Search Results - "Koljonen, K. I. I."

The origin of optical emission lines in the soft state of X-ray binary outbursts: the case of MAXI J1820+070 by Koljonen, K I I, Long, K S, Matthews, J H, Knigge, C

“…ABSTRACT The optical emission line spectra of X-ray binaries (XRBs) are thought to be produced in an irradiated atmosphere, possibly the base of a wind,…”
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The invisible black widow PSR J1720−0534: implications for the electron density towards the North Polar Spur by Koljonen, K I I, Lindseth, S S, Linares, M, Harding, A K, Turchetta, M

“…ABSTRACT Radio emission from pulsars can be used to map out their distances through dispersion measure (DM), which quantifies the amount of radio pulse…”
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Rapid compact jet quenching in the Galactic black hole candidate X-ray binary MAXI J1535−571 by 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, Maitra, D, Markoff, S, Migliari, S, Parikh, A S, Plotkin, R M, Rupen, M, Sarazin, C, Soria, R, Wijnands, R

“…ABSTRACT We present results from six epochs of quasi-simultaneous radio, (sub-)millimetre, infrared, optical, and X-ray observations of the black hole X-ray…”
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Optical polarization from colliding stellar stream shocks in a tidal disruption event by Liodakis, I, Koljonen, K I I, Blinov, D, Lindfors, E, Alexander, K D, Hovatta, T, Berton, M, Hajela, A, Jormanainen, J, Kouroumpatzakis, K, Mandarakas, N, Nilsson, K

“…A tidal disruption event (TDE) occurs when a supermassive black hole rips apart a passing star. Part of the stellar material falls toward the black hole,…”
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Probing the effects of a thermonuclear X-ray burst on the neutron star accretion flow with NuSTAR by Degenaar, N., Koljonen, K. I. I., Chakrabarty, D., Kara, E., Altamirano, D., Miller, J. M., Fabian, A. C.

“…Observational evidence has been accumulating that thermonuclear X-ray bursts ignited on the surface of neutron stars influence the surrounding accretion flow…”
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Erratum: Gemini/GNIRS infrared spectroscopy of the Wolf-Rayet stellar wind in Cygnus X-3 by Koljonen, K. I. I., Maccarone, T. J.

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EVIDENCE OF SPREADING LAYER EMISSION IN A THERMONUCLEAR SUPERBURST by Koljonen, K. I. I., Kajava, J. J. E., Kuulkers, E.

“…ABSTRACT When a neutron star (NS) accretes matter from a companion star in a low-mass X-ray binary, the accreted gas settles onto the stellar surface through a…”
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A CONNECTION BETWEEN PLASMA CONDITIONS NEAR BLACK HOLE EVENT HORIZONS AND OUTFLOW PROPERTIES by Koljonen, K. I. I., Russell, D. M., Fernández-Ontiveros, J. A., Markoff, Sera, Russell, T. D., Miller-Jones, J. C. A., van der Horst, A. J., Bernardini, F., Casella, P., Curran, P. A., Gandhi, P., Soria, R.

“…ABSTRACT Accreting black holes are responsible for producing the fastest, most powerful outflows of matter in the universe. The formation process of powerful…”
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Bright Mini-outburst Ends the 12 yr Long Activity of the Black Hole Candidate Swift J1753.5-0127 by Zhang, G.-B., Bernardini, F., Russell, D. M., Gelfand, J. D., Lasota, J.-P., Qasim, A. Al, AlMannaei, A., Koljonen, K. I. I., Shaw, A. W., Lewis, F., Tomsick, J. A., Plotkin, R. M., Miller-Jones, J. C. A., Maitra, D., Homan, J., Charles, P. A., Kobel, P., Perez, D., Doran, R.

“…We present optical, UV, and X-ray monitoring of the short orbital period black hole X-ray binary candidate Swift J1753.5-0127, focusing on the final stages of…”
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Modelling the compact jet in MAXI J1836-194 with disc-driven shocks by 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

