Siemiginowska, Aneta
Fellowship Advisor Smithsonian Astrophysical Observatory staffPhysics of Active Galaxies and Quasars. Evolution of Radio Galaxies. X-ray emission associated with relativistic outflows. Astrostatistics.
Background And Education
Education And Training
Research And Grants
Co-principal Investigator On
Publications
Selected Publications
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Article
- Kiehlmann, S., Lister, M. L., Readhead, A. C. S., Liodakis, I., O'Neill, Sandra, Pearson, T. J., Sheldahl, Evan, Siemiginowska, Aneta, Tassis, K., Taylor, G. B., and Wilkinson, P. N. 2024. "Compact Symmetric Objects. I. Toward a Comprehensive Bona Fide Catalog." The Astrophysical Journal, 961 240. https://doi.org/10.3847/1538-4357/ad0c56. 2024
- Kiehlmann, S., Readhead, A. C. S., O'Neill, S., Wilkinson, P. N., Lister, M. L., Liodakis, I., Bruzewski, S., Pavlidou, V., Pearson, T. J., Sheldahl, E., Siemiginowska, Aneta, Tassis, K., and Taylor, G. B. 2024. "Compact Symmetric Objects. II. Confirmation of a Distinct Population of High-luminosity Jetted Active Galaxies." The Astrophysical Journal, 961 241. https://doi.org/10.3847/1538-4357/ad0cc2. 2024
- Readhead, A. C. S., Ravi, V., Blandford, R. D., Sullivan, A. G., Somalwar, J., Begelman, M. C., Birkinshaw, M., Liodakis, I., Lister, M. L., Pearson, T. J., Taylor, G. B., Wilkinson, P. N., Globus, N., Kiehlmann, S., Lawrence, C. R., Murphy, D., O'Neill, S., Pavlidou, V., Sheldahl, E., Siemiginowska, Aneta, and Tassis, K. 2024. "Compact Symmetric Objects. III. Evolution of the High-luminosity Branch and a Possible Connection with Tidal Disruption Events." The Astrophysical Journal, 961 242. https://doi.org/10.3847/1538-4357/ad0c55. 2024
- Sobolewska, Małgosia, Siemiginowska, Aneta, Migliori, Giulia, Ostorero, Luisa, Stawarz, Łukasz, and Guainazzi, Matteo. 2023. "Obscuring Environment and X-Ray Variability of Compact Symmetric Objects Unveiled with XMM-Newton and NuSTAR." The Astrophysical Journal, 948 81. https://doi.org/10.3847/1538-4357/acbb6c. 2023
- Meyer, Antoine D., van Dyk, David A., Tak, Hyungsuk, and Siemiginowska, Aneta. 2023. "TD-CARMA: Painless, Accurate, and Scalable Estimates of Gravitational Lens Time Delays with Flexible CARMA Processes." The Astrophysical Journal, 950 37. https://doi.org/10.3847/1538-4357/acbea1. 2023
- LaMassa, Stephanie M., Yaqoob, Tahir, Tzanavaris, Panayiotis, Gandhi, Poshak, Heckman, Timothy, Lansbury, George, and Siemiginowska, Aneta. 2023. "The Complex X-Ray Obscuration Environment in the Radio-loud Type 2 Quasar 3C 223." The Astrophysical Journal, 944 152. https://doi.org/10.3847/1538-4357/acb3bb. 2023
- Migliori, G., Siemiginowska, Aneta, Sobolewska, Malgorzata, Cheung, C. C., Stawarz, Ł, Schwartz, D., Snios, B., Saxena, A., and Kashyap, V. 2023. "The extremely X-ray luminous radio-loud quasar CFHQS J142952 544717 at z = 6.18 under Chandra high-angular resolution lens." Monthly Notices of the Royal Astronomical Society, 524 1087–1095. https://doi.org/10.1093/mnras/stad1959. 2023
- Migliori, G., Siemiginowska, Aneta, Cheung, C. C., Celotti, A., Giroletti, M., Giovannini, G., Paggi, A., and Liuzzo, E. 2022. "Discovery of a bright extended X-ray jet in RGB J1512 020A." Monthly Notices of the Royal Astronomical Society, 512 4639–4659. https://doi.org/10.1093/mnras/stac514. 2022
- Fabbiano, G., Paggi, A., Morganti, R., Baloković, M., Elvis, M., Mukherjee, D., Meenakshi, M., Siemiginowska, Aneta, Murthy, S. M., Oosterloo, T. A., Wagner, A. Y., and Bicknell, G. 2022. "Jet-ISM Interaction in NGC 1167/B2 0258 35, an LINER with an AGN Past." The Astrophysical Journal, 938 105. https://doi.org/10.3847/1538-4357/ac8ff8. 2022
