Sjoert van Velzen
Assistant Professor
- Name
- Dr. S. van Velzen
- Telephone
- +31 71 527 2727
- sjoert@strw.leidenuniv.nl
- ORCID iD
- 0000-0002-3859-8074
Assistant Professor
- Science
- Sterrewacht
- Sterrewacht
- Veronesi N., Rossi E.M. & Velzen S. van (2023), The most luminous AGN do not produce the majority of the detected stellar-mass black hole binary mergers in the local universe, Monthly Notices of the Royal Astronomical Society 526(4): 6031-6040.
- Hammerstein E., Cenko S., Gezari S. & Velzen S. van (2023), Integral field spectroscopy of 13 Tidal Disruption Event host galaxies from the ZTF survey, American Astronomical Society meeting abstracts. American Astronomical Society Meeting #241 8 January 2023 - 12 January 2023. Bulletin of the American Astronomical Society no. 55. seattle: AAS publishing. 214.01.
- Hammerstein E., Velzen S. van, Gezari S., Cenko S.B., Yao Y., Ward C., Frederick S., Villanueva N., Somalwar J.J., Graham M.J., Kulkarni S.R., Stern D., Andreoni I., Bellm E.C., Dekany R., Dhawan S., Drake A.J., Fremling C., Gatkine P., Groom S.L., Ho A.Y.Q., Kasliwal M.M., Karambelkar V., Kool E.C., Masci F.J., Medford M.S., Perley D.A., Purdum J., Roestel J. van, Sharma Y., Sollerman J., Taggart K. & Yan L. (2023), The final season reimagined: 30 tidal disruption events from the ZTF-I survey, The Astrophysical Journal 942(1): 9.
- Goodwin A.J., Miller-Jones J.C.A., Velzen S. van, Bietenholz M., Greenland J., Cenko B., Gezari S., Horesh A., Sivakoff G.R., Yan L., Yu W. & Zhang X. (2023), Radio observations of the tidal disruption event AT2020opy: a luminous non-relativistic outflow encountering a dense circumnuclear medium, Monthly Notices of the Royal Astronomical Society 518(1): 847-854.
- Stein R., Reusch S., Franckowiak A., Kowalski M., Necker J., Weimann S., Kasliwal M.M., Sollerman J., Ahumada T., Amaro Seoane P., Anand S., Andreoni I., Bellm E.C., Bloom J.S., Coughlin M., De K., Fremling C., Gezari S., Graham M., Groom S.L., Helou G., Kaplan D.L., Karambelkar V., Kong A.K.H., Kool E.C., Lincetto M., Mahabal A.A., Masci F.J., Medford M.S., Morgan R., Nordin J., Rodriguez H., Sharma Y., Santen J. van, Velzen S. van & Yan L. (2023), Neutrino follow-up with the Zwicky transient facility: results from the first 24 campaigns, Monthly Notices of the Royal Astronomical Society 521(4): 5046-5063.
- Wen S., Jonker P.G., Stone N.C., Velzen S. van & Zabludoff A.I. (2023), Optical/UV emission in the Tidal Disruption Event ASASSN-14li: implications of disc modelling, Monthly Notices of the Royal Astronomical Society 522(1): 1155-1168.
- Goodwin A.J., Alexander K.D., Miller-Jones J.C.A., Bietenholz M.F., Velzen S. van, Anderson G.E., Berger E., Cendes Y., Chornock R., Coppejans D.L., Eftekhari T., Gezari S., Laskar T., Ramirez-Ruiz E. & Saxton R. (2023), A radio-emitting outflow produced by the tidal disruption event AT2020vwl, Monthly Notices of the Royal Astronomical Society 522(4): 5084-5097.
- Bučar Bricman K., Velzen S. van, Nicholl M. & Gomboc A. (2023), Rubin observatory's survey strategy performance for tidal disruption events, The Astrophysical Journal Supplement Series 268(1): 13.
- Hammerstein E., Cenko S.B., Gezari S., Veilleux S., O'Connor B., Velzen S. van, Ward C., Yao Y. & Graham M. (2023), Integral field spectroscopy of 13 Tidal Disruption Event hosts from the Zwicky Transient Facility survey, The Astrophysical Journal 957(2): 86.
