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Optimizing Cadences...
Optimizing Cadences with Realistic Light-curve Filtering for Serendipitous Kilonova Discovery with Vera Rubin Observatory
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Andreoni, Igor (author)
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Coughlin, Michael W. (author)
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Almualla, Mouza (author)
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Bellm, Eric C. (author)
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Bianco, Federica B. (author)
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- Bulla, Mattia (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Cucchiara, Antonino (author)
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Dietrich, Tim (author)
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- Goobar, Ariel (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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- Kool, Erik C. (author)
- Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Li, Xiaolong (author)
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Ragosta, Fabio (author)
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- Sagués Carracedo, Ana (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
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Singer, Leo P. (author)
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(creator_code:org_t)
- 2021-12-22
- 2022
- English.
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In: Astrophysical Journal Supplement Series. - : American Astronomical Society. - 0067-0049 .- 1538-4365. ; 258:1
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https://doi.org/10.3...
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https://doi.org/10.3...
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Abstract
Subject headings
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- Current and future optical and near-infrared wide-field surveys have the potential to find kilonovae, the optical and infrared counterparts to neutron star mergers, independently of gravitational-wave or high-energy gamma-ray burst triggers. The ability to discover fast and faint transients such as kilonovae largely depends on the area observed, the depth of those observations, the number of revisits per field in a given time frame, and the filters adopted by the survey; it also depends on the ability to perform rapid follow-up observations to confirm the nature of the transients. In this work, we assess kilonova detectability in existing simulations of the Legacy Survey of Space and Time strategy for the Vera C. Rubin Wide Fast Deep survey, with focus on comparing rolling to baseline cadences. Although currently available cadences can enable the detection of >300 kilonovae out to ∼1400 Mpc over the 10 year survey, we can expect only 3–32 kilonovae similar to GW170817 to be recognizable as fast-evolving transients. We also explore the detectability of kilonovae over the plausible parameter space, focusing on viewing angle and ejecta masses. We find that observations in redder izy bands are crucial for identification of nearby (within 300 Mpc) kilonovae that could be spectroscopically classified more easily than more distant sources. Rubin's potential for serendipitous kilonova discovery could be increased by gain of efficiency with the employment of individual 30 s exposures (as opposed to 2 × 15 s snap pairs), with the addition of red-band observations coupled with same-night observations in g or r bands, and possibly with further development of a new rolling-cadence strategy.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Transient detection
- Transient sources
- Neutron stars
- Gravitational wave sources
- Surveys
- Optical astronomy
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Andreoni, Igor
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Coughlin, Michae ...
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Almualla, Mouza
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Bellm, Eric C.
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Bianco, Federica ...
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Bulla, Mattia
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show more...
-
Cucchiara, Anton ...
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Dietrich, Tim
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Goobar, Ariel
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Kool, Erik C.
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Li, Xiaolong
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Ragosta, Fabio
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Sagués Carracedo ...
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Singer, Leo P.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Astrophysical Jo ...
- By the university
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Stockholm University