Publications
Rapid compact jet quenching in the Galactic black hole candidate X-ray binary MAXI J1535-571
Russell T. D., Lucchini M., Tetarenko A. J., Miller-Jones J. C. A., Sivakoff G. R., Krauss F., Mulaudzi W., Baglio M. C., Russell D. M., Altamirano D., Ceccobello C., Corbel S., Degenaar N., van den Eijnden J., Fender R., Heinz S., Koljonen K. I. I., et al.
Mon. Not. R. Astron. Soc., accepted for publication (2020)
Journal link. ADS link.
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The obscured X-ray binaries V404 Cyg, Cyg X-3, V4641 Sgr, and GRS 1915+105
Koljonen K. I. I., Tomsick J.
Astronomy & Astrophysics, 639, 13 (2020)
Journal link. ADS link.
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Joint XMM-Newton and NuSTAR observations of the reflection spectrum of III Zw 2
Chamani W., Koljonen K. I. I., Savolainen T.
Astronomy & Astrophysics, 635, 172 (2020)
Journal link. ADS link.
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Bright Mini-outburst Ends the 12 yr Long Activity of the Black Hole Candidate Swift J1753.5–0127
Zhang G.-B., Bernardini F., Russell D. M., Gelfand J. D., Lasota J.-P., Quasim A. Al, AlMannaei A., Koljonen K. I. I., et al.
The Astrophysical Journal, 876, 5 (2019)
Journal link. ADS link.
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Photoionization Emission Models for the Cyg X-3 X-Ray Spectrum
Kallman T., McCollough M., Koljonen K., Liedahl D., Miller J., Paerels F., Pooley G., Sako M., Schulz N., Trushkin S., Corrales L.
The Astrophysical Journal, 874, 51 (2019)
PDF. ADS link.
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Modelling the compact jet in MAXI J1836-194 with disc-driven shocks
Péault M., Malzac J., Coriat M., Russell T. D., Koljonen K. I. I., Belmont R., Corbel S., Drappeau S., Ferreira J., Petrucci P. O., Rodriguez J., Russell D. M.
Mon. Not. R. Astron. Soc., 482, 2447 (2019)
Journal link. ADS link.
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The Radio/X-Ray Correlation in X-Ray Binaries – Insights from a Hard X-Ray Perspective
Koljonen K. I. I., Russell D. M.
The Astrophysical Journal, 871, 26 (2019)
Journal link. ADS link.
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A Wildly Flickering Jet in the Black Hole X-Ray Binary MAXI J1535-571
Baglio M. C., Russell D. M., Casella P., Al Noori H., Al Yazeedi A., Belloni T., Buckley D. A. H., Cadolle Bel M., Ceccobello C., Corbel S., Coti Zelati F., D Bernardini F., Koljonen K. I. I., et al.
The Astrophysical Journal, 867, 114 (2018)
Journal link. ADS link.
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The hypersoft state of Cygnus X-3. A key to jet quenching in X-ray binaries?
Koljonen K. I. I., Maccarone T., McCollough M. L., Gurwell M., Trushkin S. A., Pooley G. G., Piano G., Tavani M.
Astronomy & Astrophysics, 612, 27 (2018)
PDF. ADS link.
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Optical Precursors to Black Hole X-ray Binary Outbursts: An Evolving Synchrotron Jet Spectrum in Swift J1357.2-0933
Russell D. M., Quasim A. A., Bernardini F., Plotkin R. M., Lewis F., Koljonen K. I. I., Yang Y.-J.
The Astrophysical Journal, 852, 90 (2018)
PDF. ADS link.
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Gemini/GNIRS infrared spectroscopy of the Wolf-Rayet stellar wind in Cygnus X-3
Koljonen K. I. I., Maccarone T. J.
Mon. Not. R. Astron. Soc., 472, 2181 (2017)
Journal link. ADS link.
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Variable spreading layer in 4U 1608-52 during thermonuclear X-ray bursts in the soft state
Kajava J. J. E., Koljonen K. I. I., Nättilä J., Suleimanov V., Poutanen J.
Mon. Not. R. Astron. Soc., 472, 78 (2017)
Journal link. ADS link.
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Evidence of Spreading Layer Emission in a Thermonuclear Superburst
Koljonen K. I. I., Kajava J. J. E., Kuulkers E.
The Astrophysical Journal, 829, 91 (2016)
PDF. ADS link.
