Niko Pyykkinen
niko.j.pyykkinen@utu.fi |
Publications
- The hydrogen-free circumstellar interaction in the Type Ib supernova 2021efd: A clue to the mechanism of the helium-layer stripping (2026)
- Astronomy and Astrophysics
(A1 Refereed original research article in a scientific journal) - EP250215a / GRB 250215A : NOT optical observations #39341 (2025) GCN circular Malesani, D. B.; Xu, D.; Pyykkinen, N.; Diaz Teodori, M. A.
(D2 Article in a professional compilation book) - EP250215a / GRB 250215A (potentially): NOT likely optical counterpart #39330 (2025) GCN circular Liu, X.; Zhu, Z. P.; An, J.; Fu, S. Y.; Jiang, S. Q.; Xu, D.; Fynbo, J. P. U.; Pyykkinen, N.; Diaz Teodori, M. A.
(D2 Article in a professional compilation book) - EP251023a: NOT optical counterpart detection (2025) GCN circular Liu, X.; Zhu, Z. P.; He, L. B.; An, J.; Jiang, S. Q.; Xu, D.; Fynbo, J. P. U.; Pyykkinen, Niko
(D2 Article in a professional compilation book) - ePESSTO+ Transient Classification Report for 2025-04-14 #2025-1384 (2025) Transient Name Server Classification Report Humina, Christina.; Pyykkinen, Niko.; Kravtsov, Timo.; Zimmerman, E.A.
(D2 Article in a professional compilation book) - ePESSTO+ Transient Classification Report for 2025-04-15 #2025-1394 (2025) Transient name server Classification report Pyykkinen, Niko.; Humina, Christina.; Kravtsov, Timo.; Horowicz, A.
(D2 Article in a professional compilation book) - ePESSTO+ Transient Classification Report for 2025-04-16 #2025-1403 (2025) Transient name server Classification report Humina, Christina.; Pyykkinen, Niko.; Kravtsov, Timo.; Horowicz, A.
(D2 Article in a professional compilation book) - GRB 250502A: NOT optical observations #40334 (2025) GCN circular Corcoran, G.; Malesani, D. B.; Martin-Carrillo, A.; de Ugarte Postigo, A.; Xu, D.; Saccardi, A.; Pyykkinen, N.
(D2 Article in a professional compilation book) - GRB 250713A: NOT optical upper limits #41091 (2025) GCN circular Saccardi, A.; Martin-Carrillo, A.; Malesani, D. B.; de Ugarte Postigo, A.; Corcoran, G.; Palmerio, J. T.; Izzo, L.; Gompertz, B. P.; Pyykkinen, N.; Valeckas, K.
(D2 Article in a professional compilation book) - NUTS2 Transient Classification Report for 2025-11-01 #4403 (2025) Transient Name Server Classification Report Stritzinger, M.; Pyykkinen, N.; Bose, S.; Xiao, H.; Morrell, N.; Burns, C.; Hsiao, E.
(D2 Article in a professional compilation book) - Spectroscopic classification of a supernova #2025-62 (2025) Transient name server: AstroNote Pyykkinen, N.; Henderson, A.; Rasmussen, R.; Kuncarayakti, H.; Nagao, T.
(D2 Article in a professional compilation book) - Transient Classification Report for 2025-10-12 #4090 (2025) Transient Name Server Classification report Pyykkinen, N.; Holmberg, R.
(D2 Article in a professional compilation book) - Transient Classification Report for 2025-10-13 #4108 (2025) Transient Name Server Classification report Pyykkinen, N.; Holmberg, R.; Kuncarayakti, H.
(D2 Article in a professional compilation book) - Transient Classification Report for 2025-10-14 #4121 (2025) Transient Name Server Classification report Pyykkinen, N.; Valeckas, K.; Kuncarayakti, H.
(D2 Article in a professional compilation book) - Transient Classification Report for 2025-11-16 #4612 (2025) Transient Name Server Classification Report Pyykkinen, N.; Kadela, A.; Kuncarayakti, H.; Ramsay, G.; Wiersema, K.; Steeghs, D.
(D2 Article in a professional compilation book) - Transient Classification Report for 2025-11-20 #4664 (2025) Transient Name Server Classification Report Pyykkinen, N.; Nagao, T.; Kuncarayakti, H.
(D2 Article in a professional compilation book) - ePESSTO+ spectroscopic classification of optical transients #2024-293 (2024) Transient name server: AstroNote Humina, C.; Kravtsov, T.; Vassallo, C.; Pyykkinen, N.; Koivisto, N.; Hu, Y.; Reguitti, A.; Gkini, A.; Sollerman, J.; Anderson, J.; Chen, T. W.; Gromadzki, M.; Inserra, C.; Kankare, E.; Bravo, T. M.; Nicholl, M.; Yaron, O.; Young, D.; Zimmerman, E.; Tonry, J.; Denneau, L.; Weiland, H.; Lawrence, A.; Siverd, R.; Erasmus, N.; Koorts, W.; Jordan, A.; Suc, V.; Smartt, S. J.; Smith, K. W.; Srivastav, S.; Young, D. R.; Fulton, M.; McCollum, M.; Moore, T.; Nicholl, M.; Weston, J.; Shingles, L.; Rhodes, L.; Sommer, J.; Rest, A.; Chen, T. W.; Stubbs, C.
(D2 Article in a professional compilation book) - ePESSTO+ spectroscopic classification of optical transients #2024-297 (2024) Transient name server: AstroNote Kravtsov, T.; Humina, C.; Koivisto, N.; Vassallo, C.; Pyykkinen, N.; Hu, Y.; Reguitti, A.; Gkini, A.; Zimmerman, E.; Valerin, G.; Anderson, J.; Chen, T. W.; Gromadzki, M.; Inserra, C.; Kankare, E.; Bravo, T. M.; Nicholl, M.; Yaron, O.; Young, D.; Tonry, J.; Denneau, L.; Weiland, H.; Lawrence, A.; Siverd, R.; Erasmus, N.; Koorts, W.; Jordan, A.; Suc, V.; Smartt, S. J.; Smith, K. W.; Srivastav, S.; Young, D. R.; Fulton, M.; McCollum, M.; Moore, T.; Nicholl, M.; Weston, J.; Shingles, L.; Rhodes, L.; Sommer, J.; Rest, A.; Chen, T. W.; Stubbs, C.
(D2 Article in a professional compilation book) - Transient Classification Report for 2022-11-10 #2022-3265 (2022) Transient Name Server Classification Report Pyykkinen N, Fardella V, Rikala M, Toppari E, Gupta S, Moran S, Gutiérrez C, Kangas T, Wlliams S, Kankare E, Mattila S
(D2 Article in a professional compilation book) - Transient Classification Report for 2022-11-10 #2022-3266 (2022) Transient Name Server Classification Report Fardella V, Pyykkinen N, Rikala M, Toppari E, Gupta S, Moran S, Gutiérrez C, Kangas T, Wlliams S, Kankare E, Mattila S
(D2 Article in a professional compilation book)
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