DG
D. Grupe
astro-ph.HEastro-ph.GAastro-phastro-ph.COastro-ph.SR
On Valency
published · living versionsW_x5umjrw3·v1 · currentpublished
ASASSN-15lh: A Highly Super-Luminous Supernova
with Subo Dong, B. J. Shappee, J. L. Prieto, S. W. Jha +25
1 version
W_g84fgrnm·v1published
Preprints & journals
170 papers in the corpus · 1997–2026In the Eye of the Storm: The Third Giant X-ray Outburst of the Extreme Changing-look AGN IC 35992607.09036v1 · D. Grupe, S. Komossa, W. Zheng et al.2026 · 0 citationsarXiv
SDSSJ110546.07+145202.4: The first long-duration radio changing-look NLS1 galaxy2604.19435v1 · S. Komossa, D. Grupe, A. Kraus et al.2026 · 0 citationsarXiv
Variability of the X-ray obscuring wind in Mrk 335 with XMM-Newton/RGS2602.23255v2 · Daniele Rogantini, Erin Kara, Luigi Gallo et al.2026 · 0 citationsarXiv
Extreme line profile variations in the repeating changing-look active galactic nucleus IRAS23226-38432601.15979v1 · Wolfram Kollatschny, Dirk Grupe, Hartmut Winkler et al.2026 · 3 citationsarXiv
SVOM discovery of a strong X-ray outburst of the blazar 1ES~1959+650 and multi-wavelength follow-up with the Neil Gehrels Swift observatory2601.15994v1 · A. Foisseau, A. Coleiro, S. Komossa et al.2026 · 2 citationsarXiv
Narrow-Line Seyfert 1 Galaxies Beyond the Local X-ray Universe: An X-ray spectral sample2503.23849v1 · Jiachen Jiang, Dominic J. Walton, Luigi C. Gallo et al.2025 · 2 citationsarXiv
Double-peaked Ca II traces a relativistic broad-line region disk in NGC 45932503.21994v2 · M.W. Ochmann, P.M. Weilbacher, M.A. Probst et al.2025 · 3 citationsA&A 697, L5 (2025)
First deep X-ray observations of the Fermi-detected steep-spectrum source and radio-loud NLS1 galaxy 3C 2862407.18475v1 · Su Yao, S. Komossa, A. Kraus et al.2024 · 1 citationarXiv
On the nature of the radio calibrator and gamma-ray emitting NLS1 galaxy 3C 286 and its multiwavelength variability2406.08312v1 · S. Komossa, S. Yao, D. Grupe et al.2024 · 2 citationsarXiv
A Hot Mess: The Rich and Complex Soft Emitting Regions Surrounding the Reflection Dominated Flaring Central Engine of Mrk 12392405.08785v1 · Margaret Z. Buhariwalla, L. C. Gallo, J. Mao et al.2024 · 5 citationsarXiv
Investigating the Origin of the Absorption-Line Variability in Narrow-Line Seyfert 1 Galaxy WPVS 0072405.06027v1 · Kaylie S. Green, Sarah C. Gallagher, Karen M. Leighly et al.2024 · 13 citations2023, ApJ, 953, 186
The calm before the (next) storm: no third outburst in 2019--2020, and ongoing monitoring of the transient AGN IC 35992404.19107v1 · Dirk Grupe, S. Komossa, Salem Wolsing2024 · 7 citationsarXiv
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 lines2402.12054v3 · M.W. Ochmann, W. Kollatschny, M.A. Probst et al.2024 · 19 citationsA&A 686, A17 (2024)
Changing-look NLS1 galaxies, their detection with SVOM, and the case of NGC 15662401.10600v1 · D. W. Xu, S. Komossa, D. Grupe et al.2024 · 1 citationarXiv
TIC 378898110: A Bright, Short-Period AM CVn Binary in TESS2311.01255v1 · Matthew J. Green, J. J. Hermes, Brad N. Barlow et al.2023 · 6 citationsarXiv
