• Login
    View Item 
    •   Home
    • UA Faculty Research
    • UA Faculty Publications
    • View Item
    •   Home
    • UA Faculty Research
    • UA Faculty Publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of UA Campus RepositoryCommunitiesTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournalThis CollectionTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournal

    My Account

    LoginRegister

    About

    AboutUA Faculty PublicationsUA DissertationsUA Master's ThesesUA Honors ThesesUA PressUA YearbooksUA CatalogsUA Libraries

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    A Mildly Relativistic Outflow from the Energetic, Fast-rising Blue Optical Transient CSS161010 in a Dwarf Galaxy

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    Coppejans_2020_ApJL_895_L23.pdf
    Size:
    1.980Mb
    Format:
    PDF
    Description:
    Final Published Version
    Download
    Author
    Coppejans, D. L.
    Margutti, R. cc
    Terreran, G.
    Nayana, A. J.
    Coughlin, E. R.
    Laskar, T. cc
    Alexander, K. D.
    Bietenholz, M. cc
    Caprioli, D.
    Chandra, P.
    Drout, M. R.
    Frederiks, D.
    Frohmaier, C.
    Hurley, K. H
    Kochanek, C. S.
    MacLeod, M.
    Meisner, A.
    Nugent, P. E.
    Ridnaia, A.
    Sand, D. J.
    Svinkin, D.
    Ward, C.
    Yang, S.
    Baldeschi, A.
    Chilingarian, I. V.
    Dong, Y.
    Esquivia, C.
    Fong, W. cc
    Guidorzi, C.
    Lundqvist, P. cc
    Milisavljevic, D.
    Paterson, K.
    Reichart, D. E.
    Shappee, B.
    Stroh, M. C.
    Valenti, S. cc
    Zauderer, B. A. cc
    Zhang, B.
    Show allShow less
    Affiliation
    Univ Arizona, Steward Observ
    Issue Date
    2020-05-26
    Keywords
    Supernovae
    Accretion
    Black holes
    X-ray transient sources
    Radio transient sources
    
    Metadata
    Show full item record
    Publisher
    IOP PUBLISHING LTD
    Citation
    Coppejans, D. L., Margutti, R., Terreran, G., Nayana, A. J., Coughlin, E. R., Laskar, T., ... & Zhang, B. (2020). A mildly relativistic outflow from the energetic, fast-rising Blue Optical Transient CSS161010 in a dwarf galaxy. The Astrophysical Journal Letters, 895(1), L23.
    Journal
    ASTROPHYSICAL JOURNAL LETTERS
    Rights
    © 2020. The American Astronomical Society. All rights reserved.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    We present X-ray and radio observations of the Fast Blue Optical Transient CRTS-CSS161010 J045834-081803 (CSS161010 hereafter) at t = 69-531 days. CSS161010 shows luminous X-ray (L-x similar to 5 x 10(39) erg s(-1)) and radio (L-nu similar to 10(29) erg s(-1) Hz(-1)) emission. The radio emission peaked at similar to 100 days post-transient explosion and rapidly decayed. We interpret these observations in the context of synchrotron emission from an expanding blast wave. CSS161010 launched a mildly relativistic outflow with velocity Gamma beta c >= 0.55c at similar to 100 days. This is faster than the non-relativistic AT 2018cow (Gamma beta c similar to 0.1c) and closer to ZTF18abvkwla (Gamma beta c >= 0.3c at 63 days). The inferred initial kinetic energy of CSS161010 (E-k greater than or similar to 10(51) erg) is comparable to that of long gamma-ray bursts, but the ejecta mass that is coupled to the mildly relativistic outflow is significantly larger (similar to 0.01-.1 M-circle dot). This is consistent with the lack of observed gamma-rays. The luminous X-rays were produced by a different emission component to the synchrotron radio emission. CSS161010 is located at similar to 150 Mpc in a dwarf galaxy with stellar mass M-* similar to 10(7) M-circle dot and specific star formation rate sSFR similar to 0.3 Gyr(-1). This mass is among the lowest inferred for host galaxies of explosive transients from massive stars. Our observations of CSS161010 are consistent with an engine-driven aspherical explosion from a rare evolutionary path of a H-rich stellar progenitor, but we cannot rule out a stellar tidal disruption event on a centrally located intermediate-mass black hole. Regardless of the physical mechanism, CSS161010 establishes the existence of a new class of rare (rate < 0.4% of the local core-collapse supernova rate) H-rich transients that can launch mildly relativistic outflows.
    ISSN
    2041-8205
    EISSN
    2041-8213
    DOI
    10.3847/2041-8213/ab8cc7
    Version
    Final published version
    Sponsors
    National Aeronautics and Space Administration
    ae974a485f413a2113503eed53cd6c53
    10.3847/2041-8213/ab8cc7
    Scopus Count
    Collections
    UA Faculty Publications

    entitlement

     
    The University of Arizona Libraries | 1510 E. University Blvd. | Tucson, AZ 85721-0055
    Tel 520-621-6442 | repository@u.library.arizona.edu
    DSpace software copyright © 2002-2017  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.