The members of the Institute, and in particular all students and postdocs, meet every Friday from 14:00-15:00 in the 2nd Floor Coffee Room, to discuss interesting recent science papers and exciting new astrophysics discoveries, while having free, slightly unhealthy, food. Please contact Elias Kyritsis or Nikos Mandarakas to lead a discussion. The schedule for the coming weeks follows:
- Friday 02 June 2023 - Ruchika Dhaka
"Spectral and Timing Evolution of Black Hole X-ray Binary GRS1915+105: Insights from Quasi-Periodic Oscillations and Spectral States" - Friday 19 May 2023 - Fernandez Aranda Roman
"Spatially resolved dust properties and quasar-galaxy decomposition of HyLIRG at redshift 4.4" - Friday 12 May 2023 - Triantafyllou Nikos
"Photometric Redshift Estimation with Convolutional Neural Networks and Galaxy Images: A Case Study of Resolving Biases in Data-Driven Methods" - Friday 05 May 2023 - Andreas Tersenov
"Probabilistic Mass Mapping with Neural Score Estimation" - Friday 28 April 2023 - Droudakis Konstantinos
"Observing the onset of the accretion wake in Vela X-1" - Friday 31 March 2023 - Maharana Siddharth
"SPLOT: a Snapshot survey for Polarised Light in Optical Transients?" - Friday 24 March 2023 - Daoutis Charalambos
"Evidence for Black Holes in Green Peas from WISE colors and variability?" - Friday 17 March 2023 - Dr Paolo Bonfini
"ChatGPT: i.e., how does it feel to be outsmarted by a machine?" - Friday 10 March 2023 - Diego Alvarez-Ortega
"Classifying Unidentified X-Ray Sources in the Chandra Source Catalog Using a Multiwavelength Machine-learning Approach" - Friday 3 March 2023 - Lofaro Cristina Maria
"High-resolution Hubble Space Telescope Imaging Survey of Local Star-forming Galaxies. I. Spatially Resolved Obscured Star Formation with Hα and Paschen-β Recombination Lines" - Friday 24 February 2023 - Mandarakas Nikolaos
"Dust polarization spectral dependence from Planck HFI data. Turning point on CMB polarization foregrounds modelling" - Friday 17 February 2023 - Korkidis George
1. "A Test of the Cosmological Principle with Quasars"
2. "A Challenge to the Standard Cosmological Model" - Friday 10 February 2023 - Elias Kyritsis
"The Redshift Evolution of Ultraluminous X-Ray Sources out to z 0.5: Comparison with X-Ray Binary Populations and Contribution to the Cosmic X-Ray Background" - Friday 27 January 2023 - Romanopoulos Stylianos
"Non-parametric inference of the neutron star equation of state from gravitational wave observations" - Friday 9 December 2022 - Zapartas Manos
"Stripped-envelope supernovae from single and binary massive stars, and their companions" - Friday 2 December 2022 - Tsouros Alexandros
"A method for reconstructing the Galactic magnetic field using dispersion of fast radio bursts and Faraday rotation of radio galaxies" - Friday 25 November 2022 - Loudas Nikos
"The Odd Dark Matter Halos of Isolated Gas-rich Ultradiffuse Galaxies" - Friday 18 November 2022 - Konstantinou Anna
"Effects of feedback on galaxies in the VELA simulations: elongation, clumps and compaction" - Friday 04 November 2022 - Felix Poetzl
"WISDOM Project - XIII. Feeding molecular gas to the supermassive black hole in the starburst AGN-host galaxy Fairall 49" - Friday 03 June 2022 - Zezas Andreas
"First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way"
"First Sagittarius A* Event Horizon Telescope Results. III. Imaging of the Galactic Center Supermassive Black Hole" - Friday 20 May 2022 - Kovlakas Konstantinos
"POSYDON: A General-Purpose Population Synthesis Code with Detailed Binary-Evolution Simulations" - Friday 06 May 2022 - Antoniadis John
"Job applications and career development for PhDs and young astronomers" - Friday 01 April 2022 - Daoutis Charalampos
"Self-consistent Predictions for LIER-like Emission Lines from Post-AGB Stars" - Friday 18 March 2022 - Politakis Charalampos
Deep Space Network - Friday 11 March 2022 - Droudakis Konstantinos
"On the Mass and Magnetic Field of the Neutron Star in the Ultraluminous X-Ray Source NGC 300 ULX1" - Friday 25 February 2022 - Aguilera Dena D.R.
