K. Nandra

40.7k total citations · 5 hit papers
239 papers, 10.4k citations indexed

About

K. Nandra is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Instrumentation. According to data from OpenAlex, K. Nandra has authored 239 papers receiving a total of 10.4k indexed citations (citations by other indexed papers that have themselves been cited), including 220 papers in Astronomy and Astrophysics, 73 papers in Nuclear and High Energy Physics and 39 papers in Instrumentation. Recurrent topics in K. Nandra's work include Astrophysical Phenomena and Observations (197 papers), Galaxies: Formation, Evolution, Phenomena (149 papers) and Gamma-ray bursts and supernovae (62 papers). K. Nandra is often cited by papers focused on Astrophysical Phenomena and Observations (197 papers), Galaxies: Formation, Evolution, Phenomena (149 papers) and Gamma-ray bursts and supernovae (62 papers). K. Nandra collaborates with scholars based in United States, Germany and United Kingdom. K. Nandra's co-authors include T. J. Turner, I. M. George, R. F. Mushotzky, K. A. Pounds, T. Yaqoob, A. Georgakakis, A. C. Fabian, Murray Brightman, A. Merloni and M. Salvato and has published in prestigious journals such as Nature, The Astrophysical Journal and Monthly Notices of the Royal Astronomical Society.

In The Last Decade

K. Nandra

229 papers receiving 9.9k citations

Hit Papers

align trajectories sort by overperformance

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

X-ray spectral modelling of the AGN obscuring region in the CDFS: Bayesian model selection and catalogue

2014 916 citations Johannes Büchner, A. Georgakakis et al. Astronomy and Astrophysics profile →
Gravitationally redshifted emission implying an accretion disk and massive black hole in the active galaxy MCG–6–30–15

1995 598 citations K. Nandra et al. profile →
Ginga observations of the X-ray spectra of Seyfert galaxies

1994 472 citations K. Nandra et al. profile →
An XMM-Newton survey of broad iron lines in Seyfert galaxies

2007 357 citations K. Nandra, J. N. Reeves et al. profile →
The evolution of the X-ray luminosity functions of unabsorbed and absorbed AGNs out to z∼ 5

2015 233 citations James Aird, Alison L. Coil et al. profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author						Papers	Cites
K. Nandra	10.0k	3.7k	1.3k	517	512	239	10.4k
R. F. Mushotzky	14.5k 1.4×	5.9k 1.6×	1.6k 1.3×	554 1.1×	366 0.7×	396	14.9k
G. P. Garmire	9.5k 1.0×	3.6k 1.0×	899 0.7×	423 0.8×	223 0.4×	281	10.0k
M. Elvis	11.8k 1.2×	4.7k 1.3×	1.4k 1.0×	417 0.8×	203 0.4×	351	12.1k
W. N. Brandt	16.5k 1.6×	5.6k 1.5×	3.1k 2.4×	573 1.1×	355 0.7×	406	16.8k
Julian H. Krolik	10.0k 1.0×	3.4k 0.9×	857 0.7×	404 0.8×	457 0.9×	197	10.4k
J. S. Kaastra	8.2k 0.8×	2.8k 0.8×	551 0.4×	975 1.9×	215 0.4×	331	8.8k
E. Churazov	8.5k 0.8×	3.3k 0.9×	904 0.7×	254 0.5×	223 0.4×	343	8.8k
G. Hasinger	7.6k 0.8×	2.7k 0.7×	1.6k 1.3×	258 0.5×	141 0.3×	267	7.9k
R. Giacconi	6.7k 0.7×	2.5k 0.7×	939 0.7×	328 0.6×	264 0.5×	186	7.3k
R. Sunyaev	9.2k 0.9×	3.8k 1.0×	407 0.3×	318 0.6×	403 0.8×	436	9.6k

Countries citing papers authored by K. Nandra

Since Specialization

Citations

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

Fields of papers citing papers by K. Nandra

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of K. Nandra

This figure shows the co-authorship network connecting the top 25 collaborators of K. Nandra. A scholar is included among the top collaborators of K. Nandra 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 K. Nandra. K. Nandra 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

Shreeram, Soumya, Johan Comparat, A. Merloni, et al.. (2025). Retrieving the hot circumgalactic medium physics from the X-ray radial profile from eROSITA with an IlustrisTNG-based forward model. Astronomy and Astrophysics. 703. A137–A137.

Büchner, Johannes, Teng Liu, K. Nandra, et al.. (2025). The average soft X-ray spectra of eROSITA active galactic nuclei. Astronomy and Astrophysics. 701. A144–A144.

