Publications (118)
SDSS J211852.96-073227.5: a new γ-ray flaring narrow-line Seyfert 1 galaxy
Hui Yang, Weimin Yuan, Su Yao +6
X-ray spectra reveal the reawakening of the repeat changing-look AGN NGC 1566
M. L. Parker, N. Schartel, D. Grupe +6
The interacting late-type host galaxy of the radio-loud narrow-line Seyfert 1 IRAS 20181-2244
M. Berton, E. Congiu, S. Ciroi +15
On R-W1 as A Diagnostic to Discover Obscured Active Galactic Nuclei in Wide-Area X-ray Surveys
Stephanie M. LaMassa, Francesca Civano, Marcella Brusa +18
Properties of Warm absorbers in Narrow-Line Seyfert 1 galaxies
S. Komossa
Four dual AGN candidates observed with the VLBA
K. Ã. Gabányi, T. An, S. Frey +4
An Unobscured type II quasar candidate: SDSS J012032.19-005501.9
Y. Li, W. Yuan, H. Y. Zhou +4
Correlation Analysis of a Large Sample of Narrow-Line Seyfert 1 Galaxies: Linking Central Engine and Host Properties
Dawei Xu, S. Komossa, Hongyan Zhou +5
Spatially-resolved spectroscopy of narrow-line Seyfert 1 host galaxies
J. Scharwächter, B. Husemann, G. Busch +2
Unveiling multiple AGN activity in galaxy mergers
A. De Rosa, S. Bianchi, T. Bogdanovic +13
Extreme Gaseous Outflows in Radio-Loud Narrow-Line Seyfert 1 Galaxies
S. Komossa, D. W. Xu, A. Y. Wagner
Extreme Coronal Line Emitters: Tidal Disruption of Stars by Massive Black Holes in Galactic Nuclei?
Tinggui Wang, Hongyan Zhou, S. Komossa +3
Inner jet kinematics and the viewing angle towards the γ-ray narrow-line Seyfert 1 galaxy 1H 0323+342
L. Fuhrmann, V. Karamanavis, S. Komossa +9
Multiwavelength View of the Inner Spiral of NGC 1365
I. V. Strateva, S. Komossa
The radio loud narrow-line quasar SDSSJ172206.03+565451.6
S. Komossa, W. Voges, H. -M. Adorf +3
Total eclipse of the heart: The AM CVn Gaia14aae / ASSASN-14cn
H. C. Campbell, T. R. Marsh, M. Fraser +82
Demystifying the coronal line region of active galactic nuclei: spatially resolved spectroscopy with HST
Ximena Mazzalay, Alberto RodrÃguez-Ardila, S. Komossa
Broad Hbeta Emission-Line Variability in a Sample of 102 Local Active Galaxies
Jordan N. Runco, Maren Cosens, Vardha N. Bennert +7
Paving the way to simultaneous multi-wavelength astronomy
M. J. Middleton, P. Casella, P. Gandhi +49
IC 3599 did it again: A second outburst of the X-ray transient Seyfert 1.9 Galaxy
Dirk Grupe, S. Komossa, Richard Saxton
Swift J1644+5734: the EVN view
Z. Paragi, J. Yang, S. Komossa +5
The Simultaneous Optical-to-X-ray Spectral Energy Distribution of Soft X-ray Selected AGN observed by Swift
Dirk Grupe, S. Komossa, Karen M. Leighly +1
Optical polarisation variability of narrow line Seyfert 1 galaxies
E. Angelakis, S. Kiehlmann, I. Myserlis +6
LOFT as a discovery machine for jetted Tidal Disruption Events
E. M. Rossi, I. Donnarumma, R. Fender +5
A Population of Radio-loud Narrow Line Seyfert 1 Galaxies with Blazar-like Properties?