- Pasham D.R., Lucchini M., Laskar T., Gompertz B.P., Srivastav S., Nicholl M., Smartt S.J., Miller-Jones J.C.A., Alexander K.D., Fender R., Smith G.P., Fulton M., Dewangan G., Gendreau K., Coughlin E.R., Rhodes L., Horesh A., Velzen S. van, Sfaradi I., Guolo M., Castro Segura N., Aamer A., Anderson J.P., Arcavi I., Brennan S.J., Chambers K., Charalampopoulos P., Chen T.-W., Clocchiatti A., Boer T. de, Dennefeld M., Ferrara E., Galbany L., Gao H., Gillanders J.H., Goodwin A., Gromadzki M., Huber M., Jonker P.G., Joshi M., Kara E., Killestein T.L., Kosec P., Kocevski D., Leloudas G., Lin C.-C., Margutti R., Mattila S., Moore T., Müller-Bravo T., Ngeow C.-C., Oates S., Onori F., Pan Y.-C., Perez-Torres M., Rani P., Remillard R., Ridley E.J., Schulze S., Sheng X., Shingles L., Smith K.W., Steiner J.F., Wainscoat R., Wevers T. & Yang S. (2023), The birth of a relativistic jet following the disruption of a star by a cosmological black hole, Nature Astronomy 7: 88-104.
- Hannah C., Seth A., Stone N. & Velzen S. van (2023), Black hole demographics in low-mass galaxies: improving tidal disruption event rate estimations, American Astronomical Society meeting abstracts. American Astronomical Society Meeting #241 8 January 2023 - 12 January 2023. Bulletin of the American Astronomical Society no. 55. Seattle: AAS publishing. 214.03.
- Gomez S., Villar V.A., Berger E., Gezari S., Velzen S. van, Nicholl M., Blanchard P.K. & Alexander K.D. (2023), Identifying tidal disruption events with an expansion of the FLEET machine-learning algorithm, The Astrophysical Journal 949(2): 113.
- Yao Y., Ravi V., Gezari S., Velzen S. van, Lu W., Schulze S., Somalwar J.J., Kulkarni S.R., Hammerstein E., Nicholl M., Graham M.J., Perley D.A., Cenko S.B., Stein R., Ricarte A., Chadayammuri U., Quataert E., Bellm E.C., Bloom J.S., Dekany R., Drake A.J., Groom S.L., Mahabal A.A., Prince T.A., Riddle R., Rusholme B., Sharma Y., Sollerman J. & Yan L. (2023), Tidal disruption event demographics with the Zwicky Transient Facility: volumetric rates, luminosity function, and implications for the local black hole mass function, Astrophysical Journal Letters 955(1): L6.
- Hambleton K.M., Bianco F.B., Street R., Bell K., Buckley D., Graham M., Hernitschek N., Lund M.B., Mason E., Pepper J., Prša A., Rabus M., Raiteri C.M., Szabó R., Szkody P., Andreoni I., Antoniucci S., Balmaverde B., Bellm E., Bonito R., Bono G., Botticella M.T., Brocato E., Bučar Bricman K., Cappellaro E., Carnerero M.I., Chornock R., Clarke R., Cowperthwaite P., Cucchiara A., D'Ammando F., Dage K.C., Dall'Ora M., Davenport J.R.A., Martino D. de, Somma de G., Di Criscienzo M., Di Stefano R., Drout M., Fabrizio M., Fiorentino G., Gandhi P., Garofalo A., Giannini T., Gomboc A., Greggio L., Hartigan P., Hundertmark M., Johnson E., Johnson M., Jurkic T., Khakpash S., Leccia S., Li X., Magurno D., Malanchev K., Marconi M., Margutti R., Marinoni S., Mauron N., Molinaro R., Möller A., Moniez M., Muraveva T., Musella I., Ngeow C.-C., Pastorello A., Petrecca V., Piranomonte S., Ragosta F., Reguitti A., Righi C., Ripepi V., Rivera Sandoval L., Stassun K.G., Stroh M., Terreran G., Trimble V., Tsapras Y., Velzen S. van, Venuti L. & Vink J.S. (2023), Rubin observatory LSST transients and variable stars roadmap, Publications of the ASP 135(1052): 105002.
- Reusch S., Stein R., Kowalski M., Velzen S. van, Franckowiak A., Lunardini C., Murase K., Winter W., Miller-Jones J.C.A., Kasliwal M.M., Gilfanov M., Garrappa S., Paliya V.S., Ahumada T., Anand S., Barbarino C., Bellm E.C., Brinnel V., Buson S., Cenko S.B., Coughlin M.W., De K., Dekany R., Frederick S., Gal-Yam A., Gezari S., Giroletti M., Graham M.J., Karambelkar V., Kimura S.S., Kong A.K.H., Kool E.C., Laher R.R., Medvedev P., Necker J., Nordin J., Perley D.A., Rigault M., Rusholme B., Schulze S., Schweyer T., Singer L.P., Sollerman J., Strotjohann N.L., Sunyaev R., van Santen J., Walters R., Zhang B.T. & Zimmerman E. (2022), Candidate tidal disruption event AT2019fdr coincident with a high-energy neutrino, Physical Review Letters 128(22): 221101.