- Snios, Bradford, de Vries, Martijn, Nulsen, Paul E. J., Kraft, Ralph P., Siemiginowska, Aneta, and Wise, Michael W. 2022. "Late-time X-ray observations of the transient source Cygnus A-2." Monthly Notices of the Royal Astronomical Society, 511 5817–5822. https://doi.org/10.1093/mnras/stac430. 2022
- Bariuan, Luis Gabriel C., Snios, Bradford, Sobolewska, Małgosia, Siemiginowska, Aneta, and Schwartz, Daniel A. 2022. "The Fundamental Planes of black hole activity for radio-loud and radio-quiet quasars." Monthly Notices of the Royal Astronomical Society, 513 4673–4681. https://doi.org/10.1093/mnras/stac1153. 2022
- Sobolewska, Małgosia, Migliori, Giulia, Ostorero, Luisa, Siemiginowska, Aneta, Stawarz, Łukasz, Guainazzi, Matteo, and Hardcastle, Martin J. 2022. "The Origin of High-energy Emission in the Young Radio Source PKS 1718-649." The Astrophysical Journal, 941 52. https://doi.org/10.3847/1538-4357/ac98ba. 2022
- Shaban, F., Siemiginowska, Aneta, Suleiman, R. M., El-Nawawy, M. S., and Ali, A. 2022. "X-ray properties of high-redshift Radio Loud and Radio Quiet Quasars observed by Chandra." Journal of High Energy Astrophysics, 36 152–161. https://doi.org/10.1016/j.jheap.2022.10.002. 2022
- O'Sullivan, Ewan, Kunert-Bajraszewska, Magdalena, Siemiginowska, Aneta, Burke, Douglas J., Combes, Françoise, Salomé, Philippe, and Giacintucci, Simona. 2021. "1321 045: A compact steepâ€'spectrum radio source in a coolâ€'core galaxy cluster." Astronomische Nachrichten, 342 1155–1159. https://doi.org/10.1002/asna.20210035. 2021
- Wołowska, Aleksandra, Kunert-Bajraszewska, Magdalena, Mooley, Kunal P., Siemiginowska, Aneta, Kharb, Preeti, Ishwara-Chandra, C. H., Hallinan, Gregg, Gromadzki, Mariusz, and Kozieł-Wierzbowska, Dorota. 2021. "Caltech-NRAO Stripe 82 Survey (CNSS). V. AGNs That Transitioned to Radio-loud State." The Astrophysical Journal, 914 22. https://doi.org/10.3847/1538-4357/abe62d. 2021
- Jones, Mackenzie L., Parker, Kieran, Fabbiano, G., Elvis, Martin, Maksym, W. Peter, Paggi, A., Ma, Jingzhe, Karovska, M., Siemiginowska, Aneta, and Wang, Junfeng. 2021. "Extended X-Ray Emission in Compton Thick AGN with Deep Chandra Observations." The Astrophysical Journal, 910 19. https://doi.org/10.3847/1538-4357/abe128. 2021
- Kosmaczewski, Emily, Stawarz, Lukasz, Cheung, C. C., KozieÅ‚-Wierzbowska, Dorota, Marchenko, Volodymyr, Ostorero, Luisa, Siemiginowska, Aneta, Sobolewska, Malgosia, and Wójtowicz, Anna. 2021. "Midâ€'infrared properties of a sample of the most compact radio galaxies." Astronomische Nachrichten, 342 1102–1106. https://doi.org/10.1002/asna.20210067. 2021
- WoÅ‚owska, Aleksandra, Kunert-Bajraszewska, Magdalena, Mooley, Kunal, Siemiginowska, Aneta, Kharb, Preeti, Ishwara-Chandra, C. H., Hallinan, Gregg, Gromadzki, Mariusz, and KozieÅ‚-Wierzbowska, Dorota. 2021. "Studies on slow radio transients." Astronomische Nachrichten, 342 1212–1216. https://doi.org/10.1002/asna.20210046. 2021
- Lister, Matthew L., Homan, Dan C., Kovalev, Yuri Y., Mandal, Soham, Pushkarev, Alexander B., and Siemiginowska, Aneta. 2021. "TXS 0128 554: A young gammaâ€'ray emitting active galactic nucleus with episodic jet activity." Astronomische Nachrichten, 342 1117–1120. https://doi.org/10.1002/asna.20210056. 2021
- McDowell, Jonathan C., Siemiginowska, Aneta, Ashby, Matthew, Blundell, Katherine, and Gallo, Luigi C. 2021. "The Unusual Weak-line Quasar PG1407 265 and Its Foreground z 0.7 X-Ray Cluster." The Astrophysical Journal, 919 22. https://doi.org/10.3847/1538-4357/ac0a75. 2021
- Readhead, Anthony C. S., Kiehlmann, Sebastian, Lister, Matthew L., O'Neill, Sandra, Pearson, Timothy J., Sheldahl, Evan, Siemiginowska, Aneta, Taylor, Gregory B., and Wilkinson, Peter N. 2021. "What defines a compact symmetric object? A carefully vetted sample of compact symmetric objects." Astronomische Nachrichten, 342 1185–1190. https://doi.org/10.1002/asna.20210049. 2021
