A5077225813- Ancient and Medieval Archaeology Studies
- Historical and Archaeological Studies
- Eurasian Exchange Networks
- Byzantine Studies and History
- Gamma-ray bursts and supernovae
- Archaeological Research and Protection
- Astrophysics and Cosmic Phenomena
- Pulsars and Gravitational Waves Research
- Ancient Mediterranean Archaeology and History
- Linguistics and language evolution
- Stellar, planetary, and galactic studies
- Archaeology and ancient environmental studies
- Astronomy and Astrophysical Research
- Genetic diversity and population structure
- Hungarian Social, Economic and Educational Studies
- Metallurgy and Cultural Artifacts
- Geological Formations and Processes Exploration
- Forensic and Genetic Research
- Astro and Planetary Science
- Maritime and Coastal Archaeology
- Yersinia bacterium, plague, ectoparasites research
- Medieval European History and Architecture
- Historical, Religious, and Philosophical Studies
- Historical Geopolitical and Social Dynamics
- Solar and Space Plasma Dynamics
Romanian Academy
2009-2024
Institute of Archaeology
2022
University of Pannonia
2020
Pázmány Péter Catholic University
2020
Sapientia Hungarian University of Transylvania
2020
University of Debrecen
2020
Hungarian National Museum
2020
Max Planck Institute for Astrophysics
2012-2018
Queen's University Belfast
2013-2018
Queens University
2017
We present optical light curves, redshifts, and classifications for 365 spectroscopically confirmed Type Ia supernovae (SNe Ia) discovered by the Pan-STARRS1 (PS1) Medium Deep Survey. detail improvements to PS1 SN photometry, astrometry calibration that reduce systematic uncertainties in distances. combine subset of 279 ($0.03 < z 0.68$) with useful distance estimates from SDSS, SNLS, various low-z HST samples form largest combined sample consisting a total 1048 ranging $0.01 2.3$, which we...
The Public European Southern Observatory Spectroscopic Survey of Transient Objects (PESSTO) began as a public spectroscopic survey in April 2012. We describe the data reduction strategy and products which are publicly available through ESO archive Data Release 1 (SSDR1). PESSTO uses New Technology Telescope with EFOSC2 SOFI to provide optical NIR spectroscopy imaging. target supernovae transients brighter than 20.5mag for classification. Science targets then selected follow-up based on...
We present two hydrogen-rich superluminous supernovae (SLSNe), namely SN2013hx and PS15br. These objects, together with SN2008es are the only SLSNe showing a distinct, broad Halpha feature during photospheric phase also do not show any sign of strong interaction between fast-moving ejecta circumstellar shells in their early spectra. Despite PS15br peak luminosity is fainter than other spectrophotometric evolution similar to different supernova space. group all them as II hence distinct from...
Huns, Avars, and conquering Hungarians were migration-period nomadic tribal confederations that arrived in three successive waves the Carpathian Basin between 5th 9th centuries. Based on historical data, each of these groups are thought to have from Asia, although their exact origin relation other ancient modern populations been debated. Recently, hundreds genomes analyzed Central Mongolia, China, which we aimed identify putative source for above-mentioned groups. In this study, sequenced 9...
We use 1169 Pan-STARRS supernovae (SNe) and 195 low-$z$ ($z < 0.1$) SNe Ia to measure cosmological parameters. Though most lack spectroscopic classifications, in a previous paper (I) we demonstrated that photometrically classified can be used infer unbiased parameters by using Bayesian methodology marginalizes over core-collapse (CC) SN contamination. Our sample contains nearly twice as many the largest compilation. Combining with Cosmic Microwave Background (CMB) constraints from Planck,...
We present ten medium-resolution, high signal-to-noise ratio near-infrared (NIR) spectra of SN 2011fe from SpeX on the NASA Infrared Telescope Facility (IRTF) and Gemini Near-Infrared Spectrograph (GNIRS) North, obtained as part Carnegie Supernova Project. This data set constitutes earliest time-series NIR spectroscopy a Type Ia supernova (SN Ia), with first spectrum at 2.58 days past explosion covering -14.6 to +17.3 relative B-band maximum. C I {\lambda}1.0693 {\mu}m is detected in...
We report on our findings based the analysis of observations Type II-L supernova LSQ13cuw within framework currently accepted physical predictions core-collapse explosions. was discovered a day explosion, hitherto unprecedented for supernovae. This motivated comparative study II-P and supernovae with relatively well-constrained explosion epochs rise times to maximum (optical) light. From sample twenty such events, we find evidence positive correlation between duration peak brightness. On...
