Publications of T. Chatzistergos ordered by citations

A list of publications authored or co-authored by T. Chatzistergos, derived from the SAO/NASA Astrophysics Data System (ADS) and ordered by the numbers of citations. Publications above the horizontal line count towards the h-index.

Orcid ID: 0000-0002-0335-9831

72	New reconstruction of the sunspot group numbers since 1739 using direct calibration and "backbone" methods Chatzistergos, Theodosios, Usoskin, Ilya G., Kovaltsov, Gennady A., Krivova, Natalie A. & Solanki, Sami K., 2017, A&A, 602, A69
46	Analysis of full disc Ca II K spectroheliograms. II. Towards an accurate assessment of long-term variations in plage areas Chatzistergos, Theodosios, Ermolli, Ilaria, Krivova, Natalie A. & Solanki, Sami K., 2019, A&A, 625, A69
42	Recalibration of the Sunspot-Number: Status Report Clette, F., Lefèvre, L., Chatzistergos, T., Hayakawa, H., Carrasco, V. M. S., Arlt, R., Cliver, E. W., Dudok de Wit, T., Friedli, T. K., Karachik, N., Kopp, G., Lockwood, M., Mathieu, S., Muñoz-Jaramillo, A., Owens, M., Pesnell, D., Pevtsov, A., Svalgaard, L., Usoskin, I. G., van Driel-Gesztelyi, L. & Vaquero, J. M., 2023, Solar Physics, 298, 44
36	Analysis of full-disc Ca II K spectroheliograms. III. Plage area composite series covering 1892-2019 Chatzistergos, Theodosios, Ermolli, Ilaria, Krivova, Natalie A., Solanki, Sami K., Banerjee, Dipankar, Barata, Teresa, Belik, Marcel, Gafeira, Ricardo, Garcia, Adriana, Hanaoka, Yoichiro, Hegde, Manjunath, Klimeš, Jan, Korokhin, Viktor V., Lourenço, Ana, Malherbe, Jean-Marie, Marchenko, Gennady P., Peixinho, Nuno, Sakurai, Takashi & Tlatov, Andrey G., 2020, A&A, 639, A88
31	Analysis of full disc Ca II K spectroheliograms. I. Photometric calibration and centre-to-limb variation compensation Chatzistergos, Theodosios, Ermolli, Ilaria, Solanki, Sami K. & Krivova, Natalie A., 2018, A&A, 609, A92
30	Recovering the unsigned photospheric magnetic field from Ca II K observations Chatzistergos, Theodosios, Ermolli, Ilaria, Solanki, Sami K., Krivova, Natalie A., Giorgi, Fabrizio & Yeo, Kok Leng, 2019, A&A, 626, A114
30	Modelling a multi-spacecraft coronal mass ejection encounter with EUHFORIA Asvestari, E., Pomoell, J., Kilpua, E., Good, S., Chatzistergos, T., Temmer, M., Palmerio, E., Poedts, S. & Magdalenic, J., 2021, A&A, 652, A27
19	Modelling solar irradiance from ground-based photometric observations Chatzistergos, Theodosios, Ermolli, Ilaria, Giorgi, Fabrizio, Krivova, Natalie A. & Puiu, Cosmin Constantin, 2020, Journal of Space Weather and Space Climate, 10, 45
18	Reconstructing solar irradiance from historical Ca II K observations. I. Method and its validation Chatzistergos, Theodosios, Krivova, Natalie A., Ermolli, Ilaria, Yeo, Kok Leng, Mandal, Sudip, Solanki, Sami K., Kopp, Greg & Malherbe, Jean-Marie, 2021, A&A, 656, A104
18	Delving into the Historical Ca II K Archive from the Kodaikanal Observatory: The Potential of the Most Recent Digitized Series Chatzistergos, Theodosios, Ermolli, Ilaria, Solanki, Sami K., Krivova, Natalie A., Banerjee, Dipankar, Jha, Bibhuti K. & Chatterjee, Subhamoy, 2019, Solar Physics, 294, 145