“…The black hole candidate MAXI J1836-194 was discovered in 2011 when it went into an outburst, and was the subject of numerous, quasi-simultaneous,…”
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Extreme particle acceleration in the microquasar Cygnus X-3 by Pellizzoni, A, Argan, A, Morelli, E, Ferrari, A, Striani, E, Di Persio, G, Pacciani, L, Picozza, P, Nizhelskij, N. A, Gianotti, F, Bulgarelli, A, Prest, M, Lipari, P, Lazzarotto, F, Salotti, L, Scalise, E, Di Cocco, G, Costa, E, Mastropietro, M, Zambra, A, Donnarumma, I, Barbiellini, G, Feroci, M, Vallazza, E, Piano, G, Rossi, E, Santolamazza, P, Monte, E. Del, Pittori, C, Giuliani, A, Sabatini, S, Mattaini, E, McCollough, M, Vittorini, V, Lapshov, I, Koljonen, K. I. I, Vercellone, S, Soffitta, P, Trushkin, S, Verrecchia, F, D'Ammando, F, Tavani, M, Trifoglio, M, Caraveo, P, Perotti, F, Labanti, C, Trois, A, Contessi, T, Morselli, A, Antonelli, A, Fuschino, F, Rapisarda, M, Evangelista, Y, Pilia, M, Zanello, D, De Paris, G, Cattaneo, P. W, Mereghetti, S, Marisaldi, M, Longo, F, Galli, M, Giommi, P, Chen, A. W, Colafrancesco, S, Pooley, G, Cocco, V, Rubini, A, Mauri, A, Pucella, G, Rappoldi, A

“…Super-massive black holes in active galaxies can accelerate particles to relativistic energies, producing jets with associated -ray emission. Galactic…”
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2006 May-July major radio flare episodes in Cygnus X-3: spectrotiming analysis of the X-ray data by Koljonen, K. I. I., McCollough, M. L., Hannikainen, D. C., Droulans, R.

“…We analyse in detail the X-ray data of the microquasar Cygnus X-3 obtained during major radio flaring episodes in 2006 with multiple observatories. The…”
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Revealing the X-ray variability of AGN with principal component analysis by 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.

“…We analyse a sample of 26 active galactic nuclei (AGN) with deep XMM–Newton observations, using principal component analysis (PCA) to find model-independent…”
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A ‘high-hard’ outburst of the black hole X-ray binary GS 1354−64 by Koljonen, K. I. I., Russell, D. M., Corral-Santana, J. M., Armas Padilla, M., Muñoz-Darias, T., Lewis, F., Coriat, M., Bauer, F. E.

“…We study in detail the evolution of the 2015 outburst of GS 1354−64 (BW Cir) at optical, UV and X-ray wavelengths using Faulkes Telescope South/Las Cumbres…”
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Unsupervised spectral decomposition of X-ray binaries with application to GX 339−4 by Koljonen, K II

“…In this paper, we explore unsupervised spectral decomposition methods for distinguishing the effect of different spectral components for a set of consecutive…”
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The hardness–intensity diagram of Cygnus X-3: revisiting the radio/X-ray states by Koljonen, K. I. I., Hannikainen, D. C., McCollough, M. L., Pooley, G. G., Trushkin, S. A.

“…Cygnus X-3 is one of the brightest X-ray and radio sources in the Galaxy and is well known for its erratic behaviour in X-rays as well as in the radio,…”
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Gemini/GNIRS infrared spectroscopy of the Wolf–Rayet stellar wind in Cygnus X-3 by Koljonen, K. I. I., Maccarone, T. J.

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The origin of optical emission lines in the soft state of X-ray binary outbursts: the case of MAXI J1820+070 by Koljonen, K. I. I, Long, K. S, Matthews, J. H, Knigge, C

“…The optical emission line spectra of X-ray binaries (XRBs) are thought to be produced in an irradiated atmosphere, possibly the base of a wind, located above…”
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Optical polarization from colliding stellar stream shocks in a tidal disruption event by Liodakis, I, Koljonen, K. I. I, Blinov, D, Lindfors, E, Alexander, K. D, Hovatta, T, Berton, M, Hajela, A, Jormanainen, J, Kouroumpatzakis, K, Mandarakas, N, Nilsson, K

“…Volume 380, Issue 6645, pp. 656-658 (2023) A tidal disruption event (TDE) occurs when a supermassive black hole rips apart a passing star. Part of the stellar…”
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Discovery of optical and infrared accretion disc wind signatures in the black hole candidate MAXI J1348-630 by Panizo-Espinar, G, Padilla, M. Armas, Muñoz-Darias, T, Koljonen, K. I. I, Cúneo, V. A, Sánchez-Sierras, J, Sánchez, D. Mata, Casares, J, Corral-Santana, J, Fender, R. P, Jiménez-Ibarra, F, Ponti, G, Steeghs, D, Torres, M. A. P

“…A&A 664, A100 (2022) MAXI J1348-630 is a low mass X-ray binary discovered in 2019 during a bright outburst. During this event, the system sampled both hard and…”
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