- Balasubramaniam, K., Stawarz, Ł., Cheung, C. C., Sobolewska, M., Marchenko, V., Thimmappa, R., Król, D. Ł., Migliori, G., and Siemiginowska, Aneta. 2021. "X-Ray Emission of the γ-ray-loud Young Radio Galaxy NGC 3894." The Astrophysical Journal, 922 84. https://doi.org/10.3847/1538-4357/ac1ff5. 2021
- Thimmappa, R., Stawarz, L., Marchenko, V., Balasubramaniam, K., Cheung, C. C., and Siemiginowska, Aneta. 2020. "Chandra Imaging of the Western Hotspot in the Radio Galaxy Pictor A: Image Deconvolution and Variability Analysis." The Astrophysical Journal, 903 109. https://doi.org/10.3847/1538-4357/abb605. 2020
- Jones, Mackenzie L., Fabbiano, Giuseppina, Elvis, Martin, Paggi, A., Karovska, Margarita, Maksym, W. Peter, Siemiginowska, Aneta, and Raymond, John. 2020. "Chandra Observations of NGC 7212: Large-scale Extended Hard X-Ray Emission." The Astrophysical Journal, 891 133. https://doi.org/10.3847/1538-4357/ab76c8. 2020
- Balasubramaniam, K., Stawarz, L., Marchenko, V., Sobolewska, Magorzata A., Cheung, C. C., Siemiginowska, Aneta, Thimmappa, R., and Kosmaczewski, E. 2020. "Chandra View of the LINER-type Nucleus in the Radio-loud Galaxy CGCG 292-057: Ionized Iron Line and Jet-ISM Interactions." The Astrophysical Journal, 905 148. https://doi.org/10.3847/1538-4357/abc4e2. 2020
- Worrall, D. M., Birkinshaw, M., Marshall, H. L., Schwartz, Daniel A., Siemiginowska, Aneta, and Wardle, J. F. C. 2020. "Inverse-Compton scattering in the resolved jet of the high-redshift quasar PKS J1421-0643." Monthly Notices of the Royal Astronomical Society, 497 988–1000. https://doi.org/10.1093/mnras/staa1975. 2020
- Kosmaczewski, E., Stawarz, Ł., Siemiginowska, Aneta, Cheung, C. C., Ostorero, L., Sobolewska, Malgorzata, Kozieł-Wierzbowska, D., Wójtowicz, A., and Marchenko, V. 2020. "Mid-infrared Diagnostics of the Circumnuclear Environments of the Youngest Radio Galaxies." The Astrophysical Journal, 897 164. https://doi.org/10.3847/1538-4357/ab9b1f. 2020
- Wójtowicz, A., Stawarz, Ł., Cheung, C. C., Ostorero, L., Kosmaczewski, E., and Siemiginowska, Aneta. 2020. "On the Jet Production Efficiency in a Sample of the Youngest Radio Galaxies." The Astrophysical Journal, 892 116. https://doi.org/10.3847/1538-4357/ab7930. 2020
- Couto, Guilherme S., Storchi-Bergmann, Thaisa, Siemiginowska, Aneta, Riffel, Rogemar A., and Morganti, Raffaella. 2020. "Powerful ionized gas outflows in the interacting radio galaxy 4C 29.30." Monthly Notices of the Royal Astronomical Society, 497 5103–5117. https://doi.org/10.1093/mnras/staa2268. 2020
- Lister, Matthew L., Homan, Daniel C., Kovalev, Yuri Y., Mandal, S., Pushkarev, Alexander B., and Siemiginowska, Aneta. 2020. "TXS 0128 554: A Young Gamma-Ray-emitting Active Galactic Nucleus with Episodic Jet Activity." The Astrophysical Journal, 899 141. https://doi.org/10.3847/1538-4357/aba18d. 2020
- Schwartz, Daniel A., Siemiginowska, Aneta, Snios, Bradford, Worrall, D. M., Birkinshaw, M., Cheung, C. C., Marshall, H., Migliori, G., Wardle, J. F. C., and Gobeille, Doug. 2020. "Two Candidate High-redshift X-Ray Jets without Coincident Radio Jets." The Astrophysical Journal, 904 57. https://doi.org/10.3847/1538-4357/abbd99. 2020
- Snios, Bradford, Siemiginowska, Aneta, Sobolewska, Małgosia, Cheung, C. C., Kashyap, Vinay, Migliori, Giulia, Schwartz, Daniel A., Stawarz, Łukasz, and Worrall, Diana M. 2020. "X-Ray Properties of Young Radio Quasars at z > 4.5." The Astrophysical Journal, 899 127. https://doi.org/10.3847/1538-4357/aba2ca. 2020
- Ryan, J. L., Siemiginowska, Aneta, Sobolewska, Magorzata A., and Grindlay, Jonathan. 2019. "Characteristic Variability Timescales in the Gamma-Ray Power Spectra of Blazars." The Astrophysical Journal, 885 12. https://doi.org/10.3847/1538-4357/ab426a. 2019
