Group

NWO_logo_nl-300x149In 2016 I started a new research group at the Anton Pannekoek Institute for Astronomy (API) of the University of Amsterdam, owing to an NWO Vidi grant. The API is a wonderful and vibrant institute to work at, and Amsterdam is an exciting city to live in.

My Vidi project focuses on studying the physics of accretion flows around neutron stars and black holes in a relatively unexplored regime between bright outbursts (very active accretion) and quiescence (very little accretion). The main aims is to perform a systematic, in-depth analysis of this transition regime using radio, infrared, optical, UV and X-ray observations from various Earth-based and space-based telescopes. The prime instruments we work with in my group are the Hubble Space Telescope, NuSTAR, Chandra, XMM-Newton, Swift and NICER satellites, the Isaac Newton Telescope (2.5m),  Magellan (6.5-m), Gemini (8-m), and Very Large Telescope (8-m) observatories, as well as the Very Large Array and Australia Telescope Compact Array radio facilities.

Current team members:

Stefanie Fijma: PhD candidate, probing binary evolution through multi-wavelength observations of binaries with compact objects (2021-present).

Giorgos Zervas Koukogias: Master student, connecting the X-ray spectrum of neutron star X-ray binaries to their radio properties (2021-2022).

Konstantinos Zafeiropoulos: Master student, high-resolution X-ray observations of accretion disk atmospheres and winds in neutron star X-ray binaries (2021-2022).

Sophie Schot: Undergraduate student technical physics at Fontys University of Applied Sciences, the accretion flow of a low-luminosity black hole X-ray binary (2021-2022).

Osman Ahmed: Lecturer at Debre Tabor University (Ethiopia), X-ray observations of very-faint X-ray transients (2019-present).

Former group members:

Jari van Opijnen: Post-master research student, the X-ray/nIR correlation of X-ray binaries (2020-2021).

Luna van Haastere: Master student, H-alpha nebulae around X-ray binaries (2020-2021). Now PhD candidate at the University of Leiden, NL.

Jakob van den Eijnden: PhD candidate, X-ray/nIR/radio observations of accreting black holes and neutron stars (2016-2020). Now Junior Research Fellow at St. Hilda’s College, Oxford, UK.

Aastha Parikh: postdoc, X-ray and UV observations of accreting black holes and neutron stars (2019-2020). Now Quantitative Risk Analyst at ABN Amro bank.

Mitchell Stoop: Master student, X-ray/UV/nIR/radio observations of an accreting black hole candidate (2019-2020). Now PhD candidate at the University of Amsterdam.

Juan Hernández Santisteban: postdoc, UV/optical/nIR observations of accreting black holes, neutron stars and white dwarfs (2016-2019). Now lecturer at the University of St. Andrews, Schotland.

Khaled Alizai: PhD candidate at the Technical University of Denmark, multi-observatory observations of thermonuclear X-ray bursts (2019).

Maria Georganti: Master student, X-ray/UV/nIR observations of a quiescent black hole candidate (2018-2019). Now PhD candidate at the University of Southampton, UK.

Alexis Andres: Undergraduate student (ASPIRE program), X-ray flares from the supermassive black hole Sgr A* (2019). Now Master student at UNAM, Mexico.

Jelle Groot: Undergraduate (bachelor) student, fast transient X-ray events in the center of the Milky Way (2019).

Marieke van Etten: Undergraduate (bachelor) student, transient X-ray binaries in the Galactic center region (2019).

Stefanie Fijma: Undergraduate (bachelor) student, the X-ray/radio correlation of neutron star X-ray binaries (2019). Now PhD candidate at the University of Amsterdam.

Jorinde Kleverlaan: Undergraduate (bachelor) student, the X-ray/radio correlation of neutron star X-ray binaries (2019). Now PhD candidate at the NUI Galway, Ireland.

Elena López Navas: Post-master student (ERASMUS+ program), X-ray/UV observations of accreting neutron stars and black holes (2018). Now PhD candidate at the University of Valparaiso, Chile.

Alessio Marino: Master student (ERASMUS+ program), neutron star mass/radius constraints from X-ray observations of quiescent X-ray binaries (2018). Now post-doctoral researcher at the University of Palermo, Italy.

Levi Kok: Undergraduate (bachelor) student, fast transient X-ray events in the center of the Milky Way (2018).

Bilal Belhach: Undergraduate (bachelor) student, X-ray observations of accreting neutron stars (2018).

Mick Rustenburg: Undergraduate (bachelor) student, optical/nIR observations of an accreting white dwarf (2018).