activity
20172026
most citedAuthenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using its General Relativity Centenary Flare: Improved Orbital Parameters

124 citations · 237 across the 15 of their papers we have counts for

collaborators
Showing 2024Show all

7 papers · 1 filter

astro-ph.HE2024

A Two-Week Monitoring Campaign on Mrk 421

W. Peter Maksym, Ioannis Liodakis, M. Lynne Saade +153

X-ray polarization is a unique new probe of the particle acceleration in astrophysical jets made possible through the Imaging X-ray Polarimetry Explorer. Here we report on the firs…

astro-ph.HE2024★ 1 cited

Spectropolarimetry of SN 2023ixf reveals both circumstellar material and helium core to be aspherical

Manisha Shrestha, Sabrina DeSoto, David J. Sand +33

We present multi-epoch optical spectropolarimetric and imaging polarimetric observations of the nearby Type II supernova (SN) 2023ixf discovered in M101 at a distance of 6.85 Mpc.…

astro-ph.HE2024

Optical and near-infrared polarization of the black hole X-ray binary A0620-00 in quiescence

Vadim Kravtsov, Alexandra Veledina, Andrei V. Berdyugin +12

We present simultaneous high-precision optical polarimetric and near-infrared (NIR) to ultraviolet (UV) photometric observations of low-mass black hole X-ray binary A0620-00 in the…

astro-ph.HE2024★ 5 cited

Testing particle acceleration in blazar jets with continuous high-cadence optical polarization observations

Ioannis Liodakis, Sebastian Kiehlmann, Alan P. Marscher +44

Variability can be the pathway to understanding the physical processes in astrophysical jets, however, the high-cadence observations required to test particle acceleration models a…

astro-ph.HE2024★ 35 cited

IXPE observation of PKS 2155-304 reveals the most highly polarized blazar

Pouya M. Kouch, Ioannis Liodakis, Riccardo Middei +133

We report the X-ray polarization properties of the high-synchrotron-peaked (HSP) blazar PKS 2155304 based on observations with the Imaging X-ray Polarimetry Explorer (IXPE). We…

astro-ph.HE2024★ 3 cited

Distinguishing radiation mechanisms and particle populations in blazar jets through long-term multi-band monitoring with RINGO3 and Fermi

Callum McCall, Helen Jermak, Iain A. Steele +6

We present the results of seven years of multicolour photometric monitoring of a sample of 31 -ray bright blazars using the RINGO3 polarimeter on the Liverpool Telescope from 20…

astro-ph.SR2024

A study of Be stars in the time domain. I. Spectral data and polarimetry

Adrián Castañón Esteban, Iain Steele, Helen Jermak

We present the first part of a spectroscopic and polarimetric study on a sample of 58 Be stars that have been measured since 1998. The aim of the study is to understand the timesca…