Search Results
Showing 1-20 of about 93 results.
Investigating the Emission Mechanism in the Spatially Resolved Jets of Two z ≈ 3 Radio-loud QuasarsDOI: info:10.3847/1538-4357/adccc1v. 986IOP75
Maithil, Jaya, Schwartz, Daniel A., Siemiginowska, Aneta, Kharb, Preeti, Worrall, Diana M., Wardle, John F. C., Migliori, Giulia, Cheung, Chi C., Snios, Bradford, Gobeille, Doug B., Marshall, Herman L., and Birkinshaw, Mark. 2025. "Investigating the Emission Mechanism in the Spatially Resolved Jets of Two z ≈ 3 Radio-loud Quasars." The Astrophysical Journal, 986 75. https://doi.org/10.3847/1538-4357/adccc1.
NuSTAR Observations of a Varying-flux Quasar in the Epoch of ReionizationDOI: info:10.3847/2041-8213/ad94eev. 979IOP
Marcotulli, Lea, Connor, Thomas, Bañados, Eduardo, Boorman, Peter G., Migliori, Giulia, Grefenstette, Brian W., Momjian, Emmanuel, Siemiginowska, Aneta, Stern, Daniel, Belladitta, Silvia, Cheung, C. C., Fabian, Andrew, Khusanova, Yana, Mazzucchelli, Chiara, Rojas-Ruiz, Sofía, and Urry, C. Megan. 2025. "NuSTAR Observations of a Varying-flux Quasar in the Epoch of Reionization." The Astrophysical Journal, 979. https://doi.org/10.3847/2041-8213/ad94ee.
SAUNAS. II. Discovery of Cross-shaped X-Ray Emission and a Rotating Circumnuclear Disk in the Supermassive S0 Galaxy NGC 5084DOI: info:10.3847/1538-4357/ad7c4bv. 977IOP238
Borlaff, Alejandro S., Marcum, Pamela M., Temi, Pasquale, Chamba, Nushkia, Chojnowski, S. Drew, Lopez-Rodriguez, Enrique, Siemiginowska, Aneta, Laine, Seppo, Koekemoer, Anton M., Sanderson, Kelly N., Dijeau, Audrey F., Prescott, Moire K. M., Proudfit, Leslie, and Fanelli, Michael N. 2024. "SAUNAS. II. Discovery of Cross-shaped X-Ray Emission and a Rotating Circumnuclear Disk in the Supermassive S0 Galaxy NGC 5084." The Astrophysical Journal, 977 238. https://doi.org/10.3847/1538-4357/ad7c4b.
Compact Symmetric Objects. I. Toward a Comprehensive Bona Fide CatalogDOI: info:10.3847/1538-4357/ad0c56v. 961IOP240
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.
Compact Symmetric Objects. II. Confirmation of a Distinct Population of High-luminosity Jetted Active GalaxiesDOI: info:10.3847/1538-4357/ad0cc2v. 961IOP241
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.
Compact Symmetric Objects. III. Evolution of the High-luminosity Branch and a Possible Connection with Tidal Disruption EventsDOI: info:10.3847/1538-4357/ad0c55v. 961IOP242
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.
The Complex X-Ray Obscuration Environment in the Radio-loud Type 2 Quasar 3C 223DOI: info:10.3847/1538-4357/acb3bbv. 944152
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.
TD-CARMA: Painless, Accurate, and Scalable Estimates of Gravitational Lens Time Delays with Flexible CARMA ProcessesDOI: info:10.3847/1538-4357/acbea1v. 95037
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.
The extremely X-ray luminous radio-loud quasar CFHQS J142952 + 544717 at z = 6.18 under Chandra high-angular resolution lensDOI: info:10.1093/mnras/stad1959v. 524OUP1087–1095
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.
Obscuring Environment and X-Ray Variability of Compact Symmetric Objects Unveiled with XMM-Newton and NuSTARDOI: info:10.3847/1538-4357/acbb6cv. 94881
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.
Jet-ISM Interaction in NGC 1167/B2 0258+35, an LINER with an AGN PastDOI: info:10.3847/1538-4357/ac8ff8v. 938105
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.
The Origin of High-energy Emission in the Young Radio Source PKS 1718-649DOI: info:10.3847/1538-4357/ac98bav. 94152
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.
Discovery of a bright extended X-ray jet in RGB J1512+020ADOI: info:10.1093/mnras/stac514v. 5124639–4659
Migliori, G., Paggi, A., Siemiginowska, Aneta, Celotti, A., Giovannini, G., Liuzzo, E., Cheung, C. C., and Giroletti, M. 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.
The Fundamental Planes of black hole activity for radio-loud and radio-quiet quasarsDOI: info:10.1093/mnras/stac1153v. 5134673–4681
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.
X-ray properties of high-redshift Radio Loud and Radio Quiet Quasars observed by ChandraDOI: info:10.1016/j.jheap.2022.10.002v. 36152–161
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.
Late-time X-ray observations of the transient source Cygnus A-2DOI: info:10.1093/mnras/stac430v. 5115817–5822
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.
Caltech-NRAO Stripe 82 Survey (CNSS). V. AGNs That Transitioned to Radio-loud StateDOI: info:10.3847/1538-4357/abe62dv. 91422
Wołowska, Aleksandra, Kunert-Bajraszewska, Magdalena, Siemiginowska, Aneta, Kharb, Preeti, Ishwara-Chandra, C. H., Hallinan, Gregg, Kozieł-Wierzbowska, Dorota, Gromadzki, Mariusz, and Mooley, Kunal P. 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.
Midâ€'infrared properties of a sample of the most compact radio galaxiesDOI: info:10.1002/asna.20210067v. 3421102–1106
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.
TXS 0128+554: A young gammaâ€'ray emitting active galactic nucleus with episodic jet activityDOI: info:10.1002/asna.20210056v. 3421117–1120
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.
The Unusual Weak-line Quasar PG1407+265 and Its Foreground z 0.7 X-Ray ClusterDOI: info:10.3847/1538-4357/ac0a75v. 91922
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.