W. Yuan, H. Y. Zhou, S. Komossa +4
A milliparsec supermassive black hole binary candidate in the galaxy SDSS J120136.02+300305.5
F. K. Liu, Shuo Li, S. Komossa
Disclosing the properties of low-redshift dual AGN through XMM-Newton and SDSS spectroscopy
A. De Rosa, C. Vignali, B. Husemann +10
Tidal Disruption of Stars by Supermassive Black Holes -- XMM-Newton Highlights and the Next Decade
S. Komossa
A likely decade-long sustained tidal disruption event
Dacheng Lin, James Guillochon, S. Komossa +11
Searching for X-ray Galaxy Clusters in the Zone of Avoidance
H. Boehringer, P. Schuecker, S. Komossa +3
XMMSL1 J074008.2-853927: a tidal disruption event with thermal and non-thermal components
R. D. Saxton, A. M. Read, S. Komossa +3
NTT, Spitzer and Chandra spectroscopy of SDSSJ095209.56+214313.3: the most luminous coronal-line supernova ever observed, or a stellar tidal disruption event ?
S. Komossa, H. Zhou, A. Rau +9
Was the soft X-ray flare in NGC 3599 due to an AGN disc instability or a delayed tidal disruption event?
Richard D. Saxton, Sara E. Motta, S. Komossa +1
Seyfert galaxies with Swift: giant flares, rapid drops, and other surprises
S. Komossa, D. Grupe, R. Saxton +1
The quasar PG 0844+349 in an X-ray weak state
L. C. Gallo, D. Grupe, N. Schartel +4
Compact object mergers: Observations of supermassive binary black holes and stellar tidal disruption events
S. Komossa, J. A. Zensus
The NuSTAR spectrum of Mrk 335: Extreme relativistic effects within 2 gravitational radii of the event horizon?
M. L. Parker, D. R. Wilkins, A. C. Fabian +18
Radio-loud Narrow-Line Type 1 Quasars
S. Komossa, W. Voges, D. Xu +5
Unshifted Metastable He I* Mini-Broad Absorption Line System in the Narrow Line Type 1 Quasar SDSS J080248.18$+$551328.9
Tuo Ji, Hongyan Zhou, Peng Jiang +11
A remarkable long-term light curve, and deep, low-state spectroscopy: Swift & XMM-Newton monitoring of the NLS1 galaxy Mkn 335
D. Grupe, S. Komossa, L. C. Gallo +5
The XMM-Newton spectrum of a candidate recoiling supermassive black hole: an elusive inverted P-Cygni profile
G. Lanzuisi, F. Civano, S. Marchesi +12
Multi-Messenger Astrophysics with Pulsar Timing Arrays
Luke Zoltan Kelley, Maria Charisi, Sarah Burke-Spolaor +29
Tidal disruptions in circumbinary disks. II: Observational signatures in the reverberation spectra
Patrick Brem, Jorge Cuadra, Pau Amaro-Seoane +1
The Gamma-Ray Detected Narrow-Line Seyfert 1 Galaxy 1H 0323+342: Swift Monitoring and Suzaku Spectroscopy
Su Yao, Weimin Yuan, S. Komossa +3
Evidence for periodicity in 43 year-long monitoring of NGC 5548
E. Bon, S. Zucker, H. Netzer +14
Disk origin of broad optical emission lines of the TDE candidate PTF09djl
F. K. Liu, Z. Q. Zhou, R. Cao +2
Radio observations of the tidal disruption event XMMSL1 J0740$-$85
K. D. Alexander, M. H. Wieringa, E. Berger +2
Identification of a New $γ$-ray-emitting narrow-line Seyfert 1 Galaxy, at Redshift $\sim1$
Su Yao, Weimin Yuan, Hongyan Zhou +4
A sub-kpc-scale binary AGN with double narrow-line regions
Jong-Hak Woo, Hojin Cho, Bernd Husemann +3
Narrow double-peaked emission lines of SDSS J131642.90+175332.5: signature of a single or a binary AGN in a merger, jet-cloud interaction, or unusual narrow-line region geometry
Dawei Xu, S. Komossa
Studying the [OIII]$λ$5007A emission-line width in a sample of $\sim$80 local active galaxies: A surrogate for $Ï_{\star}$?
