Regular Report

FAN results after the
August workshop
Thomas Tam
Albert, Regina, Ray, Jason S.(NTHU), Lupin (Chinese Med.), David S.
(Chungnam), K.S., Jumpei, Eric, David J. (HKU)
2011年11月17日星期四
What is FAN?
2011年11月17日星期四
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a machine with blades that go round to create a
current of air (Oxford)
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Fermi-Asian-Network
2nd Fermi Asian Network (FAN) Workshop
International Conference Hall
National Tsing Hua University
Hsinchu, Taiwan
August 1-5, 2011
Invited Speakers:
Lucas Guillemot (MPIfR)
Jun Kataoka (Waseda)
Roger Romani (Stanford)
Bronek Rudak (Torun)
Organizing Committee:
Albert Kong (Chair, NTHU)
K.S. Cheng (HKU)
Regina Huang (NTHU)
C.Y. Hui (Chungnam)
S.-Y. Kao (NTHU)
Lupin Lin (NCU)
C.-Y. Ng (McGill)
H.-Y. Pu (NTHU)
Jumpei Takata (HKU)
Thomas Tam (NTHU)
%$&'(*),$$'+(%
&$%$!
!
2011年11月17日星期四
Fermi Discovery of Gamma-ray Emission from the Globular Cluster Terzan 5 (Kong et al. 2010)
Sponsors:
National Science Council, Republic of China
National Tsing Hua University
Poster designed by Ray Li (HKU)
FAN publications
@Aug 2011
2011年11月17日星期四
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Largest number of Fermi papers (8 ApJ + 3 ATels + 1
GCN in 2010/2011) outside the Fermi collaboration
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Globular clusters: Kong+ 2010; Cheng+ 2010; Hui+
2011; Tam+ 2011
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Gamma-ray pulsar: Lin+ 2010; Tam+ 2010; Tam+ 2011
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Unidentified object: Hui+ 2011
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GRB: Tam & Kong 2011
Since then..
2011年11月17日星期四
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Tam, Yu, E. Wu, & Kong (Atel 3554)
Fermi/LAT Observations of the Gamma-ray Transient AGL 2103+5650
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Tam, Yu, Kong, J. Wu (Atel 3629)
Follow-up observations of TXS 1530-131 (PMN J1532-1319) using
Fermi/LAT and Swift/XRT
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J. Wu+ (ApJL, 740, L12)
Discovery of Gamma-Ray Emission from the Supernova Remnant Kes 17
with Fermi Large Area Telescope
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Li, Kong, Tam, & J. Wu (Atel 3759)
Swift observations of the supersoft X-ray transient XRF 111111A / MAXI
J0158-744
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Kong+ submitted
Discovery of an Unidentified Fermi Object as a Black Widow Like
2011年11月17日星期四
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Tam, Yu, E. Wu, & Kong (Atel 3554)
Fermi/LAT Observations of the Gamma-ray Transient AGL 2103+5650
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Tam, Yu, Kong, J. Wu (Atel 3629)
Follow-up observations of TXS 1530-131 (PMN J1532-1319) using
Fermi/LAT and Swift/XRT
•
J. Wu+ (ApJL, 740, L12)
Discovery of Gamma-Ray Emission from the Supernova Remnant Kes 17
with Fermi Large Area Telescope
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Li, Kong, Tam, & J. Wu (Atel 3759)
Swift observations of the supersoft X-ray transient XRF 111111A / MAXI
J0158-744
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Kong+ submitted
Discovery of an Unidentified Fermi Object as a Black Widow Like
AGL 2103+5630?
2011年11月17日星期四
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AGILE team claimed to have detected intense gamma-ray emission
above 100 MeV from the position (R.A.,Dec.=315.8, 56.5 deg,
J2000) during August 8-10, 2011 (Atel 3544)
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significance level of 4.8 sigma and a flux of ~3x10E-6 ph/cm2/s (E
> 100 MeV).
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No prominent extra-Galactic or Galactic gamma-ray sources are
known within the AGL 2103+5630 error box.
