KN
Kari Nilsson
astro-ph.HEastro-ph.COastro-ph.GAastro-phastro-ph.IMhep-phastro-ph.SRgr-qchep-ex
On Valency
published · living versionsW_r8fyue77·v1 · currentpublished
The IXPE view of GRB 221009A
with Michela Negro, Niccoló Di Lalla, Nicola Omodei, Péter Veres +106
1 version
Preprints & journals
237 papers in the corpus · 1994–2026Revisiting EBL Constraints from Gamma-Ray Observations: A Critical Assessment and Methodological Improvements2609.08246v1 · K. Abe, S. Abe, J. Abhir et al.2026 · 0 citationsarXiv
The October 2022 flare in OJ 287 and the mass of its primary black hole2609.04998v1 · Mauri J. Valtonen, Staszek Zola, Manpreet Singh et al.2026 · 0 citationsarXiv
Constraints on the VHE counterpart of two binary black hole mergers observed by the MAGIC and CTAO LST-1 telescopes2607.19972v3 · K. Abe, S. Abe, J. Abhir et al.2026 · 0 citationsPublications of the Astronomical Society of the Pacific, Volume 138, Number 8, August 2026
Detection of the distant quasar OP 313 with the first Large-Sized Telescope of CTAO2605.26681v1 · K. Abe, S. Abe, J. Abhir et al.2026 · 0 citationsarXiv
Tracking down the broadband polarimetric properties of PG 1553+1132605.12602v1 · Riccardo Middei, Svetlana G. Jorstad, Alan P. Marscher et al.2026 · 0 citationsarXiv
The January 2010 flare of Mrk421: Insights from a stochastic acceleration model2604.20480v1 · K. Abe, S. Abe, J. Abhir et al.2026 · 0 citationsarXiv
MAGIC observations of NGC 4278. The first low-luminosity radio galaxy with compact jets detected at TeV energies2603.22955v1 · S. Abe, J. Abhir, V. A. Acciari et al.2026 · 0 citationsarXiv
Polarisation angle variability in tidal disruption events2603.02324v1 · A. Floris, I. Liodakis, K. I. I. Koljonen et al.2026 · 1 citationarXiv
Investigating Active Galactic Nuclei variability with the Cherenkov Telescope Array Observatory2601.05995v1 · G. Grolleron, J. Biteau, M. Cerruti et al.2026 · 0 citationsarXiv
First detection of VHE gamma-ray signal from the FSRQ TON 05992601.03873v2 · K. Abe, S. Abe, J. Abhir et al.2026 · 2 citationsMNRAS, 546, 4, (2026) stag032
The IXPE and multifrequency polarimetric view of the extreme blazars 1ES 1101-232 and RGB J0710+5912512.19193v2 · Fabrizio Tavecchio, Dawoon E. Kim, Gabriel Emery et al.2025 · 1 citationarXiv
CAZ catalog and optical light curves of 7918 blazar-selected active galactic nuclei2510.16584v3 · Pouya M. Kouch, Elina Lindfors, Talvikki Hovatta et al.2025 · 1 citationA&A 708, A382 (2026)
Detection of Compton scattering in the jet of 3C 842510.16109v2 · Ioannis Liodakis, Sudip Chakraborty, Fr'ed'eric Marin et al.2025 · 3 citationsApJL 994 (2025) L9
Identifying the secondary jet in the RadioAstron image of OJ~2872510.06744v1 · Mauri J. Valtonen, Lankeswar Dey, Staszek Zola et al.2025 · 5 citationsThe Astrophysical Journal, October 9, 2025
Polarimetric Diversity in Tidal Disruption Events: Comparative Study of Low-Polarised sources with AT2020mot2509.08895v1 · A. Floris, I. Liodakis, K. I. I. Koljonen et al.2025 · 3 citationsarXiv
Combined dark matter search towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS2508.20229v1 · S. Abdollahi, L. Baldini, R. Bellazzini et al.2025 · 5 citationsarXiv