"Partial-envelope stripping and nuclear-timescale mass transfer from evolved supergiants at low metallicity" - Friday 18 February 2022 - Blinov Dmitry
"The discovery of a radio galaxy of at least 5 Mpc" - Friday 11 February 2022 - Mandarakas Nikos
"Correlated orientations of the axes of large quasar groups on Gpc scales" - Friday 04 February 2022 - Romanopoulos Stelios
"Gravitational Waves: Detection, Analysis and Parameter Estimation" - Friday 28 January 2022 - Chanlaridis Savvas
"Eccentric millisecond pulsars by resonant convection"
Presentation: [PDF file] - Friday 17 December 2021 - Tsouros Alexandros
"Charting nearby dust clouds using Gaia data only" - Friday 10 December 2021 - Papadaki Katerina
"Hamiltonian Neural Networks" - Friday 12 November 2021 - Kyritsis Elias
"Star formation rates and stellar masses from machine learning"
Presentation: [PDF file] - Friday 29 October 2021 - Mandarakas Nikolaos
"A Candidate Kiloparsec-scale Quasar Pair at z = 5.66" - Friday 15 October 2021 - Korkidis Georgios
"Clusters have edges: the projected phase-space structure of SDSS redMaPPer clusters?" - Friday 11 June 2021 - Konstantinou Anna
"The Phosphene Controversy: Is it Phosphene? Is there life on Venus?" - Friday 28 May 2021 - Fernandez Aranda Roman
"A hidden population of high-redshift double quasars unveiled by astrometry" - Friday 14 May 2021 - Skalidis Rafail
"High-accuracy estimation of magnetic field strength in the interstellar medium from dust polarization" - Friday 16 April 2021 - Romanopoulos Stylianos
"The POEMMA (Probe of Extreme Multi-Messenger Astrophysics) Observatory" - Friday 2 April 2021 - Mandarakas Nikolaos
"Integrated Optical Polarization of nearby Galaxies" - Friday 26 March 2021 - Aguilera Dena David
"Maximum Black Hole mass across Cosmic Time"
Presentation: [PDF file] - Friday 19 March 2021 - Politakis Charalampos
"Formation of millisecond pulsars with helium white dwarfs, ultra-compact X-ray binaries and gravitational wave sources"
Presentation: [PDF file] - Friday 05 March 2021 - Konstantinou Anna
"The physical and the geometrical properties of simulated cold HI structures"
Presentation: [PDF file] - Friday 26 February 2021 - Liodakis Giannis
"High-energy emission from tidal disruption events in active galactic nuclei" - Friday 19 February 2021 - Fernandez Aranda Roman
"Half of the most luminous quasars may be obscured: Investigating the nature of WISE - selected hot dust obscured galaxies" - Friday 12 February 2021 - Leonidaki Ioanna
"Modeling particle acceleration and non-thermal emission in supernova remnants" - Friday 05 February 2021 - Blinov Dmitry
"Evidence of the Gaia--VLBI position differences being related to radio source structure" - Friday 11 December 2020 - Kiehlmann Sebastian
"The Relativistic Jet Dichotomy and the End of the Blazar Sequence" - Friday 04 December 2020 - Casadio Carolina
"An excess of small-scale gravitational lenses observed in galaxy clusters" - Friday 20 November 2020 - Tsouros Alexandros
"A bright millisecond-duration radio burst from a Galactic magnetar"
Presentation: [PDF file] - Friday 13 November 2020 - Romanopoulos Stylianos
"Evidence for a Supergalactic Structure of Magnetic Deflection Multiplets of Ultra-High Energy Cosmic Rays" - Friday 06 November 2020 - Mandarakas Nikolaos
- "The use of light polarization in weak-lensing inversions"
Presentation: [PDF file] - Friday 30 October 2020 - Kyritsis Elias
"PS1-STRM: Neural network source classification and photometric redshift catalogue for PS1 3π DR1"
Presentation: [PDF file] - Friday 23 October 2020 - Kypriotakis Ioannis
"The WALOPNorth Instrument".