- Yao Y., Lu W., Guolo M., Pasham D.R., Gezari S., Gilfanov M., Gendreau K.C., Harrison F., Cenko S.B., Kulkarni S.R., Miller J.M., Walton D.J., García J.A., Velzen S. van, Alexander K.D., Miller-Jones J.C.A., Nicholl M., Hammerstein E., Medvedev P., Stern D., Ravi V., Sunyaev R., Bloom J.S., Graham M.J., Kool E.C., Mahabal A.A., Masci F.J., Purdum J., Rusholme B., Sharma Y., Smith R. & Sollerman J. (2022), The tidal disruption event AT2021ehb: evidence of relativistic disk reflection, and rapid evolution of the disk-corona system, The Astrophysical Journal 937(1): 8.
- Cannizzaro G., Levan A.J., Velzen S. van & Brown G. (2022), The fall of CSS100217: a tidal disruption-induced low state in an apparently hostless active galactic nucleus, Monthly Notices of the Royal Astronomical Society 516(1): 529-539.
- Veronesi N., Rossi E.M., Velzen S. van & Buscicchio R. (2022), Detectability of a spatial correlation between stellar mass black hole mergers and active galactic nuclei in the local Universe, Monthly Notices of the Royal Astronomical Society 514(2): 2092-2097.
- Hammerstein E., Velzen S. van, Gezari S. & Cenko B. (2022), The final season reimagined: 30 tidal disruption events from the ZTF-I survey, American Astronomical Society meeting abstracts. American Astronomical Society Meeting #240 12 June 2022 - 16 June 2022 no. 54. Washington: AAS Publishing. 432.07.
- Goodwin A.J., Velzen S. van, Miller-Jones J.C.A., Mummery A., Bietenholz M.F., Wederfoort A., Hammerstein E., Bonnerot C., Hoffmann J. & Yan L. (2022), AT2019azh: an unusually long-lived, radio-bright thermal tidal disruption event, Monthly Notices of the Royal Astronomical Society 511(4): 5328-5345.
- Frederick S., Gezari S., Graham M.J., Sollerman J., Velzen S. van, Perley D.A., Stern D., Ward C., Hammerstein E., Hung T., Yan L., Andreoni I., Bellm E.C., Duev D.A., Kowalski M., Mahabal A.A., Masci F.J., Medford M., Rusholme B., Smith R. & Walters R. (2021), A family tree of optical transients from narrow-line Seyfert 1 galaxies, The Astrophysical Journal 920(1): 56.
- Malyali A., Rau A., Merloni A., Nandra K., Buchner J., Liu Z., Gezari S., Sollerman J., Shappee B., Trakhtenbrot B., Arcavi I., Ricci C., Velzen S. van, Goobar A., Frederick S., Kawka A., Tartaglia L., Burke J., Hiramatsu D., Schramm M., Boom D. van der, Anderson G., Miller-Jones J.C.A., Bellm E., Drake A., Duev D., Fremling C., Graham M., Masci F., Rusholme B., Soumagnac M. & Walters R. (2021), AT 2019avd: a novel addition to the diverse population of nuclear transients, Astronomy & Astrophysics 647: A9.
- Nyland K., Dong D.Z., Patil P., Lacy M., Velzen S. van, Kimball A.E., Sarbadhicary S.K., Hallinan G., Baldassare V., Clarke T.E., Goulding A.D., Greene J., Hughes A., Kassim N., Kunert-Bajraszewska M., Maccarone T.J., Mooley K., Mukherjee D., Peters W., Petrov L., Polisensky E., Rujopakarn W., Whittle M. & Vaccari M. (2021), Powerful quasars with young jets in multi-epoch radio surveys, Astronomical Notes = Astronomische Nachrichten 342(9-10): 1146-1150.
