Vid Irsic

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Vid Irsic

PhD, Senior Lecturer

 https://orcid.org/0000-0002-5445-461X
20112025

Research activity per year

Personal profile

Overview

Vid Irsic is an astrophysicist working in fields of cosmology, galaxy formation and astro-particle physics, with empahsis in large-scale structure evolution. As of February 2025 he is a Senior Lecturer based at the Center for Astrophysics Research at the University of Hertfordshire. Prior to this, he was IFPU Fellow at Scoula Internazionale Superiore di Studi Avanzati (SISSA) in Italy (2024-2025), Kavli Senior Fellow at Kavli Institute for Cosmology and Cavendish Laboratory at University of Cambridge (2019-2024), Research associate at Department of Astronomy at University of Washington in Seattle (2016-2019) and Postdoctoral researcher at International Centre for Theortical Physics (ICTP) in Italy (2013-2016). Irsic obtained his PhD (2010-2013) and undergraduate studies (2006-2010) from University of Ljubljana in Slovenia.

Research interests

Irsic leverges observational data and large computer simulations for cosmological parameter inference using Bayesian inference framework. Much of his work spans wide areas such as the nature of dark matter (e.g. warm-dark matter and ultra-light axions), inflationary physics (e.g. primoridal magnetic fields and isocurvatore fluctuations), black hole feedback process effects on cosmological observations (e.g. AGN feedback impact on weak lensing or Sunyaev-Zel'dovich effects), and precision cosmology with large survey data. Irsic is a long-time developer of  large numerical simulations (e.g. Sherwood-relics, xFABLE) with expertise in usage of HPC facilities. He is also a member of several international collaborations including DESI (Dark Energy Spectroscopic Instrument), WEAVE (Wide-field, multiplexed, spectroscopic facility) and WST (Wide-field Spectroscopic Telescope).

External positions

Kavli Medium-term visitor, Kavli Institute for Cosmology, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK

1 Sept 2024 → 31 Aug 2025

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Collaborations and top research areas from the last five years

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  • First Ly- α 1D bispectrum measurement in eBOSS

    de la Cruz, R., Niz, G., Iršič, V., Ravoux, C., Ramírez, C. & Herrera-Alcantar, H. K., 6 Jun 2025, In: Journal of Cosmology and Astroparticle Physics. 2025, 06, p. 1-42 42 p., 015.

    Research output: Contribution to journal › Article › peer-review

    Open Access
    File
    10 Downloads (Pure)

  • Stirring the cosmic pot: how black hole feedback shapes the matter power spectrum in the FABLE simulations

    Martin-Alvarez, S., Iršič, V., Koudmani, S., Bourne, M., Bigwood, L. & Sijacki, D., 1 May 2025, In: Monthly Notices of the Royal Astronomical Society (MNRAS). 539, 2, p. 1738–1755 18 p., staf470.

    Research output: Contribution to journal › Article › peer-review

    Open Access
    File
    8 Downloads (Pure)

