324 citations
- The Ohio State UniversityUS34 papers
- Center for Astrophysics Harvard & SmithsonianUS29 papers
- Max Planck Institute for Radio AstronomyDE28 papers
- Space Telescope Science InstituteUS27 papers
- Tel Aviv UniversityIL20 papers
- University of CopenhagenDK20 papers
- European Space Astronomy CentreES19 papers
- Goddard Space Flight CenterUS18 papers
- Pennsylvania State UniversityUS18 papers
- Carnegie ObservatoriesUS17 papers
- Johns Hopkins UniversityUS17 papers
- University of PaduaIT17 papers
8 papers · 2 filters
Multiwavelength survey of a sample of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies
L. Foschini, M. Berton, A. Caccianiga +27
We report on a multiwavelength survey of a sample of 42 flat-spectrum radio-loud narrow-line Seyfert 1 galaxies (RLNLS1s). This is the largest known sample of this type of active g…
An Ultrasoft X-ray Flare from 3XMM J152130.7+074916: a Tidal Disruption Event Candidate
Dacheng Lin, Peter W. Maksym, Jimmy A. Irwin +6
We report on the discovery of an ultrasoft X-ray transient source, 3XMM J152130.7+074916. It was serendipitously detected in an XMM-Newton observation on 2000 August 23, and its lo…
ASASSN-15lh: A Highly Super-Luminous Supernova
Subo Dong, B. J. Shappee, J. L. Prieto +27
We report the discovery of ASASSN-15lh (SN 2015L), which we interpret as the most luminous supernova yet found. At redshift z = 0.2326, ASASSN-15lh reached an absolute magnitude of…
Six Months of Multi-Wavelength Follow-up of the Tidal Disruption Candidate ASASSN-14li and Implied TDE Rates from ASAS-SN
T. W. -S. Holoien, C. S. Kochanek, J. L. Prieto +21
We present ground-based and Swift photometric and spectroscopic observations of the candidate tidal disruption event (TDE) ASASSN-14li, found at the center of PGC 043234 ($d\simeq9…
IC 3599 did it again: A second outburst of the X-ray transient Seyfert 1.9 Galaxy
Dirk Grupe, S. Komossa, Richard Saxton
We report on the Swift discovery of a second high-amplitude (factor 100) outburst of the Seyfert 1.9 galaxy IC 3599, and discuss implications for outburst scenarios. Swift detected…
Finding AGN in Deep X-ray Flux States with Swift
Dirk Grupe, S. Komossa, Mason Bush +7
We report on our ongoing project of finding Active Galactic Nuclei (AGN) that go into deep X-ray flux states detected by Swift. Swift is performing an extensive study on the flux a…