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On the Optical–X-Ray Correlation from Outburst to Quiescence in Low-mass X-Ray Binaries: The Representative Cases of V404 Cyg and Cen X-4
Bernardini F., Russell D. M., Koljonen K. I. I., Stella L., Hynes R. I., Corbel S.
The Astrophysical Journal, 826, 149 (2016)
PDF. ADS link.
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A `high-hard’ outburst of the black hole X-ray binary GS 1354-64
Koljonen K. I. I., Russell D. M., Corral-Santana J. M., Armas Padilla M., Munoz-Darias T., Lewis F., Coriat M., Bauer F. E.
Mon. Not. R. Astron. Soc., 460, 942 (2016)
PDF. ADS link.
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Probing the effects of a thermonuclear X-ray burst on the neutron star accretion flow with NuSTAR
Degenaar N., Koljonen K. I. I., Chakrabarty D., Kara E., Altamirano D., Miller J. M., Fabian A. C.
Mon. Not. R. Astron. Soc., 456, 4256 (2016)
PDF. ADS link.
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Events leading up to the 2015 June Outburst of V404 Cyg
Bernardini F., Russell D. M., Shaw A. W., Lewis F., Charles P. A., Koljonen K. I. I., Lasota J. P., Casares J.
The Astrophysical Journal, 818, 5 (2016)
PDF. ADS link.
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A connection between plasma conditions near black hole event horizons and outflow properties
Koljonen K. I. I., Russell D. M., Fernandez-Ontiveros J. A., Markoff S., Russell T. D., Miller-Jones J. C. A., van der Horst A. J., Bernardini F., Casella P., Curran P. A., Gandhi P., Soria R.
The Astrophysical Journal, 814, 139 (2015)
PDF. ADS link.
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Unsupervised spectral decomposition of X-ray binaries with application to GX 339-4
Koljonen K. I. I.
Mon. Not. R. Astron. Soc., 447, 2981 (2015)
PDF. ADS link.
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Revealing the X-ray variability of AGN with principal component analysis
Parker M. L., Fabian A. C., Matt G., Koljonen K. I. I., Kara E., Alston W., Walton D. J., Marinucci A., Brenneman L., Risaliti G.
Mon. Not. R. Astron. Soc., 447, 72 (2015)
PDF. ADS link.
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2006 May-July major radio flare episodes in Cygnus X-3: spectro-timing analysis of the X-ray data
Koljonen K. I. I., Hannikainen D. C., McCollough M. L., Droulans R.
Mon. Not. R. Astron. Soc., 429, 1173 (2013)
PDF. ADS link.
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The AGILE monitoring of Cygnus X-3: transient gamma-ray emission and spectral constraints
Piano G., Tavani M., Vittorini V., Trois A., Giuliani A., Bulgarelli A., Evangelista Y., Coppi P., Del Monte E., Sabatini S., Striani E., Donnarumma I., Hannikainen D., Koljonen K. I. I., et al.
Astronomy & Astrophysics, 545, 110 (2012)
PDF. ADS link.
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AGILE detection of Cygnus X-3 gamma-ray active states during the period mid-2009/mid-2010
Bulgarelli A., Tavani M., Evangelista Y., Trifoglio M., Gianotti F., Piano G., Sabatini S., Striani E., Pooley G., Trushkin S., Nizhelskij N. A., McCollough M., Koljonen K. I. I., et al.
Astronomy & Astrophysics, 538, 63 (2012)
PDF. ADS link.
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The reoccurence of mHz QPOs in Cygnus X-3
Koljonen K. I. I., Hannikainen D. C., McCollough M. L.
Mon. Not. R. Astron. Soc., 416, 84 (2011)
PDF. ADS link.
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The hardness-intensity diagram of Cygnus X-3: revisiting the radio/X-ray states
Koljonen K. I. I., Hannikainen D. C., McCollough M. L., Pooley G. G., Trushkin S. A.
Mon. Not. R. Astron. Soc., 406, 307 (2010)
PDF. ADS link.
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Extreme particle acceleration in the microquasar Cygnus X-3
Tavani M., Bulgarelli A., Piano G., Sabatini S., Striani E., Evangelista Y., Trois A., Pooley G., Trushkin S., Nizhelskij N. A., McCollough M., Koljonen K. I. I., et al.
Nature, 462, 620 (2009)
Journal link. ADS link.
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Orbital modulation of X-ray emission lines in Cygnus X-3
Vilhu O., Hakala P., Hannikainen D. C., McCollough M. L., Koljonen K. I. I.
Astronomy & Astrophysics, 501, 679 (2009)
PDF. ADS link.