18	Dependence of the Sunspot-Group Size on the Level of Solar Activity and its Influence on the Calibration of Solar Observers Usoskin, I. G., Kovaltsov, G. A. & Chatzistergos, T., 2016, Solar Physics, 291, 3793
17	Long-term changes in solar activity and irradiance Chatzistergos, Theodosios, Krivova, Natalie A. & Yeo, Kok Leng, 2023, Journal of Atmospheric and Solar-Terrestrial Physics, 252, 106150
16	Full-disc Ca ii K observations—A window to past solar magnetism Chatzistergos, Theodosios, Krivova, Natalie A. & Ermolli, Ilaria, 2022, Frontiers in Astronomy and Space Sciences, 9, 336
16	Modeling Stellar Ca II H and K Emission Variations. I. Effect of Inclination on the S-index Sowmya, K., Shapiro, A. I., Witzke, V., Nèmec, N. -E., Chatzistergos, T., Yeo, K. L., Krivova, N. A. & Solanki, S. K., 2021, ApJ, 914, 21
15	Exploiting Four Historical Ca II K Spectroheliogram Archives Chatzistergos, T., Ermolli, I., Solanki, S. K. & Krivova, N. A., 2016, Coimbra Solar Physics Meeting: Ground-based Solar Observations in the Space Instrumentation Era (Editors: Dorotovic, I., Fischer, C. E. & Temmer, M.), Astronomical Society of the Pacific Conference Series, 504, p. 227
14	Ca II K spectroheliograms for studies of long-term changes in solar irradiance Chatzistergos, Theodosios, Ermolli, Ilaria, Krivova, Natalie A. & Solanki, Sami K., 2018, Long-term Datasets for the Understanding of Solar and Stellar Magnetic Cycles (Editors: Banerjee, D., Jiang, J., Kusano, K. & Solanki, S.), IAU Symposium, 340, p. 125
13	Historical solar Ca II K observations at the Rome and Catania observatories Chatzistergos, T., Ermolli, I., Falco, M., Giorgi, F., Guglielmino, S. L., Krivova, N. A., Romano, P. & Solanki, S. K., 2019, Nuovo Cimento C Geophysics Space Physics C, 42, 5
13	A note on the sunspot and prominence records made by Angelo Secchi during the period 1871-1875 Carrasco, Víctor M. S., Nogales, José M., Vaquero, José M., Chatzistergos, Theodosios & Ermolli, Ilaria, 2021, Journal of Space Weather and Space Climate, 11, 51
12	The potential of Ca II K observations for solar activity and variability studies Ermolli, Ilaria, Chatzistergos, Theodosios, Krivova, Natalie A. & Solanki, Sami K., 2018, Long-term Datasets for the Understanding of Solar and Stellar Magnetic Cycles (Editors: Banerjee, D., Jiang, J., Kusano, K. & Solanki, S.), IAU Symposium, 340, p. 115
12	Scrutinising the relationship between plage areas and sunspot areas and numbers Chatzistergos, Theodosios, Ermolli, Ilaria, Krivova, Natalie A., Barata, Teresa, Carvalho, Sara & Malherbe, Jean-Marie, 2022, A&A, 667, A167
9	Historical solar Ca II K observations at the Kyoto and Sacramento Peak observatories Chatzistergos, T., Ermolli, I., Krivova, N. A. & Solanki, S. K., 2020, Journal of Physics Conference Series, Journal of Physics Conference Series, 1548, p. 012007
7	Analysis of full-disc Hα observations: Carrington maps and filament properties in 1909-2022 Chatzistergos, Theodosios, Ermolli, Ilaria, Banerjee, Dipankar, Barata, Teresa, Chouinavas, Ioannis, Falco, Mariachiara, Gafeira, Ricardo, Giorgi, Fabrizio, Hanaoka, Yoichiro, Krivova, Natalie A., Korokhin, Viktor V., Lourenço, Ana, Marchenko, Gennady P., Malherbe, Jean-Marie, Peixinho, Nuno, Romano, Paolo & Sakurai, Takashi, 2023, A&A, 680, A15
