Prospects for future binary black hole gravitational wave studies in light of PTA measurements
NANOGrav and other Pulsar Timing Arrays (PTAs) have discovered a common-spectrum
process in the nHz range that may be due to gravitational waves (GWs): if so, they are likely …
process in the nHz range that may be due to gravitational waves (GWs): if so, they are likely …
Stellar tidal disruption events in general relativity
A tidal disruption event (TDE) ensues when a star passes too close to a supermassive black
hole (SMBH) in a galactic center, and is ripped apart by its tidal field. The gaseous debris …
hole (SMBH) in a galactic center, and is ripped apart by its tidal field. The gaseous debris …
A systematic search for close supermassive black hole binaries in the Catalina Real-time Transient Survey
Hierarchical assembly models predict a population of supermassive black hole (SMBH)
binaries. These are not resolvable by direct imaging but may be detectable via periodic …
binaries. These are not resolvable by direct imaging but may be detectable via periodic …
Long-term optical monitoring of TeV emitting blazars-I. Data analysis
K Nilsson, E Lindfors, LO Takalo, R Reinthal… - Astronomy & …, 2018 - aanda.org
We present ten years of R-band monitoring data of 31 northern blazars which were either
detected at very high-energy (VHE) gamma rays or listed as potential VHE gamma-ray …
detected at very high-energy (VHE) gamma rays or listed as potential VHE gamma-ray …
Candidate periodically variable quasars from the Dark Energy Survey and the Sloan Digital Sky Survey
Periodically variable quasars have been suggested as close binary supermassive black
holes. We present a systematic search for periodic light curves in 625 spectroscopically …
holes. We present a systematic search for periodic light curves in 625 spectroscopically …
Multiwavelength evidence for quasi-periodic modulation in the gamma-ray blazar PG 1553+ 113
M Ackermann, M Ajello, A Albert… - The Astrophysical …, 2015 - iopscience.iop.org
We report for the first time a γ-ray and multiwavelength nearly periodic oscillation in an
active galactic nucleus. Using the Fermi Large Area Telescope we have discovered an …
active galactic nucleus. Using the Fermi Large Area Telescope we have discovered an …
The dual nature of blazar fast variability: Space and ground observations of S5 0716+ 714
CM Raiteri, M Villata, D Carosati… - Monthly Notices of …, 2021 - academic.oup.com
ABSTRACT Blazar S5 0716+ 714 is well-known for its short-term variability, down to intraday
time-scales. We here present the 2-min cadence optical light curve obtained by the TESS …
time-scales. We here present the 2-min cadence optical light curve obtained by the TESS …
Detection of possible quasi-periodic oscillations in the long-term optical light curve of the BL Lac object OJ 287
G Bhatta, S Zola, M Ostrowski, M Winiarski… - The Astrophysical …, 2016 - iopscience.iop.org
The detection of periodicity in the broadband non-thermal emission of blazars has so far
been proven to be elusive. However, there are a number of scenarios that could lead to …
been proven to be elusive. However, there are a number of scenarios that could lead to …
Search for quasi-periodic oscillations in TESS light curves of bright Fermi Blazars
In a previous paper, we reported evidence for quasi-periodicities in the Transiting Exoplanet
Survey Satellite (TESS) light curves of BL Lacerate and two other blazars found …
Survey Satellite (TESS) light curves of BL Lacerate and two other blazars found …
Transient quasi-periodic oscillations at γ-rays in the TeV blazar PKS 1510-089
We present periodicity search analyses on the γ-ray light curve of the TeV blazar PKS 1510-
089 observed by the Fermi Large Area Telescope. We report the detection of two transient …
089 observed by the Fermi Large Area Telescope. We report the detection of two transient …