- Fabbiano, Giuseppina, Siemiginowska, Aneta, Paggi, Alessandro, Elvis, Martin, Volonteri, M., Mayer, L., Karovska, Margarita, Maksym, W. Peter, Risaliti, G., and Wang, Junfeng. 2019. "Deep Chandra Observations of ESO 428-G014. IV. The Morphology of the Nuclear Region in the Hard Continuum and Fe Kα Line." The Astrophysical Journal, 870 69. https://doi.org/10.3847/1538-4357/aaf0a4. 2019
- de Vries, M. N., Wise, M. W., Nulsen, Paul E. J., Siemiginowska, Aneta, Rowlinson, A., and Reynolds, C. S. 2019. "Evidence for a TDE origin of the radio transient Cygnus A-2." Monthly Notices of the Royal Astronomical Society, 486 3388–3401. https://doi.org/10.1093/mnras/stz1078. 2019
- Sobolewska, Małgosia, Siemiginowska, Aneta, Guainazzi, Matteo, Hardcastle, Martin, Migliori, Giulia, Ostorero, Luisa, and Stawarz, Łukasz. 2019. "First Hard X-Ray Observation of a Compact Symmetric Object: A Broadband X-Ray Study of a Radio Galaxy OQ 208 with NuSTAR and Chandra." The Astrophysical Journal, 884 166. https://doi.org/10.3847/1538-4357/ab3ec3. 2019
- Schwartz, Daniel A., Siemiginowska, Aneta, Worrall, Diana M., Birkinshaw, Mark, Cheung, Teddy, Marshall, Herman, Migliori, Giulia, Wardle, John, and Gobeille, Doug. 2019. "Relativistic X‑ray jets at high redshift." Astronomische Nachrichten, 340 30–34. https://doi.org/10.1002/asna.201913554. 2019
- Sobolewska, Małgosia, Siemiginowska, Aneta, Guainazzi, Matteo, Hardcastle, Martin, Migliori, Giulia, Ostorero, Luisa, and Stawarz, Łukasz. 2019. "The Impact of the Environment on the Early Stages of Radio Source Evolution." The Astrophysical Journal, 871 71. https://doi.org/10.3847/1538-4357/aaee78. 2019
- Fabbiano, Giuseppina, Paggi, Alessandro, Siemiginowska, Aneta, and Elvis, Martin. 2018. "Chandra Detection of the Circumnuclear Molecular Torus of the Compton-thick Active Galactic Nucleus in NGC 5643." The Astrophysical Journal Letters, 869 L36. https://doi.org/10.3847/2041-8213/aaf73e. 2018
- Bassi, T., Migliori, G., Grandi, P., Vignali, C., Pérez-Torres, M. A., Baldi, R. D., Torresi, E., Siemiginowska, Aneta, and Stanghellini, C. 2018. "Faint γ-ray sources at low redshift: the radio galaxy IC 1531." Monthly Notices of the Royal Astronomical Society, 481 5236–5246. https://doi.org/10.1093/mnras/sty2622. 2018
- Goyal, A., Stawarz, L., Zola, S., Marchenko, V., Soida, M., Nilsson, K., Ciprini, S., Baran, A., Ostrowski, M., Wiita, P. J., Gopal-Krishna, Siemiginowska, Aneta, Sobolewska, M., Jorstad, S., Marscher, A., Aller, M. F., Aller, H. D., Hovatta, T., Caton, D. B., Reichart, D., Matsumoto, K., Sadakane, K., Gazeas, K., Kidger, M., Piirola, V. et al. 2018. "Stochastic Modeling of Multiwavelength Variability of the Classical BL Lac Object OJ 287 on Timescales Ranging from Decades to Hours." The Astrophysical Journal, 863 175. https://doi.org/10.3847/1538-4357/aad2de. 2018
- Harris, D. E., Lee, N. P., Schwartz, D. A., Siemiginowska, Aneta, Massaro, F., Birkinshaw, M., Worrall, D. M., Cheung, C. C., Gelbord, J. M., Jorstad, Svetlana G., Marscher, Alan P., Landt, H., Marshall, H., Perlman, E. S., Stawarz, L., Uchiyama, Y., and Urry, C. M. 2017. "A Multi-band Study of the Remarkable Jet in Quasar 4C 19.44." The Astrophysical Journal, 846 119. https://doi.org/10.3847/1538-4357/aa845c. 2017
- Ostorero, Luisa, Morganti, Raffaella, Diaferio, Antonaldo, Siemiginowska, Aneta, Stawarz, Lukasz, Moderski, Rafal, and Labiano, Alvaro. 2017. "Correlation between X-Ray and Radio Absorption in Compact Radio Galaxies." The Astrophysical Journal, 849 34. https://doi.org/10.3847/1538-4357/aa8ef6. 2017
- Hardcastle, M. J., Lenc, E., Birkinshaw, M., Croston, J. H., Goodger, J. L., Marshall, H. L., Perlman, E. S., Siemiginowska, Aneta, Stawarz, Ł., and Worrall, D. M. 2016. "Deep Chandra observations of Pictor A." Monthly Notices of the Royal Astronomical Society, 455 3526–3545. https://doi.org/10.1093/mnras/stv2553. 2016
