E. Valtaoja

4.5k total citations
104 papers, 2.0k citations indexed

About

E. Valtaoja is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Computational Mechanics. According to data from OpenAlex, E. Valtaoja has authored 104 papers receiving a total of 2.0k indexed citations (citations by other indexed papers that have themselves been cited), including 91 papers in Astronomy and Astrophysics, 76 papers in Nuclear and High Energy Physics and 15 papers in Computational Mechanics. Recurrent topics in E. Valtaoja's work include Astrophysics and Cosmic Phenomena (76 papers), Radio Astronomy Observations and Technology (58 papers) and Gamma-ray bursts and supernovae (23 papers). E. Valtaoja is often cited by papers focused on Astrophysics and Cosmic Phenomena (76 papers), Radio Astronomy Observations and Technology (58 papers) and Gamma-ray bursts and supernovae (23 papers). E. Valtaoja collaborates with scholars based in Finland, United States and Russia. E. Valtaoja's co-authors include M. Tornikoski, A. Lähteenmäki, T. Hovatta, H. Teräsranta, M. Lainela, K. Wiik, E. Nieppola, M. F. Aller, H. D. Aller and T. Savolainen and has published in prestigious journals such as Nature, The Astrophysical Journal and Monthly Notices of the Royal Astronomical Society.

In The Last Decade

E. Valtaoja

91 papers receiving 1.9k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
E. Valtaoja Finland	24	1.9k	1.8k	56	54	28	104	2.0k
R. C. Vermeulen United States	20	1.7k 0.9×	1.5k 0.9×	33 0.6×	51 0.9×	19 0.7×	35	1.8k
M. Tornikoski Finland	28	2.2k 1.2×	2.1k 1.2×	68 1.2×	83 1.5×	32 1.1×	126	2.4k
T. Hovatta Finland	27	2.1k 1.1×	2.0k 1.2×	54 1.0×	42 0.8×	31 1.1×	92	2.2k
M. Kadler Germany	23	2.0k 1.1×	1.9k 1.1×	28 0.5×	42 0.8×	23 0.8×	89	2.1k
A. Lähteenmäki Finland	23	1.7k 0.9×	1.6k 0.9×	39 0.7×	43 0.8×	34 1.2×	85	1.8k
H. Teräsranta Finland	18	927 0.5×	816 0.5×	25 0.4×	30 0.6×	14 0.5×	59	984
J. H. Fan China	20	1.1k 0.6×	1.2k 0.7×	30 0.5×	19 0.4×	19 0.7×	147	1.3k
Ruth A. Daly United States	20	1.5k 0.8×	1.2k 0.7×	19 0.3×	13 0.2×	10 0.4×	52	1.6k
R. Scarpa Italy	24	1.5k 0.8×	1.2k 0.7×	35 0.6×	17 0.3×	16 0.6×	79	1.6k
R. Kothes Canada	19	1.3k 0.7×	909 0.5×	16 0.3×	26 0.5×	32 1.1×	74	1.4k

Countries citing papers authored by E. Valtaoja

Since Specialization

Citations

This map shows the geographic impact of E. Valtaoja's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by E. Valtaoja with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites E. Valtaoja more than expected).

Fields of papers citing papers by E. Valtaoja

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by E. Valtaoja. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by E. Valtaoja. The network helps show where E. Valtaoja may publish in the future.

Co-authorship network of co-authors of E. Valtaoja

This figure shows the co-authorship network connecting the top 25 collaborators of E. Valtaoja. A scholar is included among the top collaborators of E. Valtaoja based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with E. Valtaoja. E. Valtaoja is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Hovatta, T., E. Nieppola, M. Tornikoski, et al.. (2008). Long-term radio variability of AGN: flare characteristics. Springer Link (Chiba Institute of Technology). 37 indexed citations

Valtaoja, E., E. Lindfors, T. Hovatta, et al.. (2008). Hydrodynamics of Small-Scale Jets: Observational Aspects. ASPC. 386. 388. 1 indexed citations