AMUSE-antlia I: Nuclear X-ray properties of early-type galaxies in a dynamically young galaxy cluster2308.12565v1 · Zhensong Hu, Yuanyuan Su, Zhiyuan Li et al.2023 · 3 citationsarXiv
An XMM-Newton Study of Six Narrow-Line Seyfert 1 Galaxies at z = 0.35--0.922305.00991v1 · Zhibo Yu, Jiachen Jiang, Cosimo Bambi et al.2023 · 9 citationsMonthly Notices of the Royal Astronomical Society, Volume 522, Issue 4, July 2023, Pages 5456-5468
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 outburst2302.11486v1 · S. Komossa, A. Kraus, D. Grupe et al.2023 · 26 citationsarXiv
Absence of the predicted 2022 October outburst of OJ 287 and implications for binary SMBH scenarios2302.11646v1 · S. Komossa, D. Grupe, A. Kraus et al.2023 · 36 citationsarXiv
UV/Optical disk reverberation lags despite a faint X-ray corona in the AGN Mrk 3352302.07342v1 · Erin Kara, Aaron J. Barth, Edward M. Cackett et al.2023 · 41 citationsarXiv
The Collisional and Photoionized Plasma in the Polarized NLS1 galaxy Mrk 12392301.06559v1 · Margaret Z. Buhariwalla, Luigi C. Gallo, J. Mao et al.2023 · 8 citationsarXiv
Extreme Accretion Events: TDEs and Changing-Look AGN2212.10331v1 · S. Komossa, D. Grupe2022 · 15 citationsarXiv
The outburst of the changing-look AGN IRAS23226-3843 in 20192212.07270v1 · Wolfram Kollatschny, Dirk Grupe, Michael L. Parker et al.2022 · 17 citationsA&A 670, A103 (2023)
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 disk2211.14371v2 · Daniel Lawther, Marianne Vestergaard, Sandra Raimundo et al.2022 · 18 citationsarXiv
Refining the prediction for OJ 287 next impact flare arrival epoch2209.08360v1 · Mauri J. Valtonen, Staszek Zola, A. Gopakumar et al.2022 · 3 citationsarXiv
Comparing Reflection and Absorption Models for the Soft X-ray Variability in the NLS1 AGN UGC 117632208.12177v1 · Jiachen Jiang, Luigi C. Gallo, Dirk Grupe et al.2022 · 3 citationsarXiv
Multiwavelength astrophysics of the blazar OJ 287 and the project MOMO2207.11291v1 · S. Komossa, A. Kraus, D. Grupe et al.2022 · 1 citationarXiv
Collimation of the kiloparsec-scale radio jets in NGC 26632207.06713v2 · Velibor Velovi'c, M. D. Filipovi'c, L. Barnes et al.2022 · 9 citationsarXiv
Host galaxy magnitude of OJ 287 from its colours at minimum light2205.15589v1 · Mauri J. Valtonen, Lankeswar Dey, S. Zola et al.2022 · 5 citationsarXiv
An X-ray View of the Ambiguous Nuclear Transient AT2019pev2205.05097v1 · Zhefu Yu, C. S. Kochanek, S. Mathur et al.2022 · 5 citationsarXiv
MOMO V. Effelsberg, Swift and Fermi study of the blazar and supermassive binary black hole candidate OJ 287 in a period of high activity2204.10244v1 · S. Komossa, D. Grupe, A. Kraus et al.2022 · 15 citationsarXiv
Follow-up Observations of the Prolonged, super-Eddington, Tidal Disruption Event Candidate 3XMM~J150052.0+015452: the Slow Decline Continues2112.11545v1 · Dacheng Lin, Olivier Godet, Natalie A. Webb et al.2021 · 14 citationsarXiv
MOMO IV: The complete Swift X-ray and UV/optical light curve and characteristic variability of the blazar OJ 287 during the last two decades2112.05067v1 · S. Komossa, D. Grupe, L.C. Gallo et al.2021 · 22 citationsApJ 923, 51, 2021
The Eddington ratio-dependent changing look events in NGC 29922109.06914v1 · Muryel Guolo, Daniel Ruschel-Dutra, Dirk Grupe et al.2021 · 33 citationsarXiv