We present nine near-infrared (NIR) spectra of supernova (SN) 2005cf at epochs from -10 d to +42 with respect B-band maximum, complementing the existing excellent data sets available for this prototypical Type Ia SN other wavelengths.The show a time evolution and spectral features characteristic normal SNe, as illustrated by comparison SNe 1999ee, 2002bo 2003du.The broad-band energy distribution (SED) is studied in combined ultraviolet (UV), optical NIR five between ∼ 8 before 10 after...
We present photometry and spectroscopy of nine Type II-P/L supernovae (SNe) with redshifts in the 0.045 < z 0.335 range, a view to re-examining their utility as distance indicators. Specifically, we apply expanding photosphere method (EPM) standardized candle (SCM) each target, find that both methods yield distances are reasonable agreement other. The current record-holder for highest-redshift spectroscopically confirmed SN II-P is PS1-13bni (z = +0.009 -0.012), illustrates promise II SNe...
Based on optical imaging and spectroscopy of the Type II-Plateau SN 2013eq, we present a comparative study commonly used distance determination methods based II supernovae. The occurrence 2013eq in Hubble flow (z = 0.041 +/- 0.001) prompted us to investigate implications difference between "angular" "luminosity" distances within framework expanding photosphere method (EPM) that relies upon relation flux angular size yield distance. Following re-derivation basic equations EPM for SNe at...
The fortuitous occurrence of a type II-Plateau (IIP) supernova, SN 2014bc, in galaxy for which distance estimates from number primary indicators are available provides means with to cross-calibrate the standardised candle method (SCM) IIP SNe. By applying calibrations literature we find line most precise measurement NGC 4258 based on Keplerian motion masers (7.6 ± 0.23 Mpc), albeit significant scatter. We provide an alternative local SCM calibration by only considering SNe that have occurred...
Summary Huns, Avars and conquering Hungarians were Migration Period nomadic groups which arrived in three successive waves the Carpathian Basin between 5 th 9 centuries. Based on historical data each of these are thought to have from Asia, although their exact origin relation other ancient modern populations has been debated. In this study we sequenced Hun, 143 Avar 113 Hungarian conquest period samples, identified core populations, representing immigrants period, with no recent European...
Stable isotope (δ15N, δ13C) and 14C results from two early medieval cemeteries are presented evaluated in this study order to draw conclusions about diet, social differentiation chronology the Carpathian Basin during Avar period (7th–9th century CE). At Tiszafüred Hortobágy, contemporaneous but distinct groups buried their deceased. The reflect basic diet deviations between communities, which originated alternative subsistence strategies and-or differences. samples fit well into general...
In the late Avar period (eighth to ninth century ad ), vast quantities of utilitarian artefacts were produced in series Carpathian Basin, a phenomenon not seen since end Roman period. The distribution these articles reflects only region's settlement pattern, but also how disseminated. communication network Basin underwent significant transformation between early and period: its major nodes, equated with population centres necessarily elite centres, contributed moulding social cultural milieu...
Die Fundstelle Gheţărie („Jégverem“) liegt an der äußersten Grenze Terrasse des Flusses Crişul Repede, bei Stadt Oradea. Heute ist die gesamte teilweise von den Häusern Straßen Vavilov und Meiului bzw. einer sich seit Jahren im Bau befindlichen orthodoxen Kirche überbaut. Im 20. Jahrhundert wurden hier Fr. Ardos N. Chidioşan mehrere völkerwanderungszeitliche mittelalterliche Gräber gefunden. Das typologische Netz Beigaben völkerwanderungszeitlichen gestattet ihre Einordnung in zweite Hälfte...
Altogether, nine sites dated to the 7th/8–9th/10th centuries have been recorded during planned and rescue excavations fieldwalking campaigns in Sighișoara microregion, which lies inner part of Transylvanian Basin, almost at centre a distinct geological tectonic unit. Only four these excavated (Sighișoara-Weinberg / Dealul Viilor: ‘Settlement Siedlung’, ‘Funerary site Gräberfeld’, Albești-Cetățea, Albești-Școală), while others were identified only through surveys, i.e. their extent character...
Nationalist theories of the 18th‑20th centuries and concepts nation‑state characteristic to this period tried intensively homogenise notions space, in case regard, territories like geographically independent Transylvania are no exception. The homogenisation generalisation, which sometimes occur current archaeology as well – even, when not intended go back a much earlier period, already present at ideological roots space their visual, graphic representations: maps. Based on premise, after...
To the southeast of Roman town Napoca, 26 graves from 10th century were discovered during excavation a Roman-period cemetery between 1985 and 1986. In southern, slanted part funerary site, individual grave 25, richest most varied depositions only horse burial in cemetery, was excavated. The important object tomb’s very goods material is clearly leather sabretache, which ornamented with different types sizes mounts by masters/leather craftsmen century. Based on available data, decorated...