Lechner, P., et al.. (2024). Silicon drift detectors for the Spectroscopy Focusing Array of eXTP. Virtual Community of Pathological Anatomy (University of Castilla La Mancha). 257–257.

Zhang, Yi, Johan Comparat, G. Ponti, et al.. (2024). The hot circumgalactic medium in the eROSITA All-Sky Survey. Astronomy and Astrophysics. 690. A268–A268. 16 indexed citations

Bülbül, Esra, Xiaoyuan Zhang, Matthias Kluge, et al.. (2024). The galaxy group merger origin of the Cloverleaf odd radio circle system. Astronomy and Astrophysics. 685. L2–L2. 2 indexed citations

Roster, W., M. Salvato, Sven Krippendorf, et al.. (2024). PICZL: Image-based photometric redshifts for AGN. Astronomy and Astrophysics. 692. A260–A260. 1 indexed citations

Zhang, Yi, Johan Comparat, G. Ponti, et al.. (2024). The hot circumgalactic medium in the eROSITA All-Sky Survey. Astronomy and Astrophysics. 693. A197–A197. 8 indexed citations

Zhang, Yi, Johan Comparat, G. Ponti, et al.. (2024). The hot circumgalactic medium in the eROSITA All-Sky Survey. Astronomy and Astrophysics. 690. A267–A267. 19 indexed citations

Krumpe, M., T. Miyaji, A. Georgakakis, et al.. (2023). The Spatial Clustering of ROSAT All-Sky Survey Active Galactic Nuclei. V. The Evolution of Broad-line AGN Clustering Properties in the Last 6 Gyr. The Astrophysical Journal. 952(2). 109–109. 5 indexed citations

10.

Wolf, J., K. Nandra, M. Salvato, et al.. (2022). X-ray emission from a rapidly accreting narrow-line Seyfert 1 galaxy at z = 6.56. Astronomy and Astrophysics. 669. A127–A127. 6 indexed citations

11.

Arcodia, R., G. Miniutti, G. Ponti, et al.. (2022). The complex time and energy evolution of quasi-periodic eruptions in eRO-QPE1. Astronomy and Astrophysics. 662. A49–A49. 47 indexed citations

12.

Seppi, R., Johan Comparat, K. Nandra, et al.. (2021). The mass function dependence on the dynamical state of dark matter haloes. Springer Link (Chiba Institute of Technology). 16 indexed citations

13.

Hornschemeier, A. E., F. Haberl, Antara Basu‐Zych, et al.. (2021). The eROSITA Final Equatorial-Depth Survey (eFEDS). Astronomy and Astrophysics. 661. A16–A16. 9 indexed citations

14.

Arcodia, R., G. Ponti, A. Merloni, & K. Nandra. (2020). Do stellar-mass and super-massive black holes have similar dining habits?. Springer Link (Chiba Institute of Technology). 10 indexed citations

15.

Arcodia, R., A. Merloni, K. Nandra, & G. Ponti. (2019). Testing the disk-corona interplay in radiatively-efficient broad-line AGN. Springer Link (Chiba Institute of Technology). 29 indexed citations

16.

Büchner, Johannes, Murray Brightman, K. Nandra, Robert Nikutta, & F. E. Bauer. (2019). X-ray spectral and eclipsing model of the clumpy obscurer in active galactic nuclei. Springer Link (Chiba Institute of Technology). 11 indexed citations

17.

Ananna, Tonima Tasnim, M. Salvato, Stephanie LaMassa, et al.. (2017). AGN Populations in Large-volume X-Ray Surveys: Photometric Redshifts and Population Types Found in the Stripe 82X Survey. The Astrophysical Journal. 850(1). 66–66. 45 indexed citations

18.

Böller, Thomas, M. J. Freyberg, J. Trümper, et al.. (2016). Second ROSAT all-sky survey (2RXS) source catalogue. Springer Link (Chiba Institute of Technology). 92 indexed citations

19.

Gerke, Brian F., Jeffrey A. Newman, Jennifer M. Lotz, et al.. (2006). The DEEP2 Galaxy Redshift Survey: AEGIS observations of a Dual AGN at z = 0.7. eScholarship (California Digital Library). 35 indexed citations

20.

Porquet, D., J. N. Reeves, A. Markowitz, et al.. (2006). An XMM-Newton view of the X-ray flat radio-quiet quasar PG 1416-129. Springer Link (Chiba Institute of Technology). 2 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.

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