Hovatta, T., E. Valtaoja, M. Tornikoski, & A. Lähteenmäki. (2008). Doppler factors, Lorentz factors and viewing angles for quasars, BL Lacertae objects and radio galaxies. Springer Link (Chiba Institute of Technology). 185 indexed citations

Lindfors, E., M. Türler, Diana Hannikainen, et al.. (2007). Synchrotron flaring behaviour of Cygnus X-3 during the February-March 1994 and September 2001 outbursts. Astronomy and Astrophysics. 473(3). 923–929. 15 indexed citations

Hovatta, T., M. Tornikoski, M. Lainela, et al.. (2007). Statistical analyses of long-term variability of AGN at high radio frequencies. Astronomy and Astrophysics. 469(3). 899–912. 56 indexed citations

Savolainen, T., K. Wiik, E. Valtaoja, & M. Tornikoski. (2006). Multifrequency VLBA monitoring of 3C 273 during the INTEGRAL Campaign in 2003. Astronomy and Astrophysics. 446(1). 71–85. 43 indexed citations

Valtaoja, E., et al.. (2003). High Energy Blazar Astronomy. ASPC. 299. 18 indexed citations

Valtaoja, E., et al.. (2003). A comparison between the CaII(k${\mathsf{_3}}$), H$_{\mathsf{\alpha}}$, SOHO/MDI and radio-enhanced temperature regions of the Sun. Astronomy and Astrophysics. 402(3). 1103–1113. 3 indexed citations

Savolainen, T., K. Wiik, E. Valtaoja, S. G. Jorstad, & Alan P. Marscher. (2002). Connections between millimetre continuum variations and VLBI structure in 27 AGN. Astronomy and Astrophysics. 394(3). 851–861. 53 indexed citations

10.

Hanski, M., L. O. Takalo, & E. Valtaoja. (2002). Correlated radio and optical variations in a sample of AGN. Astronomy and Astrophysics. 394(1). 17–31. 20 indexed citations

11.

Urpo, S., et al.. (2001). Millimeter-radio, SOHO/EIT 171 Å features and the polar faculae in the polar zones of the Sun. Astronomy and Astrophysics. 366(2). 676–685. 22 indexed citations

12.

Wiik, K. & E. Valtaoja. (2001). The geometry of the universe from high resolution VLBI data of AGN shocks. Astronomy and Astrophysics. 366(3). 1061–1064. 5 indexed citations

13.

Wiik, K., E. Valtaoja, & Kari Leppänen. (2001). VLBI monitoring of a sample of 15 AGN at 22 GHz. Astronomy and Astrophysics. 380(1). 72–80. 6 indexed citations

14.

Pohjolainen, S., et al.. (1999). Polar Radio Sources Observed in UV and EUV. ESASP. 9. 635. 1 indexed citations

15.

Valtaoja, E., et al.. (1999). Total Flux Density Variations in Extragalactic Radio Sources. NASA STI/Recon Technical Report N. 99. 41792. 6 indexed citations

16.

Valtaoja, E., et al.. (1996). The relationsship between gamma emission and radio flares in AGN. Astronomy & Astrophysics Supplement Series. 120. 491–494. 1 indexed citations

17.

Valtaoja, E. & H. Teräsranta. (1995). Gamma radiation from radio shocks in AGN jets.. A&A. 297. 1 indexed citations

18.

Valtaoja, E., A. Lähteenmäki, & H. Teräsranta. (1992). A northern 2 Jy sample of compact extragalactic radio sources suitable for millimeter and space VLBI observations. Astronomy & Astrophysics Supplement Series. 95(1). 73–85.

19.

Salonen, E., H. Teräsranta, S. Urpo, et al.. (1987). Five years monitoring of extragalactic radio sources. I. Observations at 12,22 and 37 GHz.. 70. 409–435. 1 indexed citations

20.

Valtaoja, E.. (1982). Diffusion of electrons in radio galaxies.. A&A. 111. 213–219. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact