Academic literature on the topic 'Cosmic Dawn'

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Journal articles on the topic "Cosmic Dawn"

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Cowen, Ron. "Cosmic Dawn." Science News 161, no. 23 (2002): 362. http://dx.doi.org/10.2307/4013543.

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Fialkov, Anastasia. "Tracing Cosmic Dawn." Proceedings of the International Astronomical Union 12, S333 (2017): 22–25. http://dx.doi.org/10.1017/s1743921318000194.

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AbstractObservational effort is on the way to probe the 21-cm of neutral hydrogen from the epochs of Reionization and Cosmic Dawn. Our current poor knowledge of high redshift astrophysics results in a large uncertainty in the theoretically predicted 21-cm signal. A recent parameter study that is highlighted here explores the variety of 21-cm signals resulting from viable astrophysical scenarios. Model-independent relations between the shape of the signal and the underlying astrophysics are discussed. Finally, I briefly note on possible alternative probes of the high redshift Universe, specific
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Misner, Charles W. "Cosmic Dark Dawn." Research Notes of the AAS 7, no. 7 (2023): 142. http://dx.doi.org/10.3847/2515-5172/ace440.

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Cooper, Keith. "A new cosmic dawn." Physics World 35, no. 1 (2022): 28–33. http://dx.doi.org/10.1088/2058-7058/35/01/31.

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As NASA’s James Webb Space Telescope gears up to open its eyes on the universe, Keith Cooper explores the mission’s troubled past, its technological advances and the exciting future ahead for astronomy.
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Iliev, I. T., D. Sullivan, and K. L. Dixon. "Simulating the cosmic dawn." Astronomy & Geophysics 56, no. 3 (2015): 3.31–3.33. http://dx.doi.org/10.1093/astrogeo/atv094.

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Durrive, J.-B., and M. Langer. "Magnetogenesis at Cosmic Dawn." Proceedings of the International Astronomical Union 11, S308 (2014): 378–79. http://dx.doi.org/10.1017/s1743921316010206.

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AbstractWe present a mechanism for generating cosmological magnetic fields during the Epoch of Reionization, based on the photoionization of intergalactic hydrogen. A general formula is presented, together with an example numerical application which yields magnetic field strengths between 10−23 to 10−19 G on intersource scales. This mechanism, which operates all along Reionization around any ionizing source, participates to the premagnetization of the whole intergalactic medium. Also, the spatial configuration of these fields may help discriminate them from those produced by other mechanisms i
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Cowen, Ron. "Galaxy formation: Cosmic dawn." Nature 497, no. 7451 (2013): 554–56. http://dx.doi.org/10.1038/497554a.

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Paliya, Vaidehi S., M. Ajello, H. M. Cao, et al. "Blazars at the Cosmic Dawn." Astrophysical Journal 897, no. 2 (2020): 177. http://dx.doi.org/10.3847/1538-4357/ab9c1a.

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Clery, D. "A glimpse of cosmic dawn." Science 346, no. 6210 (2014): 688–91. http://dx.doi.org/10.1126/science.346.6210.688.

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Ferrara, A. "Feedback Processes at Cosmic Dawn." EAS Publications Series 24 (2007): 229–43. http://dx.doi.org/10.1051/eas:2007032.

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Dissertations / Theses on the topic "Cosmic Dawn"

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Pensabene, Antonio <1991&gt. "Quasars at the dawn of cosmic time." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/10100/1/Pensabene_PhD_thesis.pdf.

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Quasars beyond redshift z ~ 6 (age of the Universe < 1 Gyr) are the most luminous sources in the Universe and are believed to be the progenitors of present-day early-type massive galaxies. The immense luminosities from their active nuclei are powered by rapid accretion of matter onto a central supermassive black hole such that quasars outshine the starlight emission of their host galaxies. The fast growth of the black hole in these quasars pairs with the rapid consumption of huge gas reservoirs through vigorous episodes of star formation. Such active galactic nuclei can regulate the star forma
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Ross, Hannah. "Simulating the 21-cm signal during the Cosmic Dawn." Thesis, University of Sussex, 2018. http://sro.sussex.ac.uk/id/eprint/79617/.

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The anticipated radio telescope SKA is expected to detect the 21-cm signal from the Cosmic Dawn, allowing us to probe the astrophysical processes of this previously unobserved era. The 21-cm differential brightness temperature fluctuations from the Cosmic Dawn are driven by early inhomogeneous heating of the neutral intergalactic medium and variations in Lyman-alpha photon density. Inhomogeneous heating is driven by high energy, X-ray photons which have long mean free paths and thus penetrate deep into the neutral intergalactic medium. Lyman-α fluctuations depend on the soft, UV photons from t
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Thekkeppattu, Jishnu Nambissan. "Towards Detection of Redshifted 21-cm Signal from Cosmic Dawn and Epoch of Reionisation." Thesis, Curtin University, 2022. http://hdl.handle.net/20.500.11937/89776.

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The redshifted 21-cm signal from neutral hydrogen has the potential to provide valuable information on the the periods of cosmic dawn and epoch of reionisation (CD/EoR). The sky-averaged or global component of the 21-cm signal is expected to be observable as a distortion to the low frequency radio spectrum. This thesis is on experimental techniques to detect the global 21-cm signal. Instrument descriptions, laboratory analysis, calibration and data analysis methods for two different instruments - SARAS-3 and SITARA - are provided. Advantages and challenges associated with each instrument are a
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Nebrin, Olof. "Cosmic Dawn in a Fuzzy Universe : Constraining the nature of Dark Matterwith 21 cm Cosmology." Thesis, Stockholms universitet, Institutionen för astronomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-154861.

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The cold dark matter (CDM) paradigm underlying the standard <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?%5CLambda" />CDM model of cosmology is successful on large scales but faces potential problems on small scales partly related to a seeming overproduction of dwarf galaxies. This could be alleviated in exotic dark matter models that suppresses small-scale structure formation. One such attractive model is known as fuzzy dark matter (FDM). FDM positsthat dark matter is composed of ultra-light bosons with masses <img src="http://www.diva-portal.org/cgi-bin/mimetex.cgi?m_%7B%5Crm%20F
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Dillon, Joshua Shane. "It's always darkest before the cosmic dawn : early results from novel tools and telescopes for 21 cm cosmology." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99255.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2015.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 463-490).<br>21 cm cosmology, the statistical observation of the high redshift universe using the hyperfine transition of neutral hydrogen, has the potential to revolutionize our understanding of cosmology and the astrophysical processes that underlie the forma
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Neben, Abraham Richard. "Tools, techniques, and early results in studies of 21 cm, Lyman-alpha, and H-alpha emission from the cosmic dawn." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112074.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 243-254).<br>We present advances in antenna characterization for low frequency radio observations of 21 cm emission from the Epoch of Reionization (EOR). Using satellite transmissions as probe signals, we map the all-sky, high dynamic range antenna response of the Murchison Widefield Array (MWA) and the Hydrogen Epoch of Reionization Array (HERA). We study deviations from numerical electromagnetic models and variation among t
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Eames, Evan. "Explorer l'aube cosmique et l'époque de réionisation avec le signal 21 cm." Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLEO008/document.

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Les simulations, de plus en plus, sont capables de saisir la complexité de l'époque de réionisation, durant laquelle l'hydrogène neutre de l'Univers a été ionisé par les premières sources lumineuses. Des bases de données représentatives de la multitude de signaux possibles seront nécessaires pour contraindre les paramètres des modèles quand des observations 21~cm seront disponibles. À cette fin, et en préparation des observations à venir sur des instruments comme SKA, nous avons développé une base de données de cones de lumières EoR haute-résolution (21ssd.obspm.fr), ainsi qu'une modélisation
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Eastwood, Michael William. "Searching for the Cosmic Dawn with the Hyperfine Structure Transition of Hydrogen." Thesis, 2019. https://thesis.library.caltech.edu/11547/1/eastwood_michael_2019.pdf.

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<p>The 21 cm hyperfine structure transition of neutral hydrogen promises to open a window into the first billion years of the Universe (z &#62; 6). With the exception of rare lines of sight towards exceptionally distant and luminous galaxies, this period of the universe's history remains largely unexplored. During this time the 21 cm transition is expected to be detectable as a 10--100 mK perturbation in the thermal Cosmic Microwave Background (CMB) spectrum.</p> <p>Due to the large field of view of low frequency radio telescopes (typically composed of dipole antennas) and the fact that the
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Raste, Janakee. "Analytical Formalism to Study the 21 cm Signal from Cosmic Dawn and Epoch of Reionization." Thesis, 2019. https://etd.iisc.ac.in/handle/2005/4746.

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The epoch of Cosmic Dawn and Reionization is one of the most important time periods of the universe when first sources of radiation like stars and galaxies were formed, and they changed the properties of their surrounding medium. 21 cm radiation emitted due to the hyperfine splitting of ground state of neutral hydrogen is one of the most important probes to study the state and dynamics of neutral medium during this epoch. I present an analytical formalism to compute the fluctuating component of the 21 cm signal from CD/EoR. I have used excursion set formalism to calculate the size distri
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Singh, Saurabh. "Observational Constraints on Global 21-cm Signal from the Epoch of Reionization." Thesis, 2018. https://etd.iisc.ac.in/handle/2005/5429.

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One of the most promising probes of Cosmic Dawn (CD) and Epoch of Reionization (EoR) is the rest-frame global 21-cm signal of neutral hydrogen (HI) produced by the intergalactic medium (IGM) prior to the end of the EoR at z 6. The SARAS 2 radiometer was purposely designed to detect the global 21-cm signal. In this thesis, we describe the radiometer, data modeling for foregrounds and systematics, and derive constraints on EoR from night sky data from SARAS 2 observations. We also discuss alternative means of detecting the global 21-cm signal using interferometers. We begin with an overv
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Books on the topic "Cosmic Dawn"

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Rhee, George. Cosmic Dawn. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-7813-3.

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Cosmic dawn: The origins of matter and life. Norton, 1989.

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Agency, European Space, ed. Planck: Looking back to the dawn of time. ESA Communication, 2009.

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Cosmic dawn: The search for the first stars and galaxies. Springer, 2013.

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John, Boslough, ed. The very first light: The true inside story of the scientific journey back to the dawn of the universe. BasicBooks, 1996.

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John, Boslough, ed. The very first light: The story of the nobel-prize winning journey back to the dawn of the universe. Basic Books, 2008.

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C, Lidman, Alloin D. M. 1944-, and International Astronomical Observatories in Chile., eds. The cool universe: Observing cosmic dawn : proceedings of the 2004 IAOC Workshop held in Valparaiso, Chile, 4-8 October 2004. Astronomical Society of the Pacific, 2005.

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Peering towards Cosmic Dawn. Cambridge University Press, 2018.

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Dawn Gray's Cosmic Adventure. Ransom, 2007.

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Chaisson, Eric J. Cosmic Dawn: The Origins of Matter and Life. Backinprint.com, 2000.

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Book chapters on the topic "Cosmic Dawn"

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Schilling, Govert. "1608 - 1708 The Dawn of Astronomy New Vistas and Cosmic Laws." In Atlas of Astronomical Discoveries. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-7811-0_1.

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FURLANETTO, STEVEN. "MAPPING THE COSMIC DAWN." In Adventures in Cosmology. WORLD SCIENTIFIC, 2011. http://dx.doi.org/10.1142/9789814313865_0006.

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"Cosmology at the Dawn of Western Thought." In Cosmic Understanding. Princeton University Press, 2021. http://dx.doi.org/10.2307/j.ctv1ddcxnw.5.

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"2. Cosmology at the Dawn of Western Thought." In Cosmic Understanding. Princeton University Press, 1987. http://dx.doi.org/10.1515/9780691228143-003.

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"Feedback Processes at Cosmic Dawn." In Joint Evolution of Black Holes and Galaxies. CRC Press, 2006. http://dx.doi.org/10.1201/9781420012095-14.

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Ferrara, Andrea, and Ruben Salvaterra. "Feedback Processes at Cosmic Dawn." In Joint Evolution of Black Holes and Galaxies. Taylor & Francis, 2006. http://dx.doi.org/10.1201/9781420012095.ch7.

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Loeb, Abraham, and Steven R. Furlanetto. "Other Probes of the First Galaxies." In The First Galaxies in the Universe. Princeton University Press, 2013. http://dx.doi.org/10.23943/princeton/9780691144917.003.0013.

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This chapter discusses several other ways to probe structures during the cosmic dawn. It first turns to secondary anisotropies of the cosmic microwave background, which are generated as the photons passed through gas during the cosmic dawn. Next, the chapter turns to diffuse backgrounds from the cosmic dawn, which typically include galactic emission lines, ranging from CO lines in the radio to the Lyman-α‎ line itself. Finally, the chapter observes that fossil structure from early galaxies remains in (or can be deduced from) the Milky Way or other nearby entities in the Local Group. This fossil structure includes the residual effects of feedback on the small satellite galaxies or globular clusters of the Milky Way, old low-mass stars that may have formed during the cosmic dawn and survive inside the Milky Way (or its halo), and remnant signatures of the early merger history of the Milky Way.
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"4. Milton's Cosmic Body: Doing Justice." In Sacramental Poetics at the Dawn of Secularism. Stanford University Press, 2008. http://dx.doi.org/10.1515/9780804779555-006.

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Terry Tatum, Eugene. "The Case for Cold Hydrogen Dark Matter." In Dark Matter - Recent Observations and Theoretical Advances [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97557.

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The novel ‘Cold Hydrogen Dark Matter’ (CHDM) theory is summarized in this chapter. Special attention is paid to the fact that current technology prevents us from directly observing extremely cold ground state atomic hydrogen when it is of sufficiently low density in deep space locations. A number of very recent observations in support of this theory are summarized, including cosmic dawn constraints on dark matter. The importance of the Wouthuysen-Field effect as a probable mechanism for CMB decoupling of hydrogen at cosmic dawn is also stressed. This mechanism does not require a non-baryonic dark matter intermediary. Several predictions for this theory are made for the coming decade of observations and simulations.
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"9 The Arrival of the Euro A Glimpse of Cosmic Dawn." In When Galaxies Were Born. Princeton University Press, 2022. http://dx.doi.org/10.1515/9780691241678-012.

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Conference papers on the topic "Cosmic Dawn"

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Zaldarriaga, Matias. "Cosmic Dawn." In 26th Solvay Conference on Physics: “Astrophysics and Cosmology”. WORLD SCIENTIFIC, 2016. http://dx.doi.org/10.1142/9789814759182_0004.

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Pritchard, Jonathan, Kiyotomo Ichiki, Andrei Mesinger, et al. "Cosmology from EoR/Cosmic Dawn with the SKA." In Advancing Astrophysics with the Square Kilometre Array. Sissa Medialab, 2015. http://dx.doi.org/10.22323/1.215.0012.

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Gasparrini, Dario, "Vaidehi S. Paliya", "Marco Ajello", and "Roopesh Ojha." "Gamma-ray Beacons at the Dawn of the Universe." In 35th International Cosmic Ray Conference. Sissa Medialab, 2017. http://dx.doi.org/10.22323/1.301.0659.

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Piro, L., J. W. den Herder, T. Ohashi, et al. "ORIGIN: Metal Creation and Evolution From The Cosmic Dawn." In GAMMA RAY BURSTS 2010. AIP, 2011. http://dx.doi.org/10.1063/1.3621820.

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Jones, Dayton L., T. Joseph W. Lazio, and Jack O. Burns. "Dark Ages Radio Explorer mission: Probing the cosmic dawn." In 2015 IEEE Aerospace Conference. IEEE, 2015. http://dx.doi.org/10.1109/aero.2015.7118941.

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Koopmans, Leon, J. Pritchard, G. Mellema, et al. "The Cosmic Dawn and Epoch of Reionisation with SKA." In Advancing Astrophysics with the Square Kilometre Array. Sissa Medialab, 2015. http://dx.doi.org/10.22323/1.215.0001.

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Xu, Jiaqin, Fengquan Wu, Cong Zhang, et al. "Probing Cosmic Dawn in a Global Spectrum Detection System." In 2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE). IEEE, 2021. http://dx.doi.org/10.1109/isape54070.2021.9753468.

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Jones, Dayton L. "Technologies for low radio frequency observations of the Cosmic Dawn." In 2014 IEEE Aerospace Conference. IEEE, 2014. http://dx.doi.org/10.1109/aero.2014.6836175.

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Chapman, Emma, Anna Bonaldi, Geraint Harker, et al. "Cosmic Dawn and Epoch of Reionization Foreground Removal with the SKA." In Advancing Astrophysics with the Square Kilometre Array. Sissa Medialab, 2015. http://dx.doi.org/10.22323/1.215.0005.

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Chakraborty, Arnab, Aishrila Mazumder, and Abhirup Datta. "Investigating Signal Recovery Challenges from Cosmic Dawn and Reionisation using SKA-1 Low." In 2019 URSI Asia-Pacific Radio Science Conference (AP-RASC). IEEE, 2019. http://dx.doi.org/10.23919/ursiap-rasc.2019.8738412.

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