A systematic study of photoionized emission and warm absorption signatures of the NLS1 Mrk 3352107.06851v1 · H. Liu, M. L. Parker, J. Jiang et al.2021 · 9 citationsMNRAS, 506, 5190-5200 (2021)
Project MOMO: Multiwavelength Observations and Modelling of OJ 2872107.00083v1 · S. Komossa, D. Grupe, A. Kraus et al.2021 · 0 citationsarXiv
X-ray spectral components of the blazar and binary black hole candidate OJ 287 (2005-2020)2105.01479v1 · S. Komossa, D. Grupe, M.L. Parker et al.2021 · 39 citationsarXiv
Supermassive binary black holes and the case of OJ 2872104.12901v1 · S. Komossa, S. Ciprini, L. Dey et al.2021 · 9 citationsarXiv
Lifting the curtain: The Seyfert galaxy Mrk 335 emerges from deep low-state in a sequence of rapid flare events2011.04996v1 · S. Komossa, D. Grupe, L.C. Gallo et al.2020 · 27 citationsarXiv
Tracking the year-to-year variation in the spectral energy distribution of the Narrow-line Seyfert 1 Galaxy Mrk3352009.05705v1 · S. Tripathi, K. M. McGrath, L. C. Gallo et al.2020 · 22 citationsarXiv
Intensive disc-reverberation mapping of Fairall 9: 1st year of Swift & LCO monitoring2008.02134v1 · J. V. Hern'andez Santisteban, R. Edelson, K. Horne et al.2020 · 105 citationsarXiv
The April-June 2020 super-outburst of OJ 287 and its long-term multiwavelength light curve with Swift: binary supermassive black hole and jet activity2008.01826v1 · S. Komossa, D. Grupe, M.L. Parker et al.2020 · 0 citationsarXiv
ASASSN-18am/SN 2018gk : An overluminous Type IIb supernova from a massive progenitor2007.00008v2 · Subhash Bose, Subo Dong, C. S. Kochanek et al.2020 · 14 citationsarXiv
The nuclear environment of the NLS1 Mrk 335: obscuration of the X-ray line emission by a variable outflow1909.04924v1 · M. L. Parker, A. L. Longinotti, N. Schartel et al.2019 · 53 citationsarXiv
Swift, NuStar and XMM-Newton observations of the NLS1 galaxy RX J2317.8-4422 in an extreme X-ray low flux state1903.07689v1 · Dirk Grupe, S. Komossa., Luigi Gallo et al.2019 · 2 citationsarXiv
Evidence for an emerging disc wind and collimated outflow during an X-ray flare in the narrow-line Seyfert 1 galaxy Mrk 3351901.07899v1 · L. C. Gallo, A. G. Gonzalez, S. G. H. Waddell et al.2019 · 49 citationsarXiv
X-ray spectra reveal the reawakening of the repeat changing-look AGN NGC 15661811.10289v1 · M. L. Parker, N. Schartel, D. Grupe et al.2018 · 70 citationsarXiv
The First Swift Intensive AGN Accretion Disk Reverberation Mapping Survey1811.07956v2 · R. Edelson, J. Gelbord, E. Cackett et al.2018 · 196 citationsApJ 870 123 (2019)
High cadence, linear and circular polarization monitoring of OJ 287 - Helical magnetic field in a bent jet1809.01663v1 · I. Myserlis, S. Komossa, E. Angelakis et al.2018 · 25 citationsA&A 619, A88 (2018)
Broad-line region structure and line profile variations in the changing look AGN HE1136-23041808.07331v2 · W. Kollatschny, M. W. Ochmann, M. Zetzl et al.2018 · 31 citationsA&A 619, A168 (2018)
Career total: at least 708 works. 170 are in this corpus.Showing the 50 most recent.
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