Presentation: [PDF file] - Friday 16 October 2020 - Kovlakas Konstantinos
"Formation of GW190521 via gas accretion onto population III stellar black hole remnants born in high-redshift minihalos"
Presentation: [PDF file] - Friday 09 October 2020 - Kouroumpatzakis Konstantinos
"An uncertainty principle for star formation - III. The characteristic emission time-scales of star formation rate tracers" - Friday 02 October 2020 - Korkidis Georgios
"On the Mass Distribution of the Intra-Cluster Light in Galaxy Groups and Clusters"
Presentation: [PDF file] - Friday 25 September 2020 - Kopsacheili Maria
"First 3D Morpho-Kinematic model of Supernova Remnants. The case of VRO 42.05.01 (G 166.0+4.3)"
Presentation: [PDF file] - Friday 18 September 2020 - Raphael Skalidis
"H I filaments are cold and associated with dark molecular gas. HI4PI-based estimates of the local diffuse CO-dark H2 distribution"
Presentation: [PDF file] - Thursday 11 June 2020 - Elias Kyritsis
"Identifying new X-ray binary candidates in M31 using random forest classification"
Presentation: [PDF file] - Friday 5 June 2020 - Vincent Pelgrims
"A Galactic - scale gas wave in the solar neighbourhood" - Friday 29 May 2020 - Kouroumpatzakis Kostantinos
"Connecting the metallicity dependence and redshift evolution of high-mass X-ray binaries" - Friday 15 May 2020 - Casadio Carolina
"A transition from parabolic to conical shape as a common effect in nearby AGN jets"
Presentation: [PDF file] - Friday 8 May 2020 - Gkimisi Katia
"Eliminating artefacts in polarimetric images using deep learning"
Presentation: [PDF file] - Friday 10 April 2020 - Stylianos Romanopoulos
"Depth of maximun of air-shower profiles at the Pierre Auger Observatory. I. Measurements at energies above 1017,8 eV."
Presentation: [PDF file] - Friday 6 Mar 2020 - Ioannis Kypriotakis
"Assessment of astronomical images using combined machine learning models" - Friday 28 Feb 2020 - Sebastian Kiehlmann
"Dissecting the regions around IceCube high-energy neutrinos: growing evidence for the blazar connection" - Friday 21 Feb 2020 - George Korkidis
"Early - type Host Galaxies of Type Ia Supernovae. II. Evidence for Luminosity Evolution in Supernova Cosmology" - Friday 14 Feb. 2020 - Nikos Mandarakas
"Origin of a massive hyper-runaway subgiant star LAMOST-HVS1 – implication from Gaia and follow-up spectroscopy"
Presentation: [PDF file] - Friday 7 Feb. 2020 - Raphael Skalidis
"Mapping the Magnetic Interstellar Medium in Three Dimensions over the Full Sky with Neutral Hydrogen" - Friday 17 Jan. 2020 - Dmitry Blinov
"The vanishing and appearing sources during a century of observations project: I. USNO objects missing in modern sky surveys and follow-up observations of a "missing star" - Friday 20 Dec. 2019 - Konstantinos Kovlakas
"First results from the TNG50 simulation: the evolution of stellar and gaseous discs across cosmic time"
Presentation: [PDF file] - Friday 13 Dec. 2019 - Maria Kopsacheili
"A wide star–black-hole binary system from radial-velocity measurements"
Presentation: [PDF file] - Friday 6 Dec. 2019 - Theo Tsantirakis
"A 40-billion solar mass black hole in the extreme core of Holm 15A, the central galaxy of Abell 85"
Presentation: [PDF file]