From the 4 of 9 linked papers with an AI index.
9 papers
A geometrical-optics analogy for gravitational lensing using axicon-type lenses
Santiago Hernández-DÃaz, Ãngel S. Sanz
Gravitational lensing is often introduced through the bending of light by mass, but its geometrical nature can be difficult to visualize without invoking the full machinery of gene…
Cataclysmic variables from SRG/eROSITA: new systems from eRASS1
A. D. Schwope, J. Brink, D. A. H. Buckley +12
The paper presents a new sample of 156 cataclysmic variable stars identified from the first eROSITA all‑sky X‑ray survey using a Random Forest classifier and follow‑up spectroscopy…
SRG/eROSITA X-ray selected cataclysmic variable candidates observed in SDSS-V DR20
J. Brink, A. D. Schwope, K. G. Pradeep +35
The paper presents spectroscopic observations from SDSS‑V of cataclysmic variable candidates identified via X‑ray detections in the SRG/eROSITA eRASS1 and eRASS3 surveys, assemblin…
Unveiling the period-bounce population of cataclysmic variables: Spectroscopic and time-domain follow-up of eROSITA-selected candidates
S. Hernández-DÃaz, B. Stelzer, A. Schwope +9
The paper presents spectroscopic and time‑domain follow‑up of eROSITA‑selected cataclysmic variable candidates, confirming 24 new systems and showing they are consistent with perio…
The SRG/eROSITA All-Sky Survey DR2: Cumulative X-ray catalogues from the first three surveys and multi-wavelength counterparts in the western Galactic hemisphere
M. E. Ramos-Ceja, G. Lamer, M. Salvato +111
The paper presents the second data release of the SRG/eROSITA all‑sky survey, providing catalogues of nearly two million X‑ray sources (point‑like and extended) from the first thre…
Balmer decrements as a new diagnostic for period-bounce Cataclysmic Variable stars
Santiago Hernández-DÃaz, Beate Stelzer, Daniela Muñoz-Giraldo
Cataclysmic variable stars (CVs) evolve toward shorter orbital periods () until they reach a minimum near min. Beyond this point, the…