エピソード

  • Episode 11: Whirling planes, wandering black holes and alien supernovae
    2025/05/12

    In this episode, Michelle and Payel discuss whether wandering intermediate black holes are mythical or not, how planes of satellites may form from cosmic accretion, how to form double hot Jupiters, whether Kelper's supernova remnant is an 'alien', whether Unions I is the faintest star cluster or the faintest galaxy, and just how old our globular clusters are. Listen below or check us out on Spotify, Apple Podcasts, or wherever you get your podcasts.

    You can check out all the papers we discuss this episode using the links below!

    Wandering intermediate-mass black holes in Milky Way-mass galaxies in cosmological simulations: myth or reality? - Floor van Donkelaar

    Zippers and Twisters: Planes of Satellite Galaxies Emerge from Whirling and Shocking Gas Streams in the Cosmic Web - Janvi P. Madhani et al.

    Double Hot Jupiters Through ZLK Migration - Yurou Liu, Tiger Lu and Malena Rice

    Alien-Type-Ia supernovae from the Milky Way merger history and one possible candidate -- Kepler's supernova - Wenlang He et al.

    Reevaluating UMa3/U1: star cluster or the smallest known galaxy? - Scot Devlin et al.

    The Absolute Age of Milky Way Globular Clusters - Jiaqi Ying et al.

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    40 分
  • Episode 10 - Mixing dark matter, surviving black holes and hunting for planets
    2025/04/28

    This episode, Michelle and Payel delve into the latest constraints on mixed dark matter from the Lyman alpha forest, what happens to stars that get a little too close to a black hole, how machine learning can help identify stars likely to host an Earth-like planet, studying the dark ages from the Moon and witnessing the birth of nuclear star clusters! Check out the episode and papers below!

    Constraining Mixed Dark Matter models with high redshift Lyman-alpha forest data - Olga Garcia-Gallego et al.

    Black Hole Survival Guide: Searching for Stars in the Galactic Center That Endure Partial Tidal Disruption - Rewa Clark Bush et al.

    Earth-like planet predictor: A machine learning approach - Jeanne Davoult et al.

    Detecting the 21 cm Signal of the Cosmic Dark Ages - Willow Smith and Jonathan Pober

    Evidence of star cluster migration and merger in dwarf galaxies - Mélina Poulain et al.

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    36 分
  • Episode 9 – Slowing bars, growing black holes, pasta sauces and AI
    2025/04/14

    In this episode, Payel and Michelle discuss how you can slow down a galaxy’s bar, scaling relations for black holes, whether we can use intracluster light to learn about dark matter, little red dots, AI cosmologists and pasta sauce for all your plotting needs! Check out our episode – and the papers that inspired it – below.

    Tidal interaction can stop galactic bars: on the LMC non-rotating bar– Óscar Jiménez-Arranz & Santi Roca-Fabrega

    Evidence for evolutionary pathway-dependent black hole scaling relations – Jonathan Cohn et al.

    pastamarkers 2: pasta sauce colormaps for your flavorful results – The PASTA collaboration

    Intracluster light is a biased tracer of the dark matter distribution in clusters – J. Butler et al.

    Formation of the Little Red Dots from the Core-collapse of Self-interacting Dark Matter Halos – Fangzhou Jiang et al

    The AI Cosmologist I: An Agentic System for Automated Data Analysis – Adam Moss

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    34 分
  • Episode 8 – Cosmology, pulsars and dark matter in disk galaxies
    2025/03/31

    In this episode, Payel and Michelle discuss the longest period pulsar, the formation of nuclear star clusters, the recent data releases from ACT and DESI, dark spiral arms and the problem with rotation curves.

    Papers in this episode:

    The discovery of a 41-second radio pulsar PSR J0311+1402 with ASKAP – Yuanming Wang et al.

    Seeding Cores: A Pathway for Nuclear Star Clusters from Bound Star Clusters in the First Billion Years – Fred Angelo Batan Garcia

    Dark matter spiral arms in Milky Way-like halos – Marcel Benet et al.