Vardha N. Bennert, Donald Loveland, Edward Donohue +10
X-ray absorption lines in the Seyfert 1 galaxy NGC 5548 discovered with Chandra-LETGS
J. S. Kaastra, R. Mewe, D. A. Liedahl +2
A Partial Eclipse of the Heart: The Absorbed X-ray Low State in Mrk 1048
M. L. Parker, N. Schartel, S. Komossa +3
The rise of an ionized wind in the Narrow Line Seyfert 1 Galaxy Mrk 335 observed by XMM-Newton and HST
A. L. Longinotti, Y. Krongold, G. Kriss +6
Extended narrow-line emission in the bright Seyfert 1.5 galaxy HE 2211-3903
J. Scharwaechter, M. A. Dopita, J. Zuther +3
Evidence for an emerging disc wind and collimated outflow during an X-ray flare in the narrow-line Seyfert 1 galaxy Mrk 335
L. C. Gallo, A. G. Gonzalez, S. G. H. Waddell +13
Independent Black Hole Mass Estimation for the γ-ray Detected Archetypal Narrow-Line Seyfert 1 Galaxy 1H 0323+342 from X-ray Variability
Hai-Wu Pan, Weimin Yuan, Su Yao +2
Gravitational Wave Recoil Oscillations of Black Holes: Implications for Unified Models of Active Galactic Nuclei
S. Komossa, David Merritt
Discovery of an ionized Fe-K edge in the z=3.91 Broad Absorption Line Quasar APM 08279+5255 with XMM-Newton
G. Hasinger, N. Schartel, S. Komossa
Flaring from the supermassive black hole in Mrk 335 studied with Swift and NuSTAR
D. R. Wilkins, L. C. Gallo, D. Grupe +3
Black Hole Masses of Intermediate-Redshift Quasars: Near Infrared Spectroscopy
Matthias Dietrich, Smita Mathur, Dirk Grupe +1
The Role of Secular Evolution in the Black Hole Growth of Narrow-Line Seyfert 1 Galaxies
G. Orban de Xivry, R. Davies, M. Schartmann +5
A large accretion disk of extreme eccentricity in the TDE ASASSN-14li
R. Cao, F. K. Liu, Z. Q. Zhou +2
C-GOALS: Chandra observations of a complete sample of luminous infrared galaxies from the IRAS Revised Bright Galaxy Survey
K. Iwasawa, D. B. Sanders, Stacy H. Teng +11
Discovery of superstrong, fading, iron line emission and double-peaked Balmer lines of the galaxy SDSSJ0952+2143 - the light echo of a huge flare
S. Komossa, H. Zhou, T. Wang +9
The warm absorber in IRAS 13349+2438: dusty or not?
J. Siebert, S. Komossa, W. Brinkmann
On the multiwavelength properties of several γ-ray detected narrow-line Seyfert 1 galaxies
Hui Yang, Weimin Yuan, Su Yao +2
Suzaku observations of Mrk 335: Confronting partial covering and relativistic reflection
L. C. Gallo, D. R. Wilkins, K. Bonson +7
The radio structure of 3C 316, a galaxy with double-peaked narrow optical emission lines
T. An, Z. Paragi, S. Frey +6
A blurred reflection interpretation for the intermediate flux state in Mrk 335
L. C. Gallo, A. C. Fabian, D. Grupe +7
Tidal disruption of stars by supermassive black holes: Status of observations
S. Komossa
Strong UV and X-ray variability of the Narrow Line Seyfert 1 Galaxy WPVS 007 -- on the nature of the X-ray low state
Dirk Grupe, S. Komossa, Julia Scharwaechter +4
The Hunt for Red Quasars: Luminous Obscured Black Hole Growth Unveiled in the Stripe 82 X-ray Survey
Stephanie M. LaMassa, Eilat Glikman, Marcella Brusa +18
Basic properties of Narrow-Line Seyfert 1 Galaxies with Relativistic Jets
L. Foschini, E. Angelakis, G. Bonnoli +25
