I. Lehmann

2.9k total citations
42 papers, 1.6k citations indexed

About

I. Lehmann is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Instrumentation. According to data from OpenAlex, I. Lehmann has authored 42 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 40 papers in Astronomy and Astrophysics, 10 papers in Nuclear and High Energy Physics and 5 papers in Instrumentation. Recurrent topics in I. Lehmann's work include Astrophysical Phenomena and Observations (33 papers), Galaxies: Formation, Evolution, Phenomena (29 papers) and Gamma-ray bursts and supernovae (13 papers). I. Lehmann is often cited by papers focused on Astrophysical Phenomena and Observations (33 papers), Galaxies: Formation, Evolution, Phenomena (29 papers) and Gamma-ray bursts and supernovae (13 papers). I. Lehmann collaborates with scholars based in Germany, United States and Italy. I. Lehmann's co-authors include G. Hasinger, G. Szokoly, V. Mainieri, Maarten Schmidt, P. Rosati, J. Bergeron, R. Della Ceca, R. Giacconi, G. Zamorani and J. Trümper and has published in prestigious journals such as Nature, The Astrophysical Journal and Monthly Notices of the Royal Astronomical Society.

In The Last Decade

I. Lehmann

40 papers receiving 1.6k citations

Peers

Countries citing papers authored by I. Lehmann

Since Specialization

Citations

This map shows the geographic impact of I. Lehmann'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 I. Lehmann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites I. Lehmann more than expected).

Fields of papers citing papers by I. Lehmann

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by I. Lehmann. 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 I. Lehmann. The network helps show where I. Lehmann may publish in the future.

