Publications in main journals

Olspert N., Lehtinen J., Käpylä M.J., Pelt J., Grigorievskiy A., Estimating activity cycles with probabilistic methods II. The Mount Wilson Ca H&K data , Astronomy & Astrophysics, 619, A6, pp. 1−20, 2018

Olspert N., Pelt J., Käpylä M.J., Lehtinen J., Estimating activity cycles with probabilistic methods I. Bayesian generalised Lomb-Scargle periodogram with trend , Astronomy & Astrophysics, 615, A111, pp. 1−12, 2018

Pelt,J.,Käpylä M.J.,Olspert N., Method of frequency dependent correlations: investigating the variability of total solar irradiance, Astronomy and Astrophysics,600, A9, pp.1-19, 2017.

Hirv, A., Pelt, J., Saar, E., Tago, E., Tamm, A., Tempel, E., Einasto, M.,
Alignment of galaxies relative to their local environment in SDSS-DR8 ,
Astronomy and Astrophysics,599, A31, pp.1-15, 2017.

Peets P., Leito I., Pelt, J. , Vahur, S., Identification and classification of textile fibres using ATR-FT-IR spectroscopy with chemometric methods.
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 173, pp. 175-181, 2017.

Käpylä M.J., Käpylä P.J., Olspert N., Brandenburg A., Warnecke J., Karak B.B., Pelt J.,
Multiple dynamo modes as a mechanism for long-term solar activity variations, Astronomy and Astrophysics, 589,A56, pp. 1-24, 2016.

Kilpua E.K.J.,Olspert N., Grigorievskiy A., Käpyla M.J., Tanskanen E., Miyahara H., Kataoka R., Pelt J., Liu Y.D., Statistical study of strong and extreme geomagnetic disturbances and solar cycle characteristics,
Astrophysical Journal,806,272, pp. 1-7, 2015.

Olspert N.,Käpylä M.J., Pelt,J., Cole E.M, Hackman T., Lehtinen J., Henry,G.W.,Multiperiodicity, modulations and flip-flops in variable star light curves.III. Carrier fit analysis of LQ Hya photometry for 1982-2014, Astronomy and Astrophysics, 577,A120, pp.1-13, 2015.

Karak, B.B., Käpylä P.J., Käpylä M.J., Brandenburg A., Olspert N., Pelt, J.,
Magnetically controlled stellar differential rotation near the transition from solar to anti-solar profiles,
Astronomy and Astrophysics,576, A26, pp.1-17, 2015.

Tempel E., Kipper R., Saar E., Bussov M., Hektor A., Pelt, J.,
Galaxy filaments as pearl necklaces, Astronomy and Astrophysics, 572,A8,
ADS , pp. 1-8, 2014.

Lindborg M., Mantere M.J., Olspert N., Pelt J., Hackman T., Henry G.W., Jetsu L., Strassmeier K.G., Multiperiodicity, modulations and flip-flops in variable star light curves II. Analysis of II Pegasus photometry during 1979-2010,
Astronomy and Astrophysics ,559, A97, 1-10, ADS , 2013.

Hackman T., Pelt J., Mantere M.J., Jetsu L., Korhonen H., Granzer, T., Kajatkari, P., Lehtinen, J., Strassmeier K.G, Flip-flops of FK Comae Berenices, Astronomy and Astrophysics 553,A40, pp. 1-13,
ADS, 2013.

Pelt J., Olspert N., Mantere M.J., Tuominen I., Multiperiodicity, modulations and flip-flops in variable star light curves I. Carrier fit method, Astronomy and Astrophysics, 535, A23, pp. 1-12,
ADS, 2011.

Hirv A., Olspert N.,Pelt J., Towards the automatic estimation of gravitational lenses’ time delays, Baltic Astronomy, 20, pp. 125-144, ADS, 2011

Pelt J., Korpi M.J., Tuominen I., Solar active regions: a nonparametric statistical analysis, Astronomy and Astrophysics, 513, A48, pp. 1-7,
ADS, 2010

Pelt J., High frequency limits in periodicity search from irregularly spaced data,Baltic Astronomy, 18,pp. 83-92,
ADS, 2009.