  • The Early Data Release of the Dark Energy Spectroscopic Instrument

    Collaboration, D., Adame, A. G., Aguilar, J., Ahlen, S., Alam, S., Aldering, G., Alexander, D. M., Alfarsy, R., Allende Prieto, C., Alvarez, M., Alves, O., Anand, A., Andrade-Oliveira, F., Armengaud, E., Asorey, J., Avila, S., Aviles, A., Bailey, S., Balaguera-Antolínez, A. & Ballester, O. & 250 others, Baltay, C., Bault, A., Bautista, J., Behera, J., Beltran, S. F., BenZvi, S., Beraldo e Silva, L., Bermejo-Climent, J. R., Berti, A., Besuner, R., Beutler, F., Bianchi, D., Blake, C., Blum, R., Bolton, A. S., Brieden, S., Brodzeller, A., Brooks, D., Brown, Z., Buckley-Geer, E., Burtin, E., Cabayol-Garcia, L., Cai, Z., Canning, R., Cardiel-Sas, L., Carnero Rosell, A., Castander, F. J., Cervantes-Cota, J. L., Chabanier, S., Chaussidon, E., Chaves-Montero, J., Chen, S., Chen, X., Chuang, C., Claybaugh, T., Cole, S., Cooper, A. P., Cuceu, A., Davis, T. M., Dawson, K., de Belsunce, R., de la Cruz, R., de la Macorra, A., Della Costa, J., de Mattia, A., Demina, R., Demirbozan, U., DeRose, J., Dey, A., Dey, B., Dhungana, G., Ding, J., Ding, Z., Doel, P., Doshi, R., Douglass, K., Edge, A., Eftekharzadeh, S., Eisenstein, D. J., Elliott, A., Ereza, J., Escoffier, S., Fagrelius, P., Fan, X., Fanning, K., Fawcett, V. A., Ferraro, S., Flaugher, B., Font-Ribera, A., Forero-Romero, J. E., Forero-Sánchez, D., Frenk, C. S., Gänsicke, B. T., García, L. Á., García-Bellido, J., Garcia-Quintero, C., Garrison, L. H., Gil-Marín, H., Golden-Marx, J., Gontcho A Gontcho, S., Gonzalez-Morales, A. X., Gonzalez-Perez, V., Gordon, C., Graur, O., Green, D., Gruen, D., Guy, J., Hadzhiyska, B., Hahn, C., Han, J. J., Hanif, M. M. S., Herrera-Alcantar, H. K., Honscheid, K., Hou, J., Howlett, C., Huterer, D., Iršič, V., Ishak, M., Jacques, A., Jana, A., Jiang, L., Jimenez, J., Jing, Y. P., Joudaki, S., Joyce, R., Jullo, E., Juneau, S., Karaçaylı, N. G., Karim, T., Kehoe, R., Kent, S., Khederlarian, A., Kim, S., Kirkby, D., Kisner, T., Kitaura, F., Kizhuprakkat, N., Kneib, J., Koposov, S. E., Kovács, A., Kremin, A., Krolewski, A., L’Huillier, B., Lahav, O., Lambert, A., Lamman, C., Lan, T.-W., Landriau, M., Lang, D., Lange, J. U., Lasker, J., Leauthaud, A., Le Guillou, L., Levi, M. E., Li, T. S., Linder, E., Lyons, A., Magneville, C., Manera, M., Manser, C. J., Margala, D., Martini, P., McDonald, P., Medina, G. E., Medina-Varela, L., Meisner, A., Mena-Fernández, J., Meneses-Rizo, J., Mezcua, M., Miquel, R., Montero-Camacho, P., Moon, J., Moore, S., Moustakas, J., Mueller, E., Mundet, J., Muñoz-Gutiérrez, A., Myers, A. D., Nadathur, S., Napolitano, L., Neveux, R., Newman, J. A., Nie, J., Nikutta, R., Niz, G., Norberg, P., Noriega, H. E., Paillas, E., Palanque-Delabrouille, N., Palmese, A., Pan, Z., Parkinson, D., Penmetsa, S., Percival, W. J., Pérez-Fernández, A., Pérez-Ràfols, I., Pieri, M., Poppett, C., Porredon, A., Pothier, S., Prada, F., Pucha, R., Raichoor, A., Ramírez-Pérez, C., Ramirez-Solano, S., Rashkovetskyi, M., Ravoux, C., Rocher, A., Rockosi, C., Ross, A. J., Rossi, G., Ruggeri, R., Ruhlmann-Kleider, V., Sabiu, C. G., Said, K., Saintonge, A., Samushia, L., Sanchez, E., Saulder, C., Schaan, E., Schlafly, E. F., Schlegel, D., Scholte, D., Schubnell, M., Seo, H., Shafieloo, A., Sharples, R., Sheu, W., Silber, J., Sinigaglia, F., Siudek, M., Slepian, Z., Smith, A., Soumagnac, M. T., Sprayberry, D., Stephey, L., Suárez-Pérez, J., Sun, Z., Tan, T., Tarlé, G., Tojeiro, R., Ureña-López, L. A., Vaisakh, R., Valcin, D., Valdes, F., Valluri, M., Vargas-Magaña, M., Variu, A., Verde, L., Walther, M., Wang, B., Wang, M. S., Weaver, B. A., Weaverdyck, N., Wechsler, R. H., White, M., Xie, Y., Yang, J., Yèche, C., Yu, J., Yuan, S., Zhang, H., Zhang, Z., Zhao, C., Zheng, Z., Zhou, R., Zhou, Z., Zou, H., Zou, S. & Zu, Y., 1 Aug 2024, In: Astronomical Journal. 168, 2, p. 1-33 33 p., 58.

    Research output: Contribution to journal › Article › peer-review

    Open Access
    126 Citations (Scopus)

  • Particle initialization effects on Lyman- αforest statistics in cosmological SPH simulations

    Khan, N. K., Kulkarni, G., Bolton, J. S., Haehnelt, M. G., Iršič, V., Puchwein, E. & Asthana, S., 1 Jun 2024, In: Monthly Notices of the Royal Astronomical Society (MNRAS). 530, 4, p. 4920-4935 16 p.

    Research output: Contribution to journal › Article › peer-review

    Open Access
    3 Citations (Scopus)

  • The 3D Lyman-$α$ Forest Power Spectrum from eBOSS DR16

    de Belsunce, R., Philcox, O. H. E., Irsic, V., McDonald, P., Guy, J. & Palanque-Delabrouille, N., 30 Mar 2024, In: Monthly Notices of the Royal Astronomical Society (MNRAS). 533, 3, p. 3756-3770 15 p., stae2035.

    Research output: Contribution to journal › Article › peer-review

    Open Access
    8 Citations (Scopus)
    3 Downloads (Pure)
View all 48 research outputs