- Stein R., Velzen S. van, Kowalski M., Franckowiak A., Gezari S., Miller-Jones J.C.A., Frederick S., Sfaradi I., Bietenholz M.F., Horesh A., Fender R., Garrappa S., Ahumada T., Andreoni I., Belicki J., Bellm E.C., Böttcher M., Brinnel V., Burruss R., Cenko S.B., Coughlin M.W., Cunningham V., Drake A., Farrar G.R., Feeney M., Foley R.J., Gal-Yam A., Golkhou V.Z., Goobar A., Graham M.J., Hammerstein E., Helou G., Hung T., Kasliwal M.M., Kilpatrick C.D., Kong A.K.H., Kupfer T., Laher R.R., Mahabal A.A., Masci F.J., Necker J., Nordin J., Perley D.A., Rigault M., Reusch S., Rodriguez H., Rojas-Bravo C., Rusholme B., Shupe D.L., Singer L.P., Sollerman J., Soumagnac M.T., Stern D., Taggart K., Santen J. van, Ward C., Woudt P. & Yao Y. (2021), A tidal disruption event coincident with a high-energy neutrino, Nature Astronomy 5: 510-518.
- Hodgkin S.T., Harrison D.L., Breedt E., Wevers T., Rixon G., Delgado A., Yoldas A., Kostrzewa-Rutkowska Z., Wyrzykowski Ł., Leeuwen M. van, Blagorodnova N., Campbell H., Eappachen D., Fraser M., Ihanec N., Koposov S.E., Kruszyńska K., Marton G., Rybicki K.A., Brown A.G.A., Burgess P.W., Busso G., Cowell S., De Angeli F., Diener C., Evans D.W., Gilmore G., Holland G., Jonker P.G., Leeuwen F. van, Mignard F., Osborne P.J., Portell J., Prusti T., Richards P.J., Riello M., Seabroke G.M., Walton N.A., Ábrahám P., Altavilla G., Baker S.G., Bastian U., O'Brien P., Bruijne J. de, Butterley T., Carrasco J.M., Castañeda J., Clark J.S., Clementini G., Copperwheat C.M., Cropper M., Damljanovic G., Davidson M., Davis C.J., Dennefeld M., Dhillon V.S., Dolding C., Dominik M., Esquej P., Eyer L., Fabricius C., Fridman M., Froebrich D., Garralda N., Gomboc A., González-Vidal J.J., Guerra R., Hambly N.C., Hardy L.K., Holl B., Hourihane A., Japelj J., Kann D.A., Kiss C., Knigge C., Kolb U., Komossa S., Kóspál Á., Kovács G., Kun M., Leto G., Lewis F., Littlefair S.P., Mahabal A.A., Mundell C.G., Nagy Z., Padeletti D., Palaversa L., Pigulski A., Pretorius M.L., Reeven W. van, Ribeiro V.A.R.M., Roelens M., Rowell N., Schartel N., Scholz A., Schwope A., Sipőcz B.M., Smartt S.J., Smith M.D., Serraller I., Steeghs D., Sullivan M., Szabados L., Szegedi-Elek E., Tisserand P., Tomasella L., Velzen S. van, Whitelock P.A., Wilson R.W. & Young D.R. (2021), Gaia early data release 3: Gaia photometric science alerts, Astronomy & Astrophysics 652: A76.
- Jonker P.G., Arcavi I., Sterl Phinney E., Rossi E.M., Stone N.C. & Velzen S. van (2021), Editorial to the topical collection: the tidal disruption of stars by massive black holes, Space Science Reviews 217(5): 62.
- Roth N., Velzen S. van, Cenko S.B. & Mushotzky R.F. (2021), Forward modeling populations of flares from tidal disruptions of stars by supermassive black holes, The Astrophysical Journal 910(2): 93.
- Wevers T., Pasham D.R., Velzen S. van, Miller-Jones J.C.A., Uttley P., Gendreau K.C., Remillard R., Arzoumanian Z., Löwenstein M. & Chiti A. (2021), Rapid accretion state transitions following the tidal disruption event AT2018fyk, The Astrophysical Journal 912(2): 151.
- Velzen S. van, Pasham D.R., Komossa S., Yan L. & Kara E.A. (2021), Reverberation in tidal disruption events: dust echoes, coronal emission lines, multi-wavelength cross-correlations, and QPOs, Space Science Reviews 217(5): 63.
- Sazonov S., Gilfanov M., Medvedev P., Yao Y., Khorunzhev G., Semena A., Sunyaev R., Burenin R., Lyapin A., Meshcheryakov A., Uskov G., Zaznobin I., Postnov K.A., Dodin A.V., Belinski A.A., Cherepashchuk A.M., Eselevich M., Dodonov S.N., Grokhovskaya A.A., Kotov S.S., Bikmaev I.F., Zhuchkov R.Y., Gumerov R.I., Velzen S. van & Kulkarni S. (2021), First tidal disruption events discovered by SRG/eROSITA: X-ray/optical properties and X-ray luminosity function at z < 0.6, Monthly Notices of the Royal Astronomical Society 508(3): 3820-3847.