371 citations · 486 across the 31 of their papers we have counts for
8 papers · 1 filter
A gamma-ray flare from TXS 1508+572: characterizing the jet of a blazar in the early Universe
Andrea Gokus, Markus Böttcher, Manel Errando +13
Blazars can be detected from very large distances due to their high luminosity. However, the detection of -ray emission of blazars beyond has only been confirmed for a sma…
Very-long-baseline interferometry study of the flaring blazar TXS 1508+572 in the early Universe
P. Benke, A. Gokus, M. Lisakov +7
High-redshift blazars provide valuable input to studies of the evolution of active galactic nuclei (AGN) jets and provide constraints on cosmological models. Detections at high ene…
Astronomy's climate emissions: Global travel to scientific meetings in 2019
Andrea Gokus, Knud Jahnke, Paul M Woods +11
Travel to academic conferences -- where international flights are the norm -- is responsible for a sizeable fraction of the greenhouse gas (GHG) emissions associated with academic…
Rapid Variability of Mrk 421 During Extreme Flaring as Seen Through the Eyes of XMM-Newton
A. Gokus, J. Wilms, M. Kadler +31
By studying the variability of blazars across the electromagnetic spectrum, it is possible to resolve the underlying processes responsible for rapid flux increases, so-called flare…
The SRG/eROSITA all-sky survey: First X-ray catalogues and data release of the western Galactic hemisphere
A. Merloni, G. Lamer, T. Liu +142
The eROSITA telescope array aboard the Spektrum Roentgen Gamma (SRG) satellite began surveying the sky in December 2019, with the aim of producing all-sky X-ray source lists and sk…
TELAMON: Effelsberg monitoring of AGN jets with very-high-energy astroparticle emission -- I. Program description and sample characterization
F. Eppel, M. Kadler, J. Heßdörfer +23
Aims. We introduce the TELAMON program which is using the Effelsberg 100-m telescope to monitor the radio spectra of active galactic nuclei (AGN) under scrutiny in astroparticle ph…
eROSITA Detection of a Cloud Obscuration Event in the Seyfert AGN EC 04570-5206
Alex Markowitz, Mirko Krumpe, David Homan +13
Recent years have seen broad observational support for the presence of a clumpy component within the circumnuclear gas around SMBHs. In the X-ray band, individual clouds can manife…
Insights into the broad-band emission of the TeV blazar Mrk 501 during the first X-ray polarization measurements
S. Abe, J. Abhir, V. A. Acciari +260
We present the first multi-wavelength study of Mrk 501 including very-high-energy (VHE) gamma-ray observations simultaneous to X-ray polarization measurements from the Imaging X-ra…