DARK

This paper, led by Aprajita H. from DARK in collaboration with a team of international scientists, offers an unprecedented window into the multiwavelength properties of a Tidal Disruption Event, ASASSN-15oi, during its first 8 years of evolution. Recent studies have unveiled that delayed radio flares in TDEs are a common phenomenon, and ASASSN-15oi was the first one to show two distinct radio flares at ~ 6 months and ~4 years post-discovery. With only a ~100 TDEs discovered to date, and even fewer with detections across the electromagnetic spectrum, they present an extensive dataset including radio, optical, UV and X-ray observations. The late-time evolution of ASASSN-15oi challenges the existing models, highlighting the need for long-term monitoring and more sophisticated models to understand the late stages of TDEs.


https://ui.adsabs.harvard.edu/abs/2024arXiv240719019H/abstract

Join Jo Verwohlt of DARK for an evening at HUSET during the Exploring Exoplanet science festival! On Thursday, August 1st at 7 PM, experience the perfect blend of improv comedy and fascinating scientific talks. Best of all, tickets are free! Don't miss this unique opportunity to laugh and learn under the stars. ✨

Registration for tickets: https://www.eventbrite.dk/e/exploring-exoplanets-x-improv-comedy-copenhagen-tickets-936370006897?utm-campaign=social&utm-content=attendeeshare&utm-medium=discovery&utm-term=listing&utm-source=cp&aff=ebdsshcopyurl

In this paper, Sarah Pearson from DARK forecasts the population of missing stellar streams in Milky Way-type galaxies. She finds that we've detected less than 10% of all streams in the Milky Way thus far, and that LSST can find the remaining streams. Particularly the predicted population of missing streams far from the galactic center, which are all from from accreted globular clusters, can be useful in the quest for interactions between stellar streams and dark matter subhalos.

Link to article: https://arxiv.org/abs/2405.15851

The Bloom festival kicks off today at 4pm! If you're in the area, be sure to visit Søndermarken and explore Honey Biba's installation, 'Matters of Time,' created in collaboration with DARK and KØS Museum of Art in Public Spaces.

https://www.bloom.ooo/program/matters-of-time
More about the installation (In Danish)

Matters of Time Tiden er relativ, flydende og usynlig. Alligevel kan den måles utroligt præcist. Til Bloom 2024 har kunstner Honey Biba Beckerlee skabt en…

In this paper, Cecilia Bacchini from DARK introduces a new method (Q3D < 1) for studying instability in galaxy gas discs. The findings show that while this instability is significant for star formation and turbulence in distant, early galaxies, it has less impact on present-day galaxies, suggesting that other factors are also important.

https://arxiv.org/pdf/2405.00103

Today, guest researcher Steven Thorp from Stockholm University delivered a presentation at DARK titled "Pop-cosmos: Comprehensive Forward Modeling of Photometric Galaxy Survey Data."
A novel pop-cosmos framework connects photometry to galaxy evolution, modeling various galaxy properties through simulation-based inference, facilitating accurate redshift estimations and insights into galaxy physics for upcoming photometric surveys.

Have a look at this paper, which showcases two Type Ia supernovae in a single galaxy, representing the furthest observation of such an occurrence. This discovery holds significant implications for accurately measuring the Hubble Constant and advancing time-delay cosmography.

https://arxiv.org/abs/2404.02139

Curious about both astrophysics and art? Check out Jo Verwohlt's discussion with Danmarks Radio P1 about Anish Kapoor's latest exhibition at ARKEN Museum of Contemporary Art.

(In Danish):

Anmelderne | Blodrødt sand og sorte huller på ARKEN | DR LYD Verdensstjernen Anish Kapoor, den britisk-indiske kunstner der boltrer sig i pigment, stål og voks, udfordrer vores forståelse af form, perspektiv og virkeligheden. Han er aktuel på ARKEN Museum for Samtidskunst med udstillingen Unseen, hans første soloudstilling i Skandinavien. Men yder de Kapo...

Congratulations to Sarah Pearson on receiving the ERC (European Research Council) Starting Grant, which will enable her to map dark matter by comparing statistical models with data from, among other things, star streams.💫

Read more about her achievement on DARK's website.

Sarah Pearson receives an ERC starting grant NBI Assistant Professor has been awarded an ERC starting Grant from the European Commission. 

Christa Gall, along with Jens Hjorth and Aleksandra Leśniewska of DARK, contributed to this study about cold interstellar medium (ISM) removal from early-type galaxies. It was noticed that both dust and gas components are removed from these galaxies at similar rates.
This indicates that type Ia supernova outflows, ionization by evolved low-mass stars, or active galactic nuclei are mechanisms contributing to the loss of ISM.

https://doi.org/10.3847/1538-4357/ad1b52