Astronomy research2018-10-10T02:51:38+00:00

Astronomy research

Transient radio astronomy focuses on tracking down the strange signals that go bump in the night.  What strange bursts of radiation are out there?

PhD Research

Radio signals of astronomical objects

Supernovae (SNe) are among the most titanic explosions we know of in astronomy, and they play a key role infuture star formation in their surrounding environments. The first few years, when the supernova is brightest in optical and other wavelengths, is well studied, but intermediate aged supernovae ($\sim$10-100 years post explosion), are far less understood despite providing the transition to a supernova remnant (SnR). Luckily, radio wavelengths can fill this gap: as the shockwave expands into the surrounding circumstellar material (CSM) ejected by the star in the tens of thousands of years prior to the explosion, electrons spiraling in magnetic fields create synchrotron emission visible in radio. In fact, this emission can be brighter in radio wavelengths in the decades after the radio emission than it was during the supernova explosion, which can provide a trove of information on how the shockwave is interacting with its surroundings as it expands, and information about the progenitor star that ejected the CSM material.

My PhD has focused on studying these intermediate aged SNe as part of a broader interest in transient and variable radio sources. I have published on the most recent observations from Supernova 1987A (SN 1987A) using the Australia Telescope Compact Array (ATCA), which has shown the re-acceleration of the shockwave in that system after interacting with dense CSM. I have also led a study on nearby Type Ia SNe 1972E and 1895B going through three decades of archival VLA observations in order to rule out models of the progenitors of these objects. Finally, I have also investigated effects of short radio transients on a technical level, focusing on finding these signals and effects of Radio Frequency Interference (RFI).

Download my full CV here!

Refereed Publications

ADS Search

First Author:

  1. The Re-Acceleration of the Shockwave in the Radio Remnant of SN 1987A. 2018, Cendes et al. ApJ, in press. [arxiv: 1809.02364]
  2. RFI flagging implications for short-duration transients. Cendes, Y. et al. 2018, Astronomy and Computing, 23, p. 103-114. [arxiv: 1804:04708]
  3. Radio Constraints on the Progenitors and Evolution of Type Ia SN 1972E and SN 1895B. Cendes et al. 2018, in prep.

Coauthor:

  1. Identifying transient and variable sources in radio images. Rowlinson, A. & 18 others including Cendes. submitted to Astronomy and Computing. [1808.07781]
  2. New methods to constrain the radio transient rate: results from a survey of four fields with LOFAR.
    Carbone, D. & 25 authors including Cendes, Y. N. 2016, MNRAS, 459, Issue 3, p. 1361-3174 [arxiv: 1411:7928]
  3. Low-radio-frequency eclipses of the redback pulsar J2215+5135 observed in the image plane with LOFAR. Broderick, J. W. & 33 coauthors including Cendes, Y. 2016, MNRAS, 459, 3, p. 2681-2689 [arxiv: 1604:05722]
  4. LOFAR MSSS: Detection of a low-frequency radio transient in 400 hrs of monitoring of the North Celestial Pole.
    Stewart, A.J. & 102 coauthors including Cendes. 2016, MNRAS, 456, 3, p. 2321-2343 [arxiv: 1512:00014]
  5. The LOFAR Multifrequency Snapshot Sky Survey (MSSS) I. Survey description and first results.
    H. Heald & 140 authors including Y. Cendes. 2015, A&A, 582, id.A123. [arxiv: 1509.01257]
  6. The LOFAR Transients Pipeline.
    Swinbank, John D. & 27 authors including Cendes, Yvette. 2015, Astronomy and Computing, 11, p. 25-48 [arxiv: 1503.01526]

Other Publications

Proceedings:

  1. Astronomy on Reddit: Outreach Using the Front Page of the Internet. Cendes, Yvette N. 2018, IAU Communicating Astronomy with the Public Conference.

Telegrams:

  1. Supernova 2015Q in NGC 3888 = Psn J11473508+5558147, Central Bureau Electronic Telegrams, 4128, 1 (2015).
    Wiggins, P. & 49 authors including Cendes, Y.
  2. ASASSN-15lu is a Type Ia Supernova, The Astronomer’s Telegram, #7707 (2015)
    Leonard, D. C. &47 others including Cendes, Y.
  3. Optical Spectroscopy of PSN J15044078+1237436, The Astronomer’s Telegram, #7690 (2015)
    Leonard, D. C. &47 others including Cendes, Y.
  4. PSN J11473508+5558147 is a Type Ib Supernova Near Maximum Light, The Astronomer’s Telegram, #7680 (2015)
    Leonard, D. C. &47 others including Cendes, Y.
  • ASASSN-15lo is a Post-Maximum Normal Type Ia Supernova, The Astronomer’s Telegram, #7675
    Leonard, D. C. &47 others including Cendes, Y.

Writing about scienceYvette-Cendes-science-writing-articles-astronomy

Besides looking for radio signals, I also do some freelance science writing for several magazines and blogs.

> Check out all my scientific articles