6	Rome Precision Solar Photometric Telescope: precision solar full-disk photometry during solar cycles 23–25 Ermolli, Ilaria, Giorgi, Fabrizio & Chatzistergos, Theodosios, 2022, Frontiers in Astronomy and Space Sciences, 9, 352
6	The Extreme Space Weather Event of 1872 February: Sunspots, Magnetic Disturbance, and Auroral Displays Hayakawa, Hisashi, Cliver, Edward W., Clette, Frédéric, Ebihara, Yusuke, Toriumi, Shin, Ermolli, Ilaria, Chatzistergos, Theodosios, Hattori, Kentaro, Knipp, Delores J., Blake, Séan P., Cauzzi, Gianna, Reardon, Kevin, Bourdin, Philippe-A., Just, Dorothea, Vokhmyanin, Mikhail, Matsumoto, Keitaro, Miyoshi, Yoshizumi, Ribeiro, José R., Correia, Ana P., Willis, David M., Wild, Matthew N. & Silverman, Sam M., 2023, ApJ, 959, 23
6	Solar Observations by Angelo Secchi. I. Digitization of Original Documents and Analysis of Group Numbers over the Period of 1853-1878 Ermolli, I., Chatzistergos, T., Giorgi, F., Carrasco, V. M. S., Aparicio, A. J. P. & Chinnici, I., 2023, ApJS, 269, 53
6	Is there a link between the length of the solar cycle and Earth's temperature? Chatzistergos, Theodosios, 2023, Rendiconti Lincei. Scienze Fisiche e Naturali, 34, 11
5	Differential Rotation of the Solar Chromosphere: A Century-long Perspective from Kodaikanal Solar Observatory Ca II K Data Mishra, Dibya Kirti, Routh, Srinjana, Jha, Bibhuti Kumar, Chatzistergos, Theodosios, Basu, Judhajeet, Chatterjee, Subhamoy, Banerjee, Dipankar & Ermolli, Ilaria, 2024, ApJ, 961, 40
4	Investigating the Effect of Solar Ambient and Data Characteristics on Ca II K Observations and Line Profile Measurements Murabito, M., Ermolli, I., Chatzistergos, T., Jafarzadeh, S., Giorgi, F. & Rouppe van der Voort, L., 2023, ApJ, 947, 18
4	A Discussion of Implausible Total Solar-Irradiance Variations Since 1700 Chatzistergos, Theodosios, 2024, Solar Physics, 299, 21
1	Understanding the secular variability of solar irradiance: the potential of Ca II K observations Chatzistergos, Theodosios, Krivova, Natalie A. & Ermolli, Ilaria, 2024, Journal of Space Weather and Space Climate, 14, 9
1	Rudolf Wolf to Alfred Wolfer: The Transfer of the Reference Observer in the International Sunspot Number Series (1876–1893) Bhattacharya, S., Lefèvre, L., Chatzistergos, T., Hayakawa, H. & Jansen, M., 2024, Solar Physics, 299, 45
0	Modelling Solar Ca II H&K Emission Variations Krishnamurthy, Sowmya, Shapiro, Alexander I., Witzke, Veronika, Nèmec, Nina-E., Chatzistergos, Theodosis, Yeo, Kok Leng, Krivova, Natalie A. & Solanki, Sami K., 2021, The 20.5th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS20.5), Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, p. 154
0	Understanding Solar Activity after the Maunder Minimum: Sunspot Records by Rost and Alischer Carrasco, V. M. S., Aparicio, A. J. P., Chatzistergos, T., Jamali Jaghdani, S., Hayakawa, H., Gallego, M. C. & Vaquero, J. M., 2024, ApJ, 968, 65
0	Correction to: A Discussion of Implausible Total Solar-Irradiance Variations Since 1700 Chatzistergos, Theodosios, 2024, Solar Physics, 299, 35
0	Correction to: A Discussion of Implausible Total Solar Irradiance Variations Since 1700 Chatzistergos, Theodosios, 2024, Solar Physics, 299, 59