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We did not see anything and placed an upper limit at ~10^-7 ph/
cm^2/s, lower than the flux reported by AGILE team (Atel 3554)
2011年11月17日星期四
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Tam, Yu, E. Wu, & Kong (Atel 3554)
Fermi/LAT Observations of the Gamma-ray Transient AGL 2103+5650
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Tam, Yu, Kong, J. Wu (Atel 3629)
Follow-up observations of TXS 1530-131 (PMN J1532-1319) using
Fermi/LAT and Swift/XRT
•
J. Wu+ (ApJL, 740, L12)
Discovery of Gamma-Ray Emission from the Supernova Remnant Kes 17
with Fermi Large Area Telescope
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Li, Kong, Tam, & J. Wu (Atel 3759)
Swift observations of the supersoft X-ray transient XRF 111111A / MAXI
J0158-744
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Kong+ submitted
Discovery of an Unidentified Fermi Object as a Black Widow Like
TXS 1530-131
2011年11月17日星期四
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also known as PMN J1532-1319, a flat-spectrum radio
source
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listed in SDSS as a g=22.66 galaxy-like object.
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Fermi detected the source in gamma-rays during May 23
to August 23, 2011 (Atel 3579)
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On August 22, gamma-ray flux increased to ~10E-6 ph/
cm2/s (E > 100 MeV).
Our follow-ups
2011年11月17日星期四
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We verified Fermi team’s detection
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Corrected their error circle (from 0.32 deg to 0.32’)
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The source is still flaring in gamma-rays during 2011
August 30 to September 4.
Swift ToO
2011年11月17日星期四
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2 ToO observations: Aug 31 & Sept 13 (~3ks each)
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found one X-ray source in the Fermi error circle,
consistent with the radio position (Healey+08)
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but no source was detected in the U-/B-bands by
UVOT in the 2 observations, rsp.
What’s Next?
2011年11月17日星期四
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The radio source, TXS 1530-131, now known to flare
in gamma-rays, is most likely a blazar (not detected
in all Fermi catalogs so far)
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We (PIs: Li & Yu) submitted a Gemini-S proposal,
aiming to measure the redshift of its host galaxy
during quiescent
2011年11月17日星期四
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Tam, Yu, E. Wu, & Kong (Atel 3554)
Fermi/LAT Observations of the Gamma-ray Transient AGL 2103+5650
•
Tam, Yu, Kong, J. Wu (Atel 3629)
Follow-up observations of TXS 1530-131 (PMN J1532-1319) using
Fermi/LAT and Swift/XRT
•
J. Wu+ (ApJL, 740, L12)
Discovery of Gamma-Ray Emission from the Supernova Remnant Kes 17
with Fermi Large Area Telescope
•
Li, Kong, Tam, & J. Wu (Atel 3759)
Swift observations of the supersoft X-ray transient XRF 111111A /
MAXI J0158-744
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Kong+ submitted
Discovery of an Unidentified Fermi Object as a Black Widow Like
On 2011/11/11..
2011年11月17日星期四
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MAXI/GSC triggered on a new X-ray transient source
at UT 2011-11-11T05:05:59 (XRF 111111A / MAXI
J0158-744; Atel 3756).
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The source is extremely soft and is located in the
outskirts of SMC, or (R.A., Dec) = (+29.5 deg, -74.4
deg) (J2000)
Swift follow-ups
2011年11月17日星期四
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Swift/XRT found an X-ray source positionally
consistent with MAXI J0158-744 (Kennea+ Atel
3758; Li+ Atel 3759). The X-ray flux had faded from
2.4 cts/s to < 0.2 cts/s in ~7 minutes.
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Swift/UVOT found a U=13 mag optical counterpart,
which had B=16 mag in the USNO catalog -> It
brightens!
Nature of MAXI J0158-744
2011年11月17日星期四
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MAXI J0158-744 is probably a new supersoft X-ray
source (SSS).
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Is MAXI J0158-744 the fifth SSS in SMC?
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Swift monitoring program ongoing; more results from
Ray..
Conclusion
2011年11月17日星期四
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FAN is running at an
accelerating speed (i.e. P_dot<0)
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especially during weekends...
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What’s the energy source?