- McKeough, Kathryn, Siemiginowska, Aneta, Cheung, C. C., Stawarz, Lukasz, Kashyap, Vinay L., Stein, Nathan, Stampoulis, Vasileios, van Dyk, David A., Wardle, J. F. C., Lee, N. P., Harris, D. E., Schwartz, D. A., Donato, Davide, Maraschi, Laura, and Tavecchio, Fabrizio. 2016. "Detecting Relativistic X-Ray Jets in High-redshift Quasars." The Astrophysical Journal, 833 123. https://doi.org/10.3847/1538-4357/833/1/123. 2016
- Migliori, G., Siemiginowska, Aneta, Sobolewska, Magorzata A., Loh, A., Corbel, S., Ostorero, L., and Stawarz, Ł. 2016. "First Detection in Gamma-Rays of a Young Radio Galaxy: Fermi-LAT Observations of the Compact Symmetric Object PKS 1718-649." The Astrophysical Journal Letters, 821 L31. https://doi.org/10.3847/2041-8205/821/2/L31. 2016
- Simionescu, A., Stawarz, Ł., Ichinohe, Y., Cheung, C. C., Jamrozy, M., Siemiginowska, Aneta, Hagino, K., Gandhi, P., and Werner, N. 2016. "Serendipitous Discovery of an Extended X-Ray Jet without a Radio Counterpart in a High- redshift Quasar." The Astrophysical Journal Letters, 816 L15. https://doi.org/10.3847/2041-8205/816/1/L15. 2016
- Siemiginowska, Aneta, Sobolewska, Malgosia, Migliori, Giulia, Guainazzi, Matteo, Hardcastle, Martin, Ostorero, Luisa, and Stawarz, Lukasz. 2016. "X-Ray Properties of the Youngest Radio Sources and Their Environments." The Astrophysical Journal, 823 57. https://doi.org/10.3847/0004-637X/823/1/57. 2016
- Stein, Nathan M., van Dyk, David A., Kashyap, Vinay L., and Siemiginowska, Aneta. 2015. "Detecting Unspecified Structure in Low-count Images." The Astrophysical Journal, 813 66. https://doi.org/10.1088/0004-637X/813/1/66. 2015
- Hagino, K., Stawarz, L., Siemiginowska, Aneta, Cheung, C. C., Koziel-Wierzbowska, D., Szostek, A., Madejski, G., Harris, D. E., Simionescu, A., and Takahashi, T. 2015. "On the Merging Cluster Abell 578 and Its Central Radio Galaxy 4C 67.13." The Astrophysical Journal, 805 101. https://doi.org/10.1088/0004-637X/805/2/101. 2015
- Gentry, Eric S., Marshall, Herman L., Hardcastle, Martin J., Perlman, Eric S., Birkinshaw, Mark, Worrall, Diana M., Lenc, Emil, Siemiginowska, Aneta, and Urry, C. Megan. 2015. "Optical Detection of the Pictor A Jet and Tidal Tail: Evidence against an IC/CMB jet." The Astrophysical Journal, 808 92. https://doi.org/10.1088/0004-637X/808/1/92. 2015
- Liao, Kai, Treu, Tommaso, Marshall, Phil, Fassnacht, Christopher D., Rumbaugh, Nick, Dobler, Gregory, Aghamousa, Amir, Bonvin, Vivien, Courbin, Frederic, Hojjati, Alireza, Jackson, Neal, Kashyap, Vinay, Rathna Kumar, S., Linder, Eric, Mandel, Kaisey, Meng, Xiao-Li, Meylan, Georges, Moustakas, Leonidas A., Prabhu, Tushar P., Romero-Wolf, Andrew, Shafieloo, Arman, Siemiginowska, Aneta, Stalin, Chelliah S., Tak, Hyungsuk, Tewes, Malte et al. 2015. "Strong Lens Time Delay Challenge. II. Results of TDC1." The Astrophysical Journal, 800 11. https://doi.org/10.1088/0004-637X/800/1/11. 2015
- Xu, Jin, van Dyk, David A., Kashyap, Vinay L., Siemiginowska, Aneta, Connors, Alanna, Drake, Jeremy J., Meng, Xiao-Li, Ratzlaff, Pete, and Yu, Yaming. 2014. "A Fully Bayesian Method for Jointly Fitting Instrumental Calibration and X-Ray Spectral Models." The Astrophysical Journal, 794 97. https://doi.org/10.1088/0004-637X/794/2/97. 2014
- Kunert-Bajraszewska, M., Labiano, A., Siemiginowska, Aneta, and Guainazzi, M. 2014. "First X-ray observations of low-power compact steep spectrum sources." Monthly Notices of the Royal Astronomical Society, 437 3063–3071. https://doi.org/10.1093/mnras/stt1978. 2014
- Kelly, Brandon C., Becker, Andrew C., Sobolewska, Malgosia, Siemiginowska, Aneta, and Uttley, Phil. 2014. "Flexible and Scalable Methods for Quantifying Stochastic Variability in the Era of Massive Time- domain Astronomical Data Sets." The Astrophysical Journal, 788 33. https://doi.org/10.1088/0004-637X/788/1/33. 2014