Optical polarization properties of the closest tidal disruption event AT 2023clx indicate origin from tidal stream shocks2508.09309v1 · Karri I. I. Koljonen, Kari Nilsson, Ioannis Liodakis et al.2025 · 4 citationsarXiv
Very-high-energy observations of the Seyfert galaxy NGC 4151 with MAGIC -- Indication of another gamma-ray obscured candidate neutrino source2507.16527v1 · K. Abe, S. Abe, J. Abhir et al.2025 · 3 citationsA&A 702, A38 (2025)
IXPE Observations of the Blazar Mrk 501 in 2022: A Multiwavelength View2507.07232v1 · L. Lisalda, E. Gau, H. Krawczynski et al.2025 · 2 citationsarXiv
Testing the ubiquitous presence of very high energy emission in gamma-ray bursts with the MAGIC telescopes2507.05215v1 · S. Abe, J. Abhir, A. Abhishek et al.2025 · 2 citationsAstronomy & Astrophysics, Vol. 700 , p. A96, 2025
Determining the origin of the X-ray emission in blazars through multiwavelength polarization2505.13603v2 · Ioannis Liodakis, Haocheng Zhang, Stella Boula et al.2025 · 10 citationsA&A 698, L19 (2025)
High optical to X-ray polarization ratio reveals Compton scattering in BL Lacertae's jet2505.01832v1 · Ivan Agudo, Ioannis Liodakis, Jorge Otero-Santos et al.2025 · 16 citationsarXiv
Very-high-energy gamma-ray detection and long-term multi-wavelength view of the flaring blazar B2 1811+312503.19054v1 · K. Abe, S. Abe, J. Abhir et al.2025 · 3 citationsA&A 697, A172 (2025)
Optimizing the hunt for extraterrestrial high-energy neutrino counterparts2502.17567v2 · Pouya M. Kouch, Elina Lindfors, Talvikki Hovatta et al.2025 · 1 citationA&A 696, A73 (2025)
The polarisation behaviour of OJ 287 viewed through radio, millimetre and optical observations between 2015 and 20172501.08652v1 · J. Jormanainen, T. Hovatta, E. Lindfors et al.2025 · 2 citationsA&A 694, A206 (2025)
Characterization of Markarian 421 during its most violent year: Multiwavelength variability and correlations2501.03831v1 · K. Abe, S. Abe, J. Abhir et al.2025 · 11 citationsarXiv
Time-dependent modelling of short-term variability in the TeV-blazar VER J0521+211 during the major flare in 20202412.15836v1 · S. Abe, J. Abhir, A. Abhishek et al.2024 · 1 citationA&A 694, A308 (2025)
Insights from the first flaring activity of a high-synchrotron-peaked blazar with X-ray polarization and VHE gamma rays2410.23140v3 · K. Abe, S. Abe, J. Abhir et al.2024 · 7 citationsA&A 695, A217 (2025)
Multi-epoch leptohadronic modeling of neutrino source candidate blazar PKS 0735+1782409.04165v2 · A. Omeliukh, S. Garrappa, V. Fallah Ramazani et al.2024 · 9 citationsA&A 695, A266 (2025)
Distance estimation of gamma-ray emitting BL Lac objects from imaging observations2408.14854v1 · K. Nilsson, V. Fallah Ramazani, E. Lindfors et al.2024 · 1 citationA&A 691, A154 (2024)
Association of the IceCube neutrinos with blazars in the CGRaBS sample2407.07153v1 · Pouya M. Kouch, Elina Lindfors, Talvikki Hovatta et al.2024 · 15 citationsA&A 690, A111 (2024)
Galaxy-group-associated distances to Very High Energy gamma-ray emitting BL Lacs KUV 00311-1938 and S2 0109+222406.13786v1 · Karri I. I. Koljonen, Elina Lindfors, Kari Nilsson et al.2024 · 1 citationarXiv
Constraints on Lorentz invariance violation from the extraordinary Mrk 421 flare of 2014 using a novel analysis method2406.07140v1 · S. Abe, J. Abhir, A. Abhishek et al.2024 · 9 citationsJournal of Cosmology and Astroparticle Physics 07 p.044 (2024)