Tuominen I.,Pelt J., Brooke J.M., Korpi M.J.,Does the Sun have a face?,
Astronomische Nachrichten, 328, pp. 1020-1022, ADS,2007.

Hirv A., Eenmäe T.,Liivamägi L.J., Pelt J.,Estimation of time delays from two blended light curves of gravitational lenses,
Baltic Astronomy,16,pp.241-250, ADS, 2007.

Hirv A., Eenmäe T., Liimets Tiina, Liivamägi L.J., Pelt J.,Estimation of time delays from unresolved photometry,
Astronomy and Astrophysics, 464 , pp. 471-478,ADS, 2007.

Pelt J., Brooke J.M., Korpi M.J., Tuominen I., Kinematic frames and “active longitudes”: does the Sun have a face?,
Astronomy and Astrophysics, 460 , pp. 875-885, ADS, 2006.

Hirv A., Annuk K., Eenmäe T., Liimets T., Pelt J, Puss A., Tempel M.,Orbital elements and mass-loss rate of V444 Cygni,
Baltic Astronomy, 16 , pp. 405-412,ADS, 2006.

Tõnsuaadu K., Pelt J., Borissova M., Monitoring of the Evolved Gases in Apatite – Ammonium
Sulfate Thermal Reactions, Journal of Thermal Analysis and Calorimetry, 80, pp. 655-658, 2005.

Pelt J., Tuominen I., Brooke J.,Century-scale persistence in longitude distribution in the Sun and in silico,
Astronomy and Astrophysics, 429, pp. 1093-1096, ADS, 2005.

Tõnsuaadu K., Borissova M., Bender V., Pelt J., Thermal Reactions in Synthetic Apatite – Ammonium
Sulfate Mixture, Phosphorus, Sulfur, and Silicon and the Related Elements, 179, pp. 2395-2407, 2004.

Kaljuvee T., Pelt J., Radin M., TG-FTIR study of gaseous compounds evolved at thermooxidation of oil shale, Journal of Thermal Analysis and Calorimetry, 78, pp. 399-414, 2004.

Berdyugina S.V., Pelt J., Tuominen I., Magentic activity in the
young solar analog LQ Hydrae – I. Active longitude cycles,
Astronomy and Astrophysics,394, pp. 505-515, ADS, 2002.

Brooke J., Pelt J.,Pulkkinen P., Tuominen I., The importance of
spatial information in sunspot records, in Highlights of Astronomy,
Vol. 12, Ed. by H. Rickman, Astronomical Society of Pacific, 2002, pp.
334-227

Pelt J., Refsdal S., Stabell R.,
Bias and consistency in time delay estimation methods:
case of double quasar HE 1104-1805, Astronomy and Astrophysics,
389, pp. L57-L60, ADS, 2002.

Hjorth J., Burud I., Jaunsen A.O., Schechter P.L.,
Kneib J.-P., Andersen M.I., Korhonen H., Clasen J.W.,
Kaas A.A., Ostensen R., Pelt J., and P. Pijpers,
The time delay of the quasar RX J0911.4+0551, Astrophysical Journal
Letters, 572, pp. L11-L14, ADS, 2002.

Petrov P.P., Pelt J., Tuominen I.,
Periodic variations in the colours of the classical T Tauri star RW Aur A,
Astronomy and Astrophysics, 375, pp. 977-981,ADS, 2001.

Burud I., Hjorth J., Jaunsen A.O., Andersen M.I.,
Korhonen H., Clasen J.W., Pelt J., Pijpers P., Magain P.,
Ostensen R., An optical time delay estimate for the
double gravitational lens system B1600+434, Astrophysical Journal,
544, pp. 117-122, ADS, 2000.