    Data Release 1 of the Dark Energy Spectroscopic Instrument – The DESI collaboration

    The Atacama Cosmology Telescope: DR6 Constraints on Extended Cosmological Models – Ermina Calabrese et al

    Decoding the Galactic Twirl: The Downfall of Milky Way-mass Galaxies Rotation Curves in the FIRE Simulations – Xiaowei Ou et al.

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    37 分
  • Episode 7 - Black holes, stealthy satellites and the distance to DF2
    2025/03/10

    In this episode of The Starxiv, Michelle and Payel discuss a revised distance for the controversial ultra-diffuse galaxy, DF2; a discovery of a supermassive black hole in an ultra compact dwarf; 2 galaxies hiding in plain sight; and how statistical mechanics may help with dark matter's cusp-core problem. Michelle and Payel also have to put up with slightly inferior audio quality as the undergraduates reclaimed their recording equipment!

    This episode's papers:

    A new way to measure the distance to NGC1052-DF2 – Michael Beasley et al.

    Revisiting the globular clusters of NGC1052-DF2 – Katja Fahrion et al.

    Chemical signature reveals co-spatial dwarf satellite of an edge-on disc galaxy with MUSE – Devang Somawanshi et al.

    When Is a Bulge Not a Bulge? Revealing the Satellite Nature of NGC 5474’s Bulge – Ray Garner III et al.

    A Supermassive Black Hole in a Diminutive Ultra-compact Dwarf Galaxy Discovered with JWST/NIRSpec+IFU – Matthew Taylor et al.

    Addressing the core-cusp and diversity problem of dwarf and disk galaxies using cold collisionless DARKexp theory – Liliya Williams et al.

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    31 分
  • Episode 6 - Einstein rings, black holes, and ringed galaxies
    2025/02/24

    In this episode, Payel and Michelle delve into the arXiv and discuss standard sirens, gravitational lenses, a very metal poor stellar stream and a cosmic bullseye!

    Candidate intermediate-mass black hole discovered in an extremely young low-metallicity cluster in the tadpole galaxy KUG 1138+327 – Wang & Ott

    Spinning spectral sirens: Robust cosmological measurement using mass-spin correlations in the binary black hole population – Hui et al

    Euclid: A complete Einstein ring in NGC 6505 – C. M. O’Riordan et al.

    The Pristine survey: XXVIII. The extremely metal-poor stream C-19 stretches over more than 100 degrees – Zhen Yuan et al

    Unveiling a 36 Billion Solar Mass Black Hole at the Centre of the Cosmic Horseshoe Gravitational Lens – Melo-Carneiro et al.

    The Bullseye: HST, Keck/KCWI, and Dragonfly Characterization of a Giant Nine-Ringed Galaxy – Imad Pasha et al.

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    33 分
  • Episode 5 - Galaxies, gas accretion, and aliens
    2025/02/10

    Arriving in your ears on February 10th, our latest installment includes transfer learning to detect low surface brightness galaxies, hot and cold gas accretion, an unusual finding in a filament, details of our proto-Galaxy, and the search for intelligent life!

    Papers discussed this month:

    DES to HSC: Detecting low surface brightness galaxies in the Abell 194 cluster using transfer learning – Thuruthipilly et al.

    Gas accretion at high redshift: cold flows all the way – Waterval et al.

    Pearls on a string: Dark and bright galaxies on a strikingly straight and narrow filament – Arabsalmani et al.

    Discovery of A Starburst in the Early Milky Way at [Fe/H] <−2 – Chen et al.

    The Local Galactic Transient Survey Applied to an Optical Search for Directed Intelligence – Thomas et al.

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    33 分
  • Episode 4 - January
    2025/01/28

    In this month’s edition, Michelle and Payel dive into the New Year with papers on machine learning, star formation in low mass galaxies and working out just how early in the Universe planets can form.

    Papers discussed this month:

    Habitable Worlds Formed at Cosmic Dawn Whalen et al.

    The puzzle of isolated and quenched dwarf galaxies in cosmic voids Bidaran et al.

    On the detection of stellar wakes in the Milky Way: a deep learning approach – Pöder et al

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    28 分