN IC 3599

29 April 2024 by Dirk Grupe and others at

Northern Kentucky University

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

Changing-look NLS1 galaxies, their detection with SVOM, and the case of NGC 1566

19 January 2024 by D. Xu and others at

ASTRON

Astrophysics of Galaxies, High Energy Astrophysical Phenomena

Multiwavelength variability of γ-ray emitting narrow-line Seyfert 1 galaxies

30 May 2023 by Su Yao and Stefanie Komossa

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

Absence of the predicted 2022 October outburst of OJ 287 and implications for binary SMBH scenarios

22 February 2023 by Stefanie Komossa and others at

ASTRON

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

MOMO VI: Multifrequency radio variability of the blazar OJ 287 from 2015-2022, absence of predicted 2021 precursor-flare activity, and a new binary interpretation of the 2016/2017 outburst

22 February 2023 by Stefanie Komossa and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

UV/Optical disk reverberation lags despite a faint X-ray corona in the AGN Mrk 335

14 February 2023 by Erin Kara and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

The Collisional and Photoionized Plasma in the Polarized NLS1 galaxy Mrk 1239

16 January 2023 by Margaret Buhariwalla and others at

Saint Mary's University

High Energy Astrophysical Phenomena

Extreme Accretion Events: TDEs and Changing-Look AGN

20 December 2022 by Stefanie Komossa and Dirk Grupe

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

The outburst of the changing-look AGN IRAS23226-3843 in 2019

14 December 2022 by Wolfram Kollatschny and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

The X-ray view of optically selected dual AGN

12 December 2022 by Alessandra Rosa and others

Astrophysics of Galaxies, High Energy Astrophysical Phenomena

Refining the prediction for OJ 287 next impact flare arrival epoch

17 September 2022 by Mauri Valtonen and others

High Energy Astrophysical Phenomena

Multiwavelength astrophysics of the blazar OJ 287 and the project MOMO

22 July 2022 by Stefanie Komossa and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

Host galaxy magnitude of OJ 287 from its colours at minimum light

31 May 2022 by Mauri Valtonen and others

Astrophysics of Galaxies, High Energy Astrophysical Phenomena

Unravelling the Innermost Jet Structure of OJ 287 with the First GMVA+ALMA Observations

1 May 2022 by Guang-Yao Zhao and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

MOMO V. Effelsberg, Swift and Fermi study of the blazar and supermassive binary black hole candidate OJ 287 in a period of high activity

21 April 2022 by Stefanie Komossa and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

A new X-ray tidal disruption event candidate with fast variability

22 February 2022 by J. Hampel and others at

ASTRON

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

Promise of persistent multi-messenger astronomy with the blazar OJ 287

22 December 2021 by Mauri Valtonen and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

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

21 December 2021 by Dacheng Lin and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

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

9 December 2021 by Stefanie Komossa and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

Hunting for the nature of the enigmatic narrow-line Seyfert 1 galaxy PKS 2004-447

30 July 2021 by Mateo Berton and others

High Energy Astrophysical Phenomena

Reverberation in tidal disruption events: dust echoes, coronal emission lines, multi-wavelength cross-correlations, and QPOs

26 July 2021 by Sjoert Van Velzen and others

High Energy Astrophysical Phenomena

A systematic study of photoionized emission and warm absorption signatures of the NLS1 Mrk 335

14 July 2021 by Hao Líu and others

High Energy Astrophysical Phenomena

Project MOMO: Multiwavelength Observations and Modelling of OJ 287

30 June 2021 by Stefanie Komossa and others

High Energy Astrophysical Phenomena, Astrophysics of Galaxies

This is an AI-generated summary

Key points

Topics

High Energy Astrophysical Phenomena Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology Instrumentation and Methods for Astrophysics astro-ph Data Analysis, Statistics and Probability Solar and Stellar Astrophysics High Energy Physics Space Physics