- Migliori, G., Siemiginowska, Aneta, Kelly, B. C., Stawarz, L., Celotti, A., and Begelman, M. C. 2014. "Jet Emission in Young Radio Sources: A Fermi Large Area Telescope Gamma-Ray View." The Astrophysical Journal, 780 165. https://doi.org/10.1088/0004-637X/780/2/165. 2014
- Stawarz, L., Szostek, A., Cheung, C. C., Siemiginowska, Aneta, Koziel-Wierzbowska, D., Werner, N., Simionescu, A., Madejski, G., Begelman, M. C., Harris, D. E., Ostrowski, M., and Hagino, K. 2014. "On the Interaction of the PKS B1358–113 Radio Galaxy with the A1836 Cluster." The Astrophysical Journal, 794 164. https://doi.org/10.1088/0004-637X/794/2/164. 2014
- Sobolewska, Magorzata A., Siemiginowska, Aneta, Kelly, B. C., and Nalewajko, K. 2014. "Stochastic Modeling of the Fermi/LAT ?-Ray Blazar Variability." The Astrophysical Journal, 786 143. https://doi.org/10.1088/0004-637X/786/2/143. 2014
- Goodman, Alyssa A., Pepe, Alberto, Blocker, Alexander W., Borgman, Christine L., Cranmer, Kyle, Crosas, Merce, Di Stefano, Rosanne, Gil, Yolanda, Groth, Paul, Hedstrom, Margaret, Hogg, David W., Kashyap, Vinay, Mahabal, Ashish, Siemiginowska, Aneta, and Slavkovic, Aleksandra. 2014. "Ten Simple Rules for the Care and Feeding of Scientific Data." Plos Computational Biology, 10, (4) 1–5. https://doi.org/10.1371/journal.pcbi.1003542. 2014
- Kunert-Bajraszewska, M., Siemiginowska, Aneta, and Labiano, A. 2013. "An X-Ray Cooling-core Cluster Surrounding a Low-power Compact Steep Spectrum Radio Source 1321 045." The Astrophysical Journal Letters, 772 L7. https://doi.org/10.1088/2041-8205/772/1/L7. 2013
- Lanzuisi, G., Civano, Francesca, Elvis, M., Salvato, M., Hasinger, G., Vignali, C., Zamorani, G., Aldcroft, Thomas L., Brusa, M., Comastri, A., Fiore, F., Fruscione, A., Gilli, R., Ho, L. C., Mainieri, V., Merloni, A., and Siemiginowska, Aneta. 2013. "The Chandra-COSMOS survey - IV. X-ray spectra of the bright sample." Monthly Notices of the Royal Astronomical Society, 431 978–996. https://doi.org/10.1093/mnras/stt222. 2013
- Dainotti, M. G., Ostrowski, M., Harris, D., Siemiginowska, Aneta, and Siejkowski, H. 2012. "A cosmic ray cocoon along the X-ray jet of M87?" Monthly Notices of the Royal Astronomical Society, 426 218–225. https://doi.org/10.1111/j.1365-2966.2012.21086.x. 2012
- Migliori, Giulia, Siemiginowska, Aneta, and Celotti, Annalisa. 2012. "Broadband Jet Emission in Young and Powerful Radio Sources: The Case of the Compact Steep Spectrum Quasar 3C 186." The Astrophysical Journal, 749 107. https://doi.org/10.1088/0004-637X/749/2/107. 2012
- Siemiginowska, Aneta, Stawarz, Lukasz, Cheung, Chi C., Aldcroft, Thomas L., Bechtold, Jill, Burke, D. J., Evans, Daniel, Holt, Joanna, Jamrozy, Marek, and Migliori, Giulia. 2012. "Deep Chandra X-Ray Imaging of a nearby Radio Galaxy 4C 29.30: X-Ray/Radio Connection." The Astrophysical Journal, 750 124. https://doi.org/10.1088/0004-637X/750/2/124. 2012
- Cheung, C. C., Stawarz, Ł., Siemiginowska, Aneta, Gobeille, D., Wardle, J. F. C., Harris, D. E., and Schwartz, D. A. 2012. "Discovery of a Kiloparsec-scale X-Ray/Radio Jet in the z = 4.72 Quasar GB 1428 4217." The Astrophysical Journal Letters, 756 L20. https://doi.org/10.1088/2041-8205/756/1/L20. 2012
- Sobolewska, Magorzata A., Siemiginowska, Aneta, Migliori, G., Stawarz, L., Jamrozy, M., Evans, D., and Cheung, C. C. 2012. "Nuclear X-Ray Properties of the Peculiar Radio-loud Hidden AGN 4C 29.30." The Astrophysical Journal, 758 90. https://doi.org/10.1088/0004-637X/758/2/90. 2012
- Hardcastle, Martin J., Massaro, Francesco, Harris, D. E., Baum, S. A., Bianchi, S., Chiaberge, M., Morganti, R., O'Dea, C. P., and Siemiginowska, Aneta. 2012. "The nature of the jet-driven outflow in the radio galaxy 3C 305." Monthly Notices of the Royal Astronomical Society, 424 1774–1789. https://doi.org/10.1111/j.1365-2966.2012.21247.x. 2012