Pelt J., Brooke J., Pulkkinen P.J., Tuominen I.,
A new interpretation of the Solar magnetic cycle, Astronomy and
Astrophysics, 362, pp. 1143-1150, ADS, 2000.

You J., Pelt J., Tuominen I., Period analysis for
simultaneous multichannel photometric observations, Astronomy and
Astrophysics
Supplement, 146 , pp. 397-406,ADS, 2000.

Refsdal S., Stabell R., Pelt J., Schild R.,
Constraints on source and lens parameters from microlensing
variability in QSO 0957+561 A,B, Astronomy and Astrophysics,
360, pp. 10-14, ADS, 2000.

Jetsu L., Pelt J., Spurious periods in the terrestial impact
crater record, Astronomy and Astrophysics, 353, pp. 409-418, ADS, 2000.

Jetsu L., Pelt J., Three stage period analysis and complementary
methods, Astronomy and Astrophysics Supplement, 139, pp. 629-643,ADS,
1999.

Jetsu L., Pelt J., Tuominen I., Time series analysis of V 1794
Cygni long-term photometry, Astronomy and Astrophysics, 351,
pp. 212-224, ADS, 1999.

Pulkkinen P. J., Brooke J., Pelt J., Tuominen I., North-South
asymmetry of sunspot latitudes, Astronomy and Astrophysics, 337,
pp. L43-L46, ADS, 1999.

Pelt J., Hjorth J., Refsdal S., Schild R., Stabell R., Estimation of
multiple time delays in complex gravitational lens systems,
in multiple systems, Astronomy and Astrophysics, 337, pp. 681-684,ADS,
1998.

Pelt J., Schild R., Refsdal S., Stabell R., Microlensing on different
timescales in the lightcurves of QSO 0957+561 A,B, Astronomy and
Astrophysics, 336, pp. 829-839, ADS, 1998.

Brooke J.M., Pelt J., Tavakol R.K., Tworkowski A.S., Grand minima
and equatorial symmetry breaking in axisymmetric dynamo models,
Astronomy and Astrophysics, 332, 1998, pp.339-352, ADS, 1998.

Duemmler R., Pelt J., Korhonen H., Iliev I., Is Beta Crateris a Sirius-like system?, 1997, Astronomy and Astrophysics, 328, L37-L39,
ADS, 1997.

Jetsu L., Pohjolainen S., Pelt J., Tuominen I., Is the longitudinal
distribution of solar flares nonuniform?,
Astronomy and Astrophysics, 318, pp.293-307, ADS, 1997.

Jetsu L., Pelt J., Searching for periodicity in weighted time point series,
Astronomy and Astrophysics Supplement, 118, pp.587-594, ADS, 1996.

Pelt J., Kayser R., Refsdal S., Schramm T., The light curve and time
delay of QSO 0957+561, Astronomy and Astrophysics, 305, pp.97-106, ADS, 1996 .

Pelt J., Hoff W., Kayser R., Refsdal S., Schramm T., Time delay controversy on QSO 0957+561 A,B not yet decided, Astronomy and Astrophysics, 286, pp.775-785, ADS, 1994 .

Jetsu L.,Pelt J.,Tuominen I., Spot and flare activity of FK
Comae Berenices: long term photometry,
Astronomy and Astrophysics, 278, pp.449-462, ADS, 1993.

Schramm K.-J., Borgeest U., Camenzind M., Wagner S.J., Bade N.,
Dreissigacker O., Heidt J., Hoff W., Kayser R., K\”uhl D.,
Linde J. v., Linnert M.D., Pelt J., Schramm T., Vigotti M., Again
an active period in the optical light curve of the blazar 3C345:
a ”lighthouse effect” due to helical motion in the jet?
Astronomy and Astrophysics 278, pp.391-405, ADS, 1993 .

Malyuto V.,Pelt J.,Shvelidze T., The spectrophotometric data
reduction software package for automated quantitative spectral classification of stars, Baltic Astronomy,1, pp.526-544, ADS, 1992 .