Co-authorship network of co-authors of I. Lehmann

This figure shows the co-authorship network connecting the top 25 collaborators of I. Lehmann. A scholar is included among the top collaborators of I. Lehmann 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 I. Lehmann. I. Lehmann is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Chandra Observations of Six QSOs at z ≈ 3 1 2005 ·Max Planck Digital Library ·T. Miyaji, G. Hasinger, I. Lehmann, Donald P. Schneider	4
2	TheChandradeep field South/GOODS survey 2005 ·Astronomy and Astrophysics ·V. Mainieri, P. Rosati, P. Tozzi, J. Bergeron, R. Gilli, G. Hasinger, M. Nonino, I. Lehmann, D. M. Alexander, R. Idzi, Anton M. Koekemoer, Colin Norman, G. Szokoly, Wei Zheng	32
3	XMM-Newton observations of the Lockman Hole IV: spectraof the brightest AGN 2005 ·Astronomy and Astrophysics ·S. Mateos, X. Barcons, F. J. Carrera, M. T. Ceballos, G. Hasinger, I. Lehmann, A. C. Fabian, A. Streblyanska	55
4	Integral field spectroscopy of the ultraluminous X-ray source Holmberg II X-1 2005 ·Astronomy and Astrophysics ·I. Lehmann, T. Becker, S. Fabrika, Martin M. Roth, T. Miyaji, V. L. Afanasiev, O. Sholukhova, S. F. Sánchez, J. Greiner, G. Hasinger, E. Costantini, (unknown), А. Н. Буренков	39
5	Exploring the X-ray sky with the\nXMM-Newton bright serendipitous survey \n 2004 ·Springer Link (Chiba Institute of Technology) ·R. Della Ceca, T. Maccacaro, A. Caccianiga, P. Severgnini, V. Braito, X. Barcons, F. J. Carrera, M. G. Watson, Jonathan Tedds, H. Brunner, I. Lehmann, K. L. Page, G. Lamer, A. Schwope	67
6	The XMM-NewtonHBS28 sample: Studying the obscuration in hard X-ray selected AGNs 2004 ·Astronomy and Astrophysics ·A. Caccianiga, P. Severgnini, V. Braito, R. Della Ceca, T. Maccacaro, A. Wolter, X. Barcons, F. J. Carrera, I. Lehmann, K. L. Page, R. D. Saxton, N. A. Webb	59
7	The Chandra Deep Field–South: Optical Spectroscopy. I. 2004 ·The Astrophysical Journal Supplement Series ·G. Szokoly, J. Bergeron, G. Hasinger, I. Lehmann, Lisa J. Kewley, V. Mainieri, M. Nonino, P. Rosati, R. Giacconi, R. Gilli, R. Gilmozzi, Colin Norman, M. Romaniello, E. Schreier, P. Tozzi, Junxian Wang, Wei Zheng, A. Zirm	302
8	A Transition to a Low/Soft State in the Ultraluminous Compact X-Ray Source Holmberg II X-1 2004 ·The Astrophysical Journal ·G. C. Dewangan, T. Miyaji, R. E. Griffiths, I. Lehmann	42
9	A deep VLA survey at 6 cm in the Lockman Hole 2003 ·Springer Link (Chiba Institute of Technology) ·P. Ciliegi, G. Zamorani, G. Hasinger, I. Lehmann, G. Szokoly, Gillian Wilson	68
10	XMM-Newtonobservation of the ULIRG NGC 6240 2003 ·Astronomy and Astrophysics ·Thomas Böller, R. Keil, G. Hasinger, E. Costantini, Ryuichi Fujimoto, Naohisa Anabuki, I. Lehmann, Luigi Gallo	20
11	The nature of X-ray selected extremely red objects 2003 ·Monthly Notices of the Royal Astronomical Society ·J. A. Stevens, M. J. Page, R. J. Ivison, Ian Smail, I. Lehmann, G. Hasinger, G. Szokoly	12
12	1ES 1927+654: Persistent and rapid X-ray variability in an AGN with low intrinsic neutral X-ray absorption and narrow optical emission lines 2002 ·Astronomy and Astrophysics ·Thomas Böller, W. Voges, M. Dennefeld, I. Lehmann, P. Predehl, V. Burwitz, Eric S. Perlman, Luigi Gallo, I. E. Papadakis, Scott F. Anderson	17
13	XMM-Newton observation of the Lockman Hole 2002 ·Astronomy and Astrophysics ·V. Mainieri, J. Bergeron, G. Hasinger, I. Lehmann, P. Rosati, Maarten Schmidt, G. Szokoly, R. Della Ceca	123
14	ASCA Deep survey in Lockman Hole Field 2001 ·OpenGrey (Institut de l'Information Scientifique et Technique) ·Yoshitaka Ishisaki, Yoshihiro Ueda, (unknown), Takaya Ohashi, I. Lehmann, G. Hasinger	1
15	The ROSAT Deep Survey 2001 ·Astronomy and Astrophysics ·I. Lehmann, G. Hasinger, Maarten Schmidt, R. Giacconi, J. Trümper, G. Zamorani, James E. Gunn, L. Pozzetti, Donald P. Schneider, Thomas Stanke, G. Szokoly, D. J. Thompson, Gillian Wilson	100
16	Spectroscopic distance estimates for fourteen faint red LHS and NLTT stars 2001 ·Astronomy and Astrophysics ·H. Jahreiß, R.‐D. Scholz, H. Meusinger, I. Lehmann	11
17	The ROSAT deep survey 2001 ·Astronomy and Astrophysics ·D. J. Thompson, L. Pozzetti, G. Hasinger, I. Lehmann, Maarten Schmidt, B. T. Soifer, G. Szokoly, Gillian Wilson, G. Zamorani	13
18	Optical Identification of theASCALarge Sky Survey 2000 ·The Astrophysical Journal ·Masayuki Akiyama, Kouji Ohta, Tōru Yamada, Nobunari Kashikawa, Masafumi Yagi, Wataru Kawasaki, Masaaki Sakano, Takeshi Go Tsuru, Yoshihiro Ueda, Tadayuki Takahashi, I. Lehmann, G. Hasinger, W. Voges	86
19	Spatial corrections of ROSAT HRI observations 1998 ·Springer Link (Chiba Institute of Technology) ·D. E. Harris, J. D. Silverman, G. Hasinger, I. Lehmann	13
20	The ROSAT Deep Survey 1998 ·Maarten Schmidt, G. Hasinger, James E. Gunn, Donald P. Schneider, R. Burg, R. Giacconi, I. Lehmann, John MacKenty, J. Truêmper, G. Zamorani	5

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.

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