Zobrazeno 1 - 10
of 1 367
pro vyhledávání: '"Siemiginowska A."'
Autor:
Siemiginowska, Aneta, Burke, Douglas, Günther, Hans Moritz, Lee, Nicholas P., McLaughlin, Warren, Principe, David A., Cheer, Harlan, Fruscione, Antonella, Laurino, Omar, McDowell, Jonathan, Terrell, Marie
We present an overview of Sherpa, an open source Python project, and discuss its development history, broad design concepts and capabilities. Sherpa contains powerful tools for combining parametric models into complex expressions that can be fit to d
Externí odkaz:
http://arxiv.org/abs/2409.10400
Autor:
Tak, Hyungsuk, Chen, Yang, Kashyap, Vinay L., Mandel, Kaisey S., Meng, Xiao-Li, Siemiginowska, Aneta, van Dyk, David A.
The production of complex astronomical data is accelerating, especially with newer telescopes producing ever more large-scale surveys. The increased quantity, complexity, and variety of astronomical data demand a parallel increase in skill and sophis
Externí odkaz:
http://arxiv.org/abs/2408.16179
Autor:
de la Parra, P. V., Readhead, A. C. S, Herbig, T., Kiehlmann, S., Lister, M. L., Pavlidou, V., Reeves, R. A., Siemiginowska, A., Sullivan, A. G., Surti, T., Synani, A., Tassis, K., Taylor, G. B., Wilkinson, P. N., Aller, M. F., Blandford, R. D., Globus, N., Lawrence, C. R., Molina, B., O'Neill, S., Pearson, T. J.
This paper addresses, for the first time, a key aspect of the phenomenology of Compact Symmetric Objects (CSOs) -- the characteristics of their radio spectra. We present a radio-spectrum description of a complete sample of high luminosity CSOs (CSO-2
Externí odkaz:
http://arxiv.org/abs/2408.13077
Autor:
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, Fanelli, Michael N.
Combining Chandra, ALMA, EVLA, and Hubble Space Telescope archival data and newly acquired APO/DIS spectroscopy, we detect a double-lobed 17~kpc X-ray emission with plumes oriented approximately perpendicular and parallel to the galactic plane of the
Externí odkaz:
http://arxiv.org/abs/2408.10449
Autor:
Evans, Ian N., Evans, Janet D., Martínez-Galarza, J. Rafael, Miller, Joseph B., Primini, Francis A., Azadi, Mojegan, Burke, Douglas J., Civano, Francesca M., D'Abrusco, Raffaele, Fabbiano, Giuseppina, Graessle, Dale E., Grier, John D., Houck, John C., Lauer, Jennifer, McCollough, Michael L., Nowak, Michael A., Plummer, David A., Rots, Arnold H., Siemiginowska, Aneta, Tibbetts, Michael S.
The Chandra Source Catalog (CSC) is a virtual X-ray astrophysics facility that enables both detailed individual source studies and statistical studies of large samples of X-ray sources detected in ACIS and HRC-I imaging observations obtained by the C
Externí odkaz:
http://arxiv.org/abs/2407.10799
We present a new method to distinguish between different states (e.g., high and low, quiescent and flaring) in astronomical sources with count data. The method models the underlying physical process as latent variables following a continuous-space Ma
Externí odkaz:
http://arxiv.org/abs/2405.06540
Publikováno v:
A&A 687, A287 (2024)
We report on new multi-frequency Very Large Array (VLA) radio observations and Chandra X-ray observations of a radio-loud quasar with a ~300 kpc long jet, PKS 1127-145, during a flaring event detected in $\gamma$-rays by the Fermi Large Area Telescop
Externí odkaz:
http://arxiv.org/abs/2405.04935
Autor:
Borlaff, Alejandro S., Marcum, Pamela M., Alpaslan, Mehmet, Temi, Pasquale, Chamba, Nushkia, Chojnowski, Drew S., Fanelli, Michael N., Koekemoer, Anton M., Laine, Seppo, Lopez-Rodriguez, Enrique, Siemiginowska, Aneta
We present SAUNAS (Selective Amplification of Ultra Noisy Astronomical Signal), a pipeline designed for detecting diffuse X-ray emission in the data obtained with the Advanced CCD Imaging Spectrometer (ACIS) of the Chandra X-ray Observatory. SAUNAS q
Externí odkaz:
http://arxiv.org/abs/2405.01625
We present a new method for joint likelihood deconvolution (Jolideco) of a set of astronomical observations of the same sky region in the presence of Poisson noise. The observations may be obtained from different instruments with different resolution
Externí odkaz:
http://arxiv.org/abs/2403.13933
Autor:
Bronzini, E., Migliori, G., Vignali, C., Sobolewska, M., Stawarz, Ł., Siemiginowska, A., Orienti, M., D'Ammando, F., Giroletti, M., Principe, G., Balasubramaniam, K.
Compact Symmetric Objects (CSOs) are thought to represent the first step in the evolutionary path of radio galaxies. In this work, we investigate the X-ray emission of two CSOs confirmed to emit at GeV energies: PKS 1718-649 and TXS 1146+596. Unveili
Externí odkaz:
http://arxiv.org/abs/2401.16479