The Spectral Energy Distributions of AGN with Double-Peaked Balmer Lines
I. Strateva, W. N. Brandt, M. Eracleous +2
The 31 Deg$^2$ Release of the Stripe 82 X-ray Survey: The Point Source Catalog
Stephanie M. LaMassa, C. Megan Urry, Nico Cappelluti +23
Finding AGN in Deep X-ray Flux States with Swift
Dirk Grupe, S. Komossa, Mason Bush +7
Chandra LETGS spectroscopy of the Quasar MR2251-178 and its warm absorber
J. M. RamÃrez, S. Komossa, V. Burwitz +1
Follow-Up Chandra Observations of Three Candidate Tidal Disruption Events
J. P. Halpern, S. Gezari, S. Komossa
Multi-Wavelength Properties of Radio-loud Narrow-Line Seyfert 1 Galaxies
S. Komossa
Radio and gamma-ray loud narrow-line Seyfert 1 galaxies in the spotlight
V. Karamanavis, E. Angelakis, S. Komossa +3
1H0707-495 in 2011: An X-ray source within a gravitational radius of the event horizon
A. C. Fabian, A. Zoghbi, D. Wilkins +8
Growth of supermassive black holes, galaxy mergers and supermassive binary black holes
S. Komossa, J. G. Baker, F. K. Liu
Searching for a pair of accreting supermassive black holes in J1425+3231
K. Ã. Gabányi, S. Frey, Z. Paragi +2
An Ultrasoft X-ray Flare from 3XMM J152130.7+074916: a Tidal Disruption Event Candidate
Dacheng Lin, Peter W. Maksym, Jimmy A. Irwin +6
Radio-to-gamma-ray Monitoring of the Narrow-Line Seyfert 1 Galaxy PMN J0948+0022 from 2008 to 2011
L. Foschini, E. Angelakis, L. Fuhrmann +39
A Huge Drop in X-ray Luminosity of the Non-Active Galaxy RXJ1242.6-1119A, and First Post-Flare Spectrum - Testing the Tidal Disruption Scenario
S. Komossa, J. Halpern, N. Schartel +3
High cadence, linear and circular polarization monitoring of OJ 287 - Helical magnetic field in a bent jet
I. Myserlis, S. Komossa, E. Angelakis +5
Evolution of tidal disruption candidates discovered by XMM-Newton
P. Esquej, R. D. Saxton, S. Komossa +8
The Radio Properties of Radio-Loud Narrow-Line Seyfert 1 Galaxies on Parsec Scales
Minfeng Gu, Yongjun Chen, S. Komossa +5
The detection and X-ray view of the changing look AGN HE 1136-2304
M. L. Parker, S. Komossa, W. Kollatschny +9
A candidate tidal disruption event in the Galaxy cluster Abell 3571
N. Cappelluti, M. Ajello, P. Rebusco +8
A recoiling supermassive black hole in the quasar SDSSJ092712.65+294344.0?
S. Komossa, H. Zhou, H. Lu
Follow-Up HST/STIS Spectroscopy of Three Candidate Tidal Disruption Events
S. Gezari, J. P. Halpern, S. Komossa +2
The WC6 Wolf-Rayet star MLA 1159 in M31 and its ionization nebula BA 1-642
J. Greiner, G. H. Tovmassian, S. Komossa +2
Chandra High resolution Observations of CID-42, a candidate recoiling SMBH
F. Civano, M. Elvis, G. Lanzuisi +15
Narrow-line Seyfert 1 Galaxies and the M_BH - sigma Relation
S. Komossa, D. Xu
No apparent superluminal motion in the first-known jetted tidal disruption event Swift J1644+5734
J. Yang, Z. Paragi, A. J. van der Horst +5
The location of an active nucleus and the soft X-ray shadowing by a tidal tail in the ULIRG Mrk 273
K. Iwasawa, J. M. Mazzarella, J. A. Surace +9
Multifrequency Observations of the Gamma-Ray Blazar 3C 279 in Low-State during Integral AO-1
W. Collmar, M. Böttcher, V. Burwitz +19