- Kelly, Brandon C., Sobolewska, Magorzata A., and Siemiginowska, Aneta. 2011. "A Stochastic Model for the Luminosity Fluctuations of Accreting Black Holes." The Astrophysical Journal, 730 52. https://doi.org/10.1088/0004-637X/730/1/52. 2011
- Lee, Hyunsook, Kashyap, Vinay L., van Dyk, David A., Connors, Alanna, Drake, Jeremy J., Izem, Rima, Meng, Xiao-Li, Min, Shandong, Park, Taeyoung, Ratzlaff, Pete, Siemiginowska, Aneta, and Zezas, Andreas. 2011. "Accounting for Calibration Uncertainties in X-ray Analysis: Effective Areas in Spectral Fitting." The Astrophysical Journal, 731, (2) 126. https://doi.org/10.1088/0004-637X/731/2/126. 2011
- Kelly, Brandon C., Bechtold, Jill, and Siemiginowska, Aneta. 2011. "Erratum: "Are the Variations in Quasar Optical Flux Driven by Thermal Fluctuations?" (2009, ApJ, 698, 895)." The Astrophysical Journal, 732 128. https://doi.org/10.1088/0004-637X/732/2/128. 2011
- Sobolewska, Magorzata A., Siemiginowska, Aneta, and Gierliński, Marek. 2011. "Simulated spectral states of active galactic nuclei and observational predictions." Monthly Notices of the Royal Astronomical Society, 413 2259–2268. https://doi.org/10.1111/j.1365-2966.2011.18302.x. 2011
- Primini, Francis A., Houck, John C., Davis, John E., Nowak, Michael A., Evans, Ian N., Glotfelty, Kenny J., Anderson, Craig S., Bonaventura, Nina R., Chen, Judy C., Doe, Stephen M., Evans, Janet D., Fabbiano, Giuseppina, Galle, Elizabeth C., Gibbs, Danny G., Grier, John D., Hain, Roger M., Hall, Diane M., Harbo, Peter N., Helen He, Xiangqun, Karovska, Margarita, Kashyap, Vinay L., Lauer, Jennifer, McCollough, Michael L., McDowell, Jonathan C., Miller, Joseph B. et al. 2011. "Statistical Characterization of the Chandra Source Catalog." The Astrophysical Journal Supplement Series, 194 37. https://doi.org/10.1088/0067-0049/194/2/37. 2011
- Kunert-Bajraszewska, M., Gawronski, M. P., Labiano, A., and Siemiginowska, Aneta. 2010. "A survey of low-luminosity compact sources and its implication for the evolution of radio-loud active galactic nuclei - I. Radio data." Monthly Notices of the Royal Astronomical Society, 408 2261–2278. https://doi.org/10.1111/j.1365-2966.2010.17271.x. 2010
- Siemiginowska, Aneta, Burke, D. J., Aldcroft, Thomas L., Worrall, D. M., Allen, S., Bechtold, Jill, Clarke, Tracy, and Cheung, C. C. 2010. "High-redshift X-ray Cooling-core Cluster Associated with the Luminous Radio-loud Quasar." The Astrophysical Journal, 722 102–111. https://doi.org/10.1088/0004-637X/722/1/102. 2010
- Kashyap, Vinay L., van Dyk, David A., Connors, Alanna, Freeman, Peter E., Siemiginowska, Aneta, Xu, Jin, and Zezas, Andreas. 2010. "On Computing Upper Limits to Source Intensities." The Astrophysical Journal, 719 900–914. https://doi.org/10.1088/0004-637X/719/1/900. 2010
- Kunert-Bajraszewska, Magdalena, Janiuk, Agnieszka, Gawronski, Marcin P., and Siemiginowska, Aneta. 2010. "Origin of the Complex Radio Structure in BAL QSO 1045 352." The Astrophysical Journal, 718 1345–1352. https://doi.org/10.1088/0004-637X/718/2/1345. 2010
- Evans, Ian N., Primini, Francis A., Glotfelty, Kenny J., Anderson, Craig S., Bonaventura, Nina R., Chen, Judy C., Davis, John E., Doe, Stephen M., Evans, Janet D., Fabbiano, Giuseppina, Galle, Elizabeth C., Gibbs, Danny G., Grier, John D., Hain, Roger M., Hall, Diane M., Harbo, Peter N., Helen He, Xiangqun, Houck, John C., Karovska, Margarita, Kashyap, Vinay L., Lauer, Jennifer, McCollough, Michael L., McDowell, Jonathan C., Miller, Joseph B., Mitschang, Arik W. et al. 2010. "The Chandra Source Catalog." The Astrophysical Journal Supplement Series, 189 37–82. 2010
