Difference between revisions of "Triggers"

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''' Please expand this section with your favourite types of possible alerts or contaminants. The most useful information would be the number statistics, amplitude and timescale, example light curve, spectrum and the reasoning for an rapid alert.'''
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''' Please expand this section with your favourite types of possible alerts. The most useful information would be the number statistics, amplitude and timescale, example light curve, spectrum and the reasoning for an rapid alert.'''
  
 
===Possible triggers for Science Alerts===
 
===Possible triggers for Science Alerts===
  
−
* [[Triggers:Supernovae | Supernovae]]
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* [[Triggers:Asteroids | Asteroids]]
 +
 
 +
* [[Triggers:Be | Be-type stars]]
 +
 
 +
* [[Triggers:CVs | Cataclysmic Variables (CVs)]]
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 +
* [[Triggers:CNe | Classical novae]]
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 +
* [[Triggers:DNe | Dwarf novae]]
 +
 
 +
* [[Triggers:GRBs | Gamma Ray Bursts Optical Counterparts]]
  
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* [[Triggers:DNe | Dwarf/classical novae]]
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* [[Triggers:LensedSNe | Gravitationally lensed supernovae]]
  
−
* [[Triggers:Microlensing | Microlensing events]]
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* [[Triggers:LBVs | Luminous Blue Variables]]
  
 
* [[Triggers:Flares | M-dwarf flares]]
 
* [[Triggers:Flares | M-dwarf flares]]
 +
 +
* [[Triggers:Microlensing | Microlensing events]]
  
 
* [[Triggers:RCrB | R Coronae Borealis type variables (dimming objects)]]
 
* [[Triggers:RCrB | R Coronae Borealis type variables (dimming objects)]]
 +
 +
* [[Triggers:Supernovae | Supernovae]]
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 +
* [[Triggers:TTau | T Tauri stars and other Young variables]]
 +
 +
** [[Triggers:FUOri | Eruptive young stellar objects]]
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** [[Triggers:YSOecl | Eclipsing young stellar objects]]
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* [[Triggers:XBs | X-ray binaries (XBs)]]
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 +
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* [[Triggers:Other | Other rare transients]]
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* [[Triggers:Theoretical | Exotic/theoretical events]]
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 +
== Table of transients ==
 +
This table is based on [http://arxiv.org/abs/0906.5355 Rau et al. 2009] on Palomar Transient Factory (PTF).
 +
MR is an absolute magnitude in R, tau is time of a decline by 2 mag.
 +
Note, these are not all the types of transites Gaia will detect.
 +
 +
{| border="1" cellspacing="0" cellpadding="5" align="center"
 +
! Class
 +
! MR
 +
! tau
 +
! Universal rate
 +
! Gaia rate
 +
|-
 +
| Dwarf Novae
 +
| 9..4
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| 3..20
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| <math>3\times10^{-5} \textrm{pc}^{-3} \textrm{yr}^{-1}</math>
 +
|
 +
|-
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|Classical Novae
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| -5..-10
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|2..100
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|<math>2\times10^{-10} \textrm{yr}^{-1}\textrm{L}_{\odot,K}^{-1}</math>
 +
|
 +
|-
 +
|Luminous Red Novae
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| -10..-14
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|20..60
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|<math>1.5\times10^{-13} \textrm{yr}^{-1}\textrm{L}_{\odot,K}^{-1}</math>
 +
|
 +
|-
 +
|Fallback SNe
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| -4..-21
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|0.5..2
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|<math>10^{-13} \textrm{yr}^{-1}\textrm{L}_{\odot,K}^{-1}</math>
 +
|
 +
|-
 +
|Macronovae
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| -13..-15
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|0.3..3
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|<math>10^{-4..-8} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
 +
|
 +
|-
 +
|SN .Ia
 +
| -15..-17
 +
|2..5
 +
|<math>(4..10)\times 10^{-6} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
 +
|
 +
|-
 +
|SNe Ia
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| -17..-19.5
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|30..70
 +
|<math>3\times 10^{-5} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
 +
|
 +
|-
 +
|Tidal disruption flares
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| -15..-19
 +
|30..350
 +
|<math>10^{-6} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
 +
|
 +
|-
 +
|Core-collapse SNe
 +
| -14..-21
 +
|20..300
 +
|<math>5\times 10^{-5} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
 +
|
 +
|-
 +
|Luminous SNe
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| -19..-23
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|50..400
 +
|<math>10^{-7} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
 +
|
 +
|-
 +
|Orphan afterglows (SGRB)
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| -14..-18
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|5..15
 +
|<math>3\times 10^{-7..-9} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
 +
|
 +
|-
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|Orphan afterglows (LGRB)
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| -22..-26
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|2..15
 +
|<math>3\times 10^{-7..-9} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
 +
|
 +
|-
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|On-axis LGRB afterglows
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| ..-37
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|1..15
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|<math>4\times 10^{-10} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
 +
|
 +
|-
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|}
 +
 +
----
 +
== CMD of selected variables and transients ==
 +
CMD paths of various types of variable stars, including Be stars, R CrB and V4334 Sgr. From [http://arxiv.org/abs/0907.4090 Spano et al. 2009]
 +
 +
[[File:VariablesPathsCMDLMC.png|650px]]
 +
 +
----
 +
== Time scales and amplitudes ==
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[[File:Kulkarni-absmag-timescale.png|400px|left|thumb|Absolute magnitude vs timescale of novae, supernovae and some of new transients. From Kulkarni (2009).]]
 +
 +
[[File:plot_transients_tau_ampl.png|400px]]
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[[File:plot_transients_trise_ampl.png|400px]]
 +
[[File:plot_transients_tdecline_ampl.png|400px]]
 +
[[File:plot_transients_trise_tdecline.png|400px]]

Latest revision as of 15:14, 26 July 2013

Please expand this section with your favourite types of possible alerts. The most useful information would be the number statistics, amplitude and timescale, example light curve, spectrum and the reasoning for an rapid alert.

Possible triggers for Science Alerts


Table of transients

This table is based on Rau et al. 2009 on Palomar Transient Factory (PTF). MR is an absolute magnitude in R, tau is time of a decline by 2 mag. Note, these are not all the types of transites Gaia will detect.

Class MR tau Universal rate Gaia rate
Dwarf Novae 9..4 3..20 <math>3\times10^{-5} \textrm{pc}^{-3} \textrm{yr}^{-1}</math>
Classical Novae -5..-10 2..100 <math>2\times10^{-10} \textrm{yr}^{-1}\textrm{L}_{\odot,K}^{-1}</math>
Luminous Red Novae -10..-14 20..60 <math>1.5\times10^{-13} \textrm{yr}^{-1}\textrm{L}_{\odot,K}^{-1}</math>
Fallback SNe -4..-21 0.5..2 <math>10^{-13} \textrm{yr}^{-1}\textrm{L}_{\odot,K}^{-1}</math>
Macronovae -13..-15 0.3..3 <math>10^{-4..-8} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
SN .Ia -15..-17 2..5 <math>(4..10)\times 10^{-6} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
SNe Ia -17..-19.5 30..70 <math>3\times 10^{-5} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
Tidal disruption flares -15..-19 30..350 <math>10^{-6} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
Core-collapse SNe -14..-21 20..300 <math>5\times 10^{-5} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
Luminous SNe -19..-23 50..400 <math>10^{-7} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
Orphan afterglows (SGRB) -14..-18 5..15 <math>3\times 10^{-7..-9} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
Orphan afterglows (LGRB) -22..-26 2..15 <math>3\times 10^{-7..-9} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>
On-axis LGRB afterglows ..-37 1..15 <math>4\times 10^{-10} \textrm{Mpc}^{-3} \textrm{yr}^{-1}</math>

CMD of selected variables and transients

CMD paths of various types of variable stars, including Be stars, R CrB and V4334 Sgr. From Spano et al. 2009

VariablesPathsCMDLMC.png

Time scales and amplitudes

Absolute magnitude vs timescale of novae, supernovae and some of new transients. From Kulkarni (2009).

Plot transients tau ampl.png Plot transients trise ampl.png Plot transients tdecline ampl.png Plot transients trise tdecline.png

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