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  1. Ansatte

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Karri Iiro Iisakki Koljonen

Last ned pressefoto
Last ned pressefoto
Foto:

Karri Iiro Iisakki Koljonen

Forsker
Institutt for fysikk

karri.koljonen@ntnu.no
Realfagbygget, D5-113, Gløshaugen
Publikasjoner

Publikasjoner

  • Kronologisk
  • Etter kategori
  • Alle publikasjoner i Nasjonalt vitenarkiv (NVA)

2025

  • Koljonen, Karri Iiro Iisakki; Linares, Manuel; Miller-Jones, J.C.A.. (2025) Jet break revealed in the transitional millisecond pulsar candidate 4FGL J0427.8-6704. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel
  • Kouch, Pouya M.; Lindfors, Elina; Hovatta, Talvikki; Liodakis, Ioannis; Koljonen, Karri Iiro Iisakki; Nilsson, Kari. (2025) Optimizing the hunt for extraterrestrial high-energy neutrino counterparts. Astronomy and Astrophysics (A & A)
    Vitenskapelig artikkel
  • Misra, Devina; Koljonen, Karri Iiro Iisakki; Linares, Manuel. (2025) The slowest spinning Galactic-field spider PSR J1932+2121: A history of inefficient mass transfer. Monthly Notices of the Royal Astronomical Society: Letters (MNRAS Letters)
    Vitenskapelig artikkel

2024

  • Koljonen, Karri Iiro Iisakki; Lindfors, Elina; Nilsson, Kari; Heinämäki, Pekka; Kotilainen, Jari. (2024) Galaxy group-associated distances to very high energy gamma-ray emitting BL Lacs KUV 00311-1938 and S2 0109+22. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel
  • Koljonen, Karri Iiro Iisakki; Lindseth, Sindre Synnes; Alegret, Manuel Linares; Harding, A.K.; Turchetta, Marco. (2024) The invisible black widow PSR J1720−0534: implications for the electron density towards the North Polar Spur. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel
  • Turchetta, Marco; Alegret, Manuel Linares; Koljonen, Karri Iiro Iisakki; Casares, Jorge; Miles-Páez, Paulo A.; Rodríguez-Gil, Pablo. (2024) COBIPULSE: A Systematic Search for Compact Binary Millisecond Pulsars. The Astrophysical Journal (ApJ)
    Vitenskapelig artikkel
  • Kouch, Pouya M.; Lindfors, Elina; Hovatta, Talvikki; Liodakis, Ioannis; Koljonen, Karri Iiro Iisakki; Nilsson, Kari. (2024) Association of the IceCube neutrinos with blazars in the CGRaBS sample. Astronomy and Astrophysics (A & A)
    Vitenskapelig artikkel
  • Echiburú-Trujillo, Constanza; Tetarenko, Alexandra J.; Haggard, Daryl; Russell, Thomas D.; Koljonen, Karri Iiro Iisakki; Bahramian, Arash. (2024) Chasing the Break: Tracing the Full Evolution of a Black Hole X-Ray Binary Jet with Multiwavelength Spectral Modeling. The Astrophysical Journal (ApJ)
    Vitenskapelig artikkel
  • Audard, Marc; Awaki, Hisamitsu; Ballhausen, Ralf; Bamba, Aya; Behar, Ehud; Boissay-Malaquin, Rozenn. (2024) The XRISM/Resolve View of the Fe K Region of Cyg X-3. Astrophysical Journal Letters
    Vitenskapelig artikkel
  • Koljonen, Karri Iiro Iisakki; Liodakis, Ioannis; Lindfors, Elina; Nilsson, Kari; Reynolds, Thomas M.; Charalampopoulos, Panos. (2024) The extreme coronal line emitter AT 2022fpx: varying optical polarization properties and late-time X-ray flare. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel

2023

  • Liodakis, I.; Koljonen, Karri; Blinov, D.; Lindfors, E.; Alexander, K.D.; Hovatta, T.. (2023) Optical polarization from colliding stellar stream shocks in a tidal disruption event. Science
    Vitenskapelig artikkel
  • Koljonen, Karri; Long, K.S.; Matthews, J.H.; Knigge, C.. (2023) The origin of optical emission lines in the soft state of X-ray binary outbursts: The case of MAXI J1820+070. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel
  • Koljonen, Karri; Satalecka, Konstancja; Lindfors, Elina; Liodakis, Ioannis. (2023) Microquasar Cyg X-3 - a unique jet-wind neutrino factory?. Monthly Notices of the Royal Astronomical Society: Letters (MNRAS Letters)
    Vitenskapelig artikkel
  • Vilhu, O.; Koljonen, Karri; Hannikainen, D.C.. (2023) Secrets behind the RXTE/ASM light curve of Cyg X-3: Feedback between wind-fed accretion and luminosity. Astronomy and Astrophysics (A & A)
    Vitenskapelig artikkel
  • Koljonen, Karri; Alegret, Manuel Linares. (2023) A Gaia view of the optical and X-ray luminosities of compact binary millisecond pulsars. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel
  • Turchetta, Marco; Alegret, Manuel Linares; Koljonen, Karri; Sen, Bidisha. (2023) Quantifying irradiation in spider pulsars: the extreme case of PSR J1622-0315. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel

2022

  • Panizo-Espinar, G.; Padilla, M. Armas; Muñoz-Darias, T.; Koljonen, Karri; Cúneo, V.A.; Sánchez-Sierras, J.. (2022) Discovery of optical and infrared accretion disc wind signatures in the black hole candidate MAXI J1348-630. Astronomy and Astrophysics (A & A)
    Vitenskapelig artikkel
  • Saikia, Payaswini; Russell, David M.; Baglio, M.C.; Bramich, D.M.; Casella, Piergiorgio; Trigo, Maria Diaz. (2022) A Multiwavelength Study of GRS 1716-249 in Outburst: Constraints on Its System Parameters. The Astrophysical Journal (ApJ)
    Vitenskapelig artikkel

Tidsskriftspublikasjoner

  • Koljonen, Karri Iiro Iisakki; Linares, Manuel; Miller-Jones, J.C.A.. (2025) Jet break revealed in the transitional millisecond pulsar candidate 4FGL J0427.8-6704. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel
  • Kouch, Pouya M.; Lindfors, Elina; Hovatta, Talvikki; Liodakis, Ioannis; Koljonen, Karri Iiro Iisakki; Nilsson, Kari. (2025) Optimizing the hunt for extraterrestrial high-energy neutrino counterparts. Astronomy and Astrophysics (A & A)
    Vitenskapelig artikkel
  • Misra, Devina; Koljonen, Karri Iiro Iisakki; Linares, Manuel. (2025) The slowest spinning Galactic-field spider PSR J1932+2121: A history of inefficient mass transfer. Monthly Notices of the Royal Astronomical Society: Letters (MNRAS Letters)
    Vitenskapelig artikkel
  • Koljonen, Karri Iiro Iisakki; Lindfors, Elina; Nilsson, Kari; Heinämäki, Pekka; Kotilainen, Jari. (2024) Galaxy group-associated distances to very high energy gamma-ray emitting BL Lacs KUV 00311-1938 and S2 0109+22. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel
  • Koljonen, Karri Iiro Iisakki; Lindseth, Sindre Synnes; Alegret, Manuel Linares; Harding, A.K.; Turchetta, Marco. (2024) The invisible black widow PSR J1720−0534: implications for the electron density towards the North Polar Spur. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel
  • Turchetta, Marco; Alegret, Manuel Linares; Koljonen, Karri Iiro Iisakki; Casares, Jorge; Miles-Páez, Paulo A.; Rodríguez-Gil, Pablo. (2024) COBIPULSE: A Systematic Search for Compact Binary Millisecond Pulsars. The Astrophysical Journal (ApJ)
    Vitenskapelig artikkel
  • Kouch, Pouya M.; Lindfors, Elina; Hovatta, Talvikki; Liodakis, Ioannis; Koljonen, Karri Iiro Iisakki; Nilsson, Kari. (2024) Association of the IceCube neutrinos with blazars in the CGRaBS sample. Astronomy and Astrophysics (A & A)
    Vitenskapelig artikkel
  • Echiburú-Trujillo, Constanza; Tetarenko, Alexandra J.; Haggard, Daryl; Russell, Thomas D.; Koljonen, Karri Iiro Iisakki; Bahramian, Arash. (2024) Chasing the Break: Tracing the Full Evolution of a Black Hole X-Ray Binary Jet with Multiwavelength Spectral Modeling. The Astrophysical Journal (ApJ)
    Vitenskapelig artikkel
  • Audard, Marc; Awaki, Hisamitsu; Ballhausen, Ralf; Bamba, Aya; Behar, Ehud; Boissay-Malaquin, Rozenn. (2024) The XRISM/Resolve View of the Fe K Region of Cyg X-3. Astrophysical Journal Letters
    Vitenskapelig artikkel
  • Koljonen, Karri Iiro Iisakki; Liodakis, Ioannis; Lindfors, Elina; Nilsson, Kari; Reynolds, Thomas M.; Charalampopoulos, Panos. (2024) The extreme coronal line emitter AT 2022fpx: varying optical polarization properties and late-time X-ray flare. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel
  • Liodakis, I.; Koljonen, Karri; Blinov, D.; Lindfors, E.; Alexander, K.D.; Hovatta, T.. (2023) Optical polarization from colliding stellar stream shocks in a tidal disruption event. Science
    Vitenskapelig artikkel
  • Koljonen, Karri; Long, K.S.; Matthews, J.H.; Knigge, C.. (2023) The origin of optical emission lines in the soft state of X-ray binary outbursts: The case of MAXI J1820+070. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel
  • Koljonen, Karri; Satalecka, Konstancja; Lindfors, Elina; Liodakis, Ioannis. (2023) Microquasar Cyg X-3 - a unique jet-wind neutrino factory?. Monthly Notices of the Royal Astronomical Society: Letters (MNRAS Letters)
    Vitenskapelig artikkel
  • Vilhu, O.; Koljonen, Karri; Hannikainen, D.C.. (2023) Secrets behind the RXTE/ASM light curve of Cyg X-3: Feedback between wind-fed accretion and luminosity. Astronomy and Astrophysics (A & A)
    Vitenskapelig artikkel
  • Koljonen, Karri; Alegret, Manuel Linares. (2023) A Gaia view of the optical and X-ray luminosities of compact binary millisecond pulsars. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel
  • Turchetta, Marco; Alegret, Manuel Linares; Koljonen, Karri; Sen, Bidisha. (2023) Quantifying irradiation in spider pulsars: the extreme case of PSR J1622-0315. Monthly notices of the Royal Astronomical Society
    Vitenskapelig artikkel
  • Panizo-Espinar, G.; Padilla, M. Armas; Muñoz-Darias, T.; Koljonen, Karri; Cúneo, V.A.; Sánchez-Sierras, J.. (2022) Discovery of optical and infrared accretion disc wind signatures in the black hole candidate MAXI J1348-630. Astronomy and Astrophysics (A & A)
    Vitenskapelig artikkel
  • Saikia, Payaswini; Russell, David M.; Baglio, M.C.; Bramich, D.M.; Casella, Piergiorgio; Trigo, Maria Diaz. (2022) A Multiwavelength Study of GRS 1716-249 in Outburst: Constraints on Its System Parameters. The Astrophysical Journal (ApJ)
    Vitenskapelig artikkel

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