- Salvesen, G., Miller, J. M., Cackett, E., and Siemiginowska, Aneta. 2009. "A Deep XMM-Newton Observation of the Quasar 3C 287." The Astrophysical Journal, 692 753–757. https://doi.org/10.1088/0004-637X/692/1/753. 2009
- Czerny, Bożena, Siemiginowska, Aneta, Janiuk, Agnieszka, Nikiel-Wroczyński, Błażej, and Stawarz, Łukasz. 2009. "Accretion Disk Model of Short-Timescale Intermittent Activity in Young Radio Sources." The Astrophysical Journal, 698 840–851. https://doi.org/10.1088/0004-637X/698/1/840. 2009
- Kelly, Brandon C., Bechtold, Jill, and Siemiginowska, Aneta. 2009. "Are the Variations in Quasar Optical Flux Driven by Thermal Fluctuations?" The Astrophysical Journal, 698 895–910. https://doi.org/10.1088/0004-637X/698/1/895. 2009
- Tengstrand, O., Guainazzi, M., Siemiginowska, Aneta, Fonseca Bonilla, N., Labiano, A., Worrall, D. M., Grandi, P., and Piconcelli, E. 2009. "The X-ray view of giga-hertz peaked spectrum radio galaxies." Astronomy and Astrophysics, 501 89–102. 2009
- Sobolewska, Magorzata A., Gierliński, Marek, and Siemiginowska, Aneta. 2009. "What can we learn about quasars from αOX measurements in Galactic black hole binaries?" Monthly Notices of the Royal Astronomical Society, 394 1640–1648. https://doi.org/10.1111/j.1365-2966.2009.14436.x. 2009
- Kunert-Bajraszewska, Magdalena, Siemiginowska, Aneta, Katarzyński, Krzysztof, and Janiuk, Agnieszka. 2009. "X-rays from a Radio-Loud Compact Broad Absorption Line Quasar 1045 352 and the Nature." The Astrophysical Journal, 705 1356–1363. https://doi.org/10.1088/0004-637X/705/2/1356. 2009
- Kataoka, J., Stawarz, Ł., Harris, D. E., Siemiginowska, Aneta, Ostrowski, M., Swain, M. R., Hardcastle, Martin J., Goodger, J. L., Iwasawa, K., and Edwards, P. G. 2008. "Chandra Reveals Twin X-Ray Jets in the Powerful FR II Radio Galaxy 3C 353." The Astrophysical Journal, 685 839–857. https://doi.org/10.1086/591024. 2008
- Kelly, Brandon C., Bechtold, Jill, Trump, Jonathan R., Vestergaard, Marianne, and Siemiginowska, Aneta. 2008. "Observational Constraints on the Dependence of Radio-Quiet Quasar X-Ray Emission on Black Hole Mass and Accretion Rate." The Astrophysical Journal Supplement Series, 176 355–373. 2008
- Park, Taeyoung, van Dyk, David A., and Siemiginowska, Aneta. 2008. "Searching for Narrow Emission Lines in X-ray Spectra: Computation and Methods." The Astrophysical Journal, 688 807–825. 2008
- Czerny, B., Siemiginowska, Aneta, Janiuk, A., and Gupta, A. C. 2008. "The nature of the intranight variability of radio-quiet quasars." Monthly Notices of the Royal Astronomical Society, 386 1557–1567. https://doi.org/10.1111/j.1365-2966.2008.13131.x. 2008
- Siemiginowska, Aneta, LaMassa, Stephanie, Aldcroft, Thomas L., Bechtold, Jill, and Elvis, Martin. 2008. "X-Ray Properties of the Gigahertz Peaked and Compact Steep Spectrum Sources." The Astrophysical Journal, 684 811–821. https://doi.org/10.1086/589437. 2008
- Schwartz, D. A., Harris, D. E., Landt, H., Siemiginowska, Aneta, Marshall, H. L., Gelbord, J. M., Perlman, E. S., Georganopoulos, M., Birkinshaw, M., Worrall, D. M., Cheung, C. C., Stawarz, L., Jorstad, S. G., Marscher, A. P., Uchiyama, Y., and Urry, C. M. 2007. "The X-ray jet and lobes of PKS 1354 195 (=4C 19.44)." Astrophysics and Space Science, 311 341–345. https://doi.org/10.1007/s10509-007-9548-y. 2007
- Schwartz, D. A., Harris, D. E., Landt, H., Siemiginowska, Aneta, Marshall, H. L., Gelbord, J. M., Perlman, E. S., Georganopoulos, M., Birkinshaw, Mark, Worrall, D. M., Cheung, C. C., Stawarz, L., Jorstad, S. G., Marscher, A. P., Uchiyama, Y., and Urry, C. M. 2007. "The X-ray jet and lobes of PKS 1354 195 (=4C 19.44)." Astrophysics and Space Science, 311 341–345. 2007
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- Smithsonian Astrophysical Observatory Academic Department