IXPE observation of PKS 2155-304 reveals the most highly polarized blazar2406.01693v1 · Pouya M. Kouch, Ioannis Liodakis, Riccardo Middei et al.2024 · 36 citationsA&A 689, A119 (2024)
Euclid. I. Overview of the Euclid mission2405.13491v2 · Y. Mellier, Abdurro'uf, J. A. Acevedo Barroso et al.2024 · 622 citationsA&A 697, A1 (2025)
Evidence of jet activity from the secondary black hole in the OJ287 binary system2405.08627v1 · Mauri J. Valtonen, Staszek Zola, Alok C. Gupta et al.2024 · 17 citationsarXiv
Broadband Multi-wavelength Properties of M87 during the 2018 EHT Campaign including a Very High Energy Flaring Episode2404.17623v3 · J. C. Algaba, M. Balokovic, S. Chandra et al.2024 · 35 citationsA&A 692, A140 (2024)
The extreme coronal line emitter AT 2022fpx: Varying optical polarization properties and late-time X-ray flare2403.04877v2 · Karri I. I. Koljonen, Ioannis Liodakis, Elina Lindfors et al.2024 · 17 citationsarXiv
The variability patterns of the TeV blazar PG 1553+113 from a decade of MAGIC and multi-band observations2403.02159v1 · H. Abe, S. Abe, J. Abhir et al.2024 · 9 citationsarXiv
Performance and first measurements of the MAGIC Stellar Intensity Interferometer2402.04755v1 · S. Abe, J. Abhir, V. A. Acciari et al.2024 · 25 citationsarXiv
Insights into the broad-band emission of the TeV blazar Mrk 501 during the first X-ray polarization measurements2401.08560v2 · S. Abe, J. Abhir, V.A. Acciari et al.2024 · 21 citationsarXiv
Constraints on axion-like particles with the Perseus Galaxy Cluster with MAGIC2401.07798v1 · H. Abe, S. Abe, J. Abhir et al.2024 · 26 citationsarXiv
First characterization of the emission behavior of Mrk421 from radio to VHE gamma rays with simultaneous X-ray polarization measurements2312.10732v1 · S. Abe, J. Abhir, V. A. Acciari et al.2023 · 10 citationsarXiv
MAGIC detection of GRB 201216C at 2310.06473v1 · H. Abe, S. Abe, V. A. Acciari et al.2023 · 25 citationsMonthly Notices of the Royal Astronomical Society, Volume 527, Issue 3, January 2024, Pages 5856-5867
Performance of the joint LST-1 and MAGIC observations evaluated with Crab Nebula data2310.01954v1 · H. Abe, K. Abe, S. Abe et al.2023 · 14 citationsA&A 680, A66 (2023)
X-ray Polarization of the BL Lac Type Blazar 1ES 0229+2002310.01635v1 · Steven R. Ehlert, Ioannis Liodakis, Riccardo Middei et al.2023 · 41 citationsarXiv
Variability studies of active galactic nuclei from the long-term monitoring program with the Cherenkov Telescope Array2309.12157v1 · Guillaume Grolleron, Josefa Becerra Gonz'alez, Jonathan Biteau et al.2023 · 3 citationsarXiv
On the need of an ultramassive black hole in OJ 2872308.03017v1 · Mauri J. Valtonen, Staszek Zola, Achamveedu Gopakumar et al.2023 · 8 citationsarXiv
Observational Implications of OJ 287's Predicted 2022 Disk Impact in the Black Hole Binary Model2308.01878v1 · Mauri J. Valtonen, Lankeswar Dey, Achamveedu Gopakumar et al.2023 · 8 citationsarXiv
Optical polarization from colliding stellar stream shocks in a tidal disruption event.37167392 · Liodakis, I, Koljonen, K I I, Blinov, D et al.2023 · 19 citationsScience (New York, N.Y.). 2023;380(6645):656-658
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