X ray transient surveys
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X-ray Transient Surveys. Daryl Haggard Greg Sivakoff. Overview. X-ray photons assigned arrival time, energy, and sky position sensitive, energy-dependent light curves time-resolved spectroscopy Baselines span 10 orders of magnitude at spatial resolutions of arcseconds

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X-ray Transient Surveys

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X ray transient surveys

X-ray Transient Surveys

Daryl Haggard

Greg Sivakoff


Overview

Overview

  • X-ray photons assigned arrival time, energy, and sky position

    • sensitive, energy-dependent light curves

    • time-resolved spectroscopy

  • Baselines span

    • 10 orders of magnitude at spatial resolutions of arcseconds

    • 13 orders of magnitude at spatial resolutions of a degree

  • High energy time domain data indicate variability in

    • AGN

    • Galactic center sources

    • X-ray binaries

    • Supernovae

    • Classical novae, recurrent novae

    • Magnetars

    • GRBs

    • Stellar flares

    • As-yet unknown X-ray variables


X ray missions

X-ray Missions

Planned/Proposed

  • NuSTAR

  • AstroSAT

  • eROSITA

  • GEMS

  • ASTRO-H

  • Athena

  • LOFT

  • WFXT

  • JANUS

  • EXIST

Active (+Archival)

  • Chandra

  • XMM

  • Swift

  • INTEGRAL

  • MAXI

  • Suzaku

    Archival

  • RXTE

  • ROSAT


The case for x ray transients

The Case for X-ray Transients

  • What are the most compelling science cases for current and future X-ray transient studies?

  • What efforts does the X-ray transient community need to undertake to best lobby for the importance of X-ray transient studies (past and present) to the general astronomical community?


Resource utilization

Resource Utilization

  • How will new planned or soon to be launched instruments support X-ray transient surveys?

  • What inventive ways can we develop to utilize new instruments that may not be originally designed for X-ray transient studies?

  • What steps do we need to take to transition from the era of RXTE to the era without it?

  • What important lessons have we learned from RXTE?


Multiwavelength coordination

Multiwavelength Coordination

  • How do we best coordinate multi-wavelength observations, especially for X-ray transient surveys?

  • Do we need to develop an X-ray Transient Network or are existing infrastructures like The Gamma-ray Circular Network and the Astronomers Telegram sufficient?

  • What cadences are needed to achieve various science priorities at different wavelengths?

  • Are there opportunities for citizen science with X-ray transient surveys?


Workshop synopsis

Workshop Synopsis


Schematic of variables transients

Schematic of Variables/Transients

Variable Disks

Tidal Disruptions

Tidal Disruptions

Winds and Jets

Disks & Jets

Stellar Flares

SNe/GRB

Mergers/GRB

Mostly X-ray viewpoint

Eyer, et al. 2008

Mahabal, this meeting


X ray time domain desirati

X-ray Time Domain Desirati

Discovery & Monitoring

Rapid Response

High Time Resolution

  • All Sky Monitor

  • MAXI/AstroSAT, Lobster-eye technology, LOFT

  • Science drivers: GRBs, SNeshock breakout, accretion physics, tidal disruptions

  • ~Daily Cadence

  • Rapid slew (< hr)

  • Swift, AstroSAT, LOFT, a suite of Swifts!?

  • Science drivers: GRBs, stellar flares/space weather, transient response

  • High Availability

  • Sub-ms timing

  • AstroSAT, Athena,LOFT?

  • Science drivers: Strong gravity, neutron star physics, XRB